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06/05/2025 (9:30 AM - 12:00 PM) — Electrician

2025 · 175 questions · First 10 Solutions Free
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Q1 mcq
Simran rides a distance of 60 m in one minute and then returns along the same straight path. The average velocity of her ride is _____.
a.
0 m/s Correct Answer
b.
60 m/s
c.
1 m/s
d.
2 m/s

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Q2 mcq
Jaspreet deposited a sum of ₹12,800 at 5% rate of interest per annum, compounded annually. The total amount (in ₹) received by Jaspreet after 2 years will be:
a.
14,112 Correct Answer
b.
14,512
c.
13,997
d.
14,442

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Q3 mcq
Which of the following correctly describes the role of DNS (Domain Name System) in internet architecture?
a.
DNS translates IP addresses into domain names to make them easier to remember.
b.
DNS secures the data transmitted over the internet by encrypting it.
c.
DNS routes data packets to their destination across the internet.
d.
DNS translates domain names into IP addresses to allow browsers to locate web servers. Correct Answer

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Q4 mcq
Which key combination is commonly used for copying text in many text editing applications in Windows?
a.
Ctrl+S
b.
Ctrl+V
c.
Tab
d.
Ctrl+C Correct Answer

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Q5 mcq
In a certain code language, 'A × B' means ‘A is the son of B’, 'A − B' means ‘A is the brother of B’, 'A + B' means ‘A is the wife of B’ and 'A % B' means ‘A is the father of B’. How is M related to T if ‘M × N % P + S − T’?
a.
Brother's wife's brother Correct Answer
b.
Brother's wife's father's father
c.
Brother's wife's father
d.
Brother's wife's father's brother

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Q6 mcq
What is the immediate action to take when a fire breaks out in a workplace?
a.
Raise the alarm and evacuate the area Correct Answer
b.
Ignore the fire and continue working
c.
Gather near the fire to observe the situation
d.
Try to put it out using water without knowing the fire type

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Q7 mcq
Read the given statements and conclusions carefully. Assuming that the information given in the statements is true, even if it appears to be at variance with commonly known facts, decide which of the given conclusion(s) logically follow(s) from the statements. Statements: Some ships are boats. All boats are submarines. Some submarines are yachts Conclusions: (I) Some yachts are boats. (II) Some yachts are ships.
a.
Both conclusions (I) and (II) follow.
b.
Only conclusion (II) follows.
c.
Only conclusion (I) follows.
d.
Neither conclusion (I) nor (II) follows. Correct Answer

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Q8 mcq
In Engineering Drawing, which of the following is the correct definition of the term 'dimension'.
a.
A numerical value expressed in an appropriate unit of measurement Correct Answer
b.
A line that is drawn to make a section evident
c.
The thickness of the line of a letter
d.
A continuous thick or wide line along which the prints are trimmed

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Q9 mcq
Which of the following options is correct when two objects at the same temperature are kept in contact with each other?
a.
No heat is transferred. Correct Answer
b.
Heat is transferred from object 2 to object 1.
c.
Both objects transfer heat to each other.
d.
Heat is transferred from object 1 to object 2.

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Q10 mcq
Study the given pie chart and answer the question that follows. The given pie chart indicates the percentage-wise breakup of students in different subjects. The total number of students in the college is 5000. What is the ratio of the students studying Zoology to the students studying Botany?
a.
15 : 16
b.
14 : 15
c.
16 : 15 Correct Answer
d.
15 : 14

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Q11 mcq
What should come in place of the question mark (?) in the given series? 17 29 41 59 77 101 125 ?
a.
155
b.
161
c.
175
d.
149
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Q12 mcq
Which of the following groups represents conductors of heat?
a.
Paper, copper, plastic
b.
Aluminium, silver, copper
c.
Wood, paper, silver
d.
Aluminium, plastic, wood
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Q13 mcq
Refer to the following letter, number and symbol series and answer the question that follows. Counting to be done from left to right only. (Left) K A T & 4 @ Y # 6 K & 2 R % 7 D 3 5 E * S (Right) How many such symbols are there which are immediately preceded by a number and also immediately followed by a letter?
a.
Four
b.
Two
c.
One
d.
Three
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Q14 mcq
An object of mass m is made to fall freely from a height h. As the object continues to fall, what will happen to its energy?
a.
The potential energy would increase while the kinetic energy would decrease.
b.
The potential energy would decrease while the kinetic energy would increase.
c.
The kinetic energy and potential energy will not change.
d.
The potential energy and kinetic energy will both increase.
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Q15 mcq
Which of the following is an application of the 5S concept in a workshop?
a.
Keeping tools and materials organised for easy access
b.
Using extra tools without proper storage
c.
Removing safety protocols to improve efficiency
d.
Increasing the number of safety supervisors
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Q16 mcq
In a business, Tushar invests in ₹10,000 and Salil invests in ₹20,000. Tushar received 10% of the profit for managing the business and the rest of the profit is divided in the ratio of their capitals. Find Tushar's share of the profit (in ₹) in a profit of ₹14,400.
a.
5,760
b.
5,610
c.
5,910
d.
5,510
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Q17 mcq
Which of the following is an INCORRECT formula for power?
a.
I 2 R
b.
V 2 /R
c.
VI
d.
I 2 Rt
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Q18 mcq
Mangal starts from Point A and walks 14 m towards north. He takes a right turn, walks 9 m and then takes a right turn, walks 37 m, reaches Point B and stops. Jayanti starts from Point Z which is 15 m towards the east of Point B. She walks 11 m towards east, takes a left turn, walks 42 m, turns left and walks 63 m, turns left and walks 19 m and stops at Point Y. What is the shortest distance between Point A and Point Y? (All turns are 90 degree turns only.)
a.
31 m
b.
26 m
c.
28 m
d.
25 m
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Q19 mcq
Pihu starts her car at 9 a.m. to reach her office, which is 20 km away. She covers the first 10 km in 30 minutes and reaches her office at 10 a.m. Pihu’s motion is ________.
a.
non-uniform motion
b.
retarded motion
c.
accelerated motion
d.
uniform motion
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Q20 mcq
Which of the following is the temperature range in a clinical thermometer?
a.
31°C to 44°C
b.
30°C to 43°C
c.
10°C to 45°C
d.
35°C to 42°C
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Q21 mcq
The energy possessed by an object by virtue of its motion is known as ________.
a.
light energy
b.
potential energy
c.
kinetic energy
d.
heat energy
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Q22 mcq
The taxi charges in a city consist of a fixed charge together with the charge per kilometre for the distance covered. For a distance of 35 km, the charge paid is ₹375 and for a distance of 48 km, the charge paid is ₹427. Find the fixed charges and the charge per km (in ₹), respectively.
a.
235 and 4
b.
227 and 5
c.
220 and 6
d.
275 and 3
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Q23 mcq
The heat developed in a 5 ohm resistor in 2 minutes when a 2A current passes through it is ________.
a.
1000 J
b.
40 J
c.
2400 J
d.
500 J
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Q24 mcq
Select the pair that follows the same pattern as the one followed by the two sets of pairs given below. Both pairs follow the same pattern. BSR : GQW LOB : QMG
a.
QGT : TDW
b.
KRW : NPZ
c.
HVD : LTH
d.
RWH : WUM
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Q25 mcq
What is the main advantage of using solar energy over fossil fuels?
a.
Greenhouse gas emission is higher when solar energy is used.
b.
Solar energy extraction requires high operational cost when compared to fossil fuels.
c.
Solar energy is abundantly available and renewable in nature.
d.
Solar energy requires mining and extraction, whereas fossil fuels are free of cost.
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Q26 mcq
Match the following. (A) Continuous thick lines (P) Projection lines (B) Hidden lines (Q) Principal lines (C) Outlines (R) Dotted lines (D) Extension lines (S) Object lines
a.
A-S, B-R, C-P, D-Q
b.
A-S, B-R, C-Q, D-P
c.
A-R, B-S, C-Q, D-P
d.
A-P, B-R, C-Q, D-S
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Q27 mcq
What should come in place of the question mark (?) in the given series? 87 118 149 ? 211 242
a.
199
b.
188
c.
171
d.
180
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Q28 mcq
The HCF of two numbers is 62, and the other two factors of the LCM of these factors are 7 and 9. Which of the options given below can be a possible value of the smaller of the two numbers?
a.
434
b.
431
c.
432
d.
433
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Q29 mcq
How fast should a cat of mass 15 kg run in order to have a kinetic energy of 120 J?
a.
40 m/s
b.
16 m/s
c.
0.16 m/s
d.
4 m/s
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Q30 mcq
Which of the following features allows the user to quickly find emails received from a specific sender?
a.
Filter
b.
Sort
c.
Archive
d.
Draft
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Q31 mcq
The floor of a rectangular hall has a perimeter of 220 m. If the cost of painting the four walls at the rate of ₹10 per m 2 is ₹11,000, then find the volume of the hall.
a.
19,250 m 3
b.
19,520 m 3
c.
18,250 m 3
d.
19,200 m 3
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Q32 mcq
Find the value of 96.86572 × 10 7 .
a.
9,68,65,720
b.
0.9686572
c.
96,86,57,200
d.
96,86,572
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Q33 mcq
A boy goes to school at a speed of 5 km/hr. He returns at a speed of 14 km/hr. He takes a total of 8 hours for both going to school and returning. The distance (in km) between his home and school is:
a.
31
b.
29.5
c.
28.6
d.
27
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Q34 mcq
If 11.6 : x :: x : 2.9, and x > 0, then find the value of x.
a.
10.9
b.
3.1
c.
5.8
d.
7.7
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Q35 mcq
Based on the English alphabetical order, three of the following four letter-cluster pairs are alike in a certain way and thus form a group. Which letter-cluster pair DOES NOT belong to that group?? (Note: The odd one out is not based on the number of consonants/vowels or their position in the letter-cluster pair)
a.
MF – HJ
b.
DW – YA
c.
SL – NP
d.
WP – RS
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Q36 mcq
How do we find absolute error?
a.
Absolute error = Actual value + observed value
b.
Absolute error = Actual value × observed value
c.
Absolute error = Actual value/observed value
d.
Absolute error = Actual value − observed value
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Q37 mcq
In a certain code language, ‘LOVE’ is coded as ‘8364’ and ‘EARS’ is coded as ‘3517’. What is the code for ‘E’ in the given code language?
a.
3
b.
5
c.
7
d.
4
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Q38 mcq
The areas of three adjacent faces of a solid cuboid are 162 cm 2 , 144 cm 2 and 50 cm 2 . What is the volume (in cm 3 ) of the cuboid?
a.
805
b.
1365
c.
1080
d.
833
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Q39 mcq
How does turning off unused electrical devices contribute to energy conservation?
a.
By degrading electrical devices
b.
By increasing energy use
c.
By enhancing device performance
d.
By lowering utility bills
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Q40 mcq
Which of the following is a poor conductor of heat?
a.
Aluminium rod
b.
Steel spoon
c.
Copper
d.
Wool
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Q41 mcq
Select the triad that follows the same pattern as that followed by the two triads given below. Both triads follow the same pattern. JK - LM - NO TU - VW - XY
a.
DE - FB - DF
b.
DE - FG - HI
c.
WE - DF - HI
d.
DE - FG - KL
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Q42 mcq
A is thrice as good a workman as B and together they can finish a piece of work in 12 days. In how many days can A alone finish the work?
a.
14 days
b.
16 days
c.
12 days
d.
18 days
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Q43 mcq
A line in an engineering drawing is the ____________.
a.
one-dimensional figure, which has length but no width
b.
closed curve where all points are the same distance from a fixed centre point
c.
three-dimensional object with length, breadth, and height
d.
dimensionless location in space or on a drawing sheet that has no width, height, or depth
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Q44 mcq
Based on the English alphabetical order, three of the following four letter-cluster pairs are alike in a certain way and thus form a group. Which letter-cluster pair DOES NOT belong to that group? (Note: The odd one out is not based on the number of consonants/vowels or their position in the letter-cluster pair.)
a.
WE – AU
b.
MU – QL
c.
DL – HB
d.
SA – WQ
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Q45 mcq
What should come in place of the question mark (?) in the given series? UT27, RQ25, NM23, ?
a.
IH29
b.
IG21
c.
JH19
d.
IH21
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Q46 mcq
Which of the following correctly describes the direction of electric current?
a.
Opposite to the direction of positive charge flow
b.
Opposite to the direction of electron flow
c.
From low potential to high potential
d.
Same as the direction of electron flow
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Q47 mcq
In Engineering Drawing, principal lines are drawn to represent __________.
a.
visible edges and surface boundaries of objects
b.
interior or hidden edges
c.
axes of cylindrical, conical or spherical objects
d.
wide lines along which the prints are trimmed
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Q48 mcq
What is the main function of the Transport Layer in the internet architecture?
a.
Data encapsulation
b.
Routing of packets
c.
IP addressing
d.
Reliable data transfer and error correction
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Q49 mcq
If an electric heater draws a current of 5 A when the potential difference across its terminals is 75 V, what current will it draw when the potential difference is increased to 150 V?
a.
10 A
b.
20 A
c.
30 A
d.
15 A
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Q50 mcq
A fruit seller had some apples. He sells 40% of the apples and now has 900 apples. How many apples did he originally have?
a.
2250
b.
1800
c.
1500
d.
1350
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Q51 mcq
Which of the following benefits can be obtained by conducting an energy audit in a commercial building?
a.
Increasing the cost of energy bills
b.
Reduced market value of building
c.
Reduction in price of energy per its unit usage
d.
Identification of opportunities for energy savings
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Q52 mcq
Akshay gets 2% increase in his sale amount in the first year and 25% in the second year. With that his present sale is ₹1,42,800. What was his sale (in ₹) two years ago?
a.
1,12,000
b.
1,14,240
c.
1,40,000
d.
92,000
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Q53 mcq
If ‘A’ stands for ‘÷’, ‘B’ stands for ‘×’, ‘C’ stands for ‘+’ and ‘D’ stands for ‘−’, then what will come in place of the question mark (?) in the following equation? 35 A 7 C 9 B 3 D 16 = ?
a.
16
b.
10
c.
18
d.
21
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Q54 mcq
Which of the following is an effective way to prevent electrical accidents in the workplace?
a.
Working on live wires with bare hands
b.
Using water to cool overheated electrical equipment
c.
Ignoring minor electrical faults
d.
Using insulated tools and wearing rubber gloves
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Q55 mcq
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Q56 mcq
Two containers, one painted black and the other painted white, have been kept in sunlight for one hour in the afternoon. Choose the correct observation.
a.
The black container becomes hotter than the white container.
b.
There is no effect on either container .
c.
Both containers become equally hot.
d.
The white container becomes hotter than the black container.
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Q57 mcq
Which technology operates through an electrochemical process that transforms the energy stored in hydrogen gas (H 2 ) and oxygen into electrical power without combustion?
a.
Hydroelectric power
b.
Wind power
c.
Solar thermal power
d.
Hydrogen fuel cells
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Q58 mcq
In a certain code language, ‘WILD’ is coded as ‘8164’ and ‘DOGS’ is coded as ‘3517’. What is the code for ‘D’ in the given code language?
a.
4
b.
3
c.
1
d.
5
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Q59 mcq
In a clearance sale of electronic items, an item whose marked price was ₹12,225 is now sold for ₹10,758, d% is the discount percentage on the item. The value of d is:
a.
11%
b.
12%
c.
14%
d.
13%
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Q60 mcq
Which of the following steps is essential when configuring a web browser to enhance both security and privacy for a user?
a.
Setting the homepage to a frequently visited website for quick access
b.
Enabling pop-ups for all websites to improve user experience
c.
Configuring the browser to block third-party cookies and enabling HTTPS-only mode
d.
Disabling the browser's cache to improve website loading times
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Q61 mcq
Find the value of x 2 + y 2 , given that, x = 7 + √1, y = 7 − √​1​.
a.
100
b.
56
c.
69
d.
98
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Q62 mcq
The median of the data 2, 6, 4, 8, 1, 2, 5, 8, 9, 10, 12, 9, 7, 8, 3, 1, 0, 9, 2, 5 is ______.
a.
6.5
b.
5.5
c.
6
d.
5
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Q63 mcq
A can complete a piece of work in 18 days. B can complete it in 14 days. With the assistance of C, they completed the work in 7 days. C alone can complete it in ______________ days.
a.
36
b.
42
c.
63
d.
64
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Q64 mcq
Match the following, according to lettering and numbering (uppercase lettering) as per BIS SP: 46-2003. Width (W) Capital letters (A) 5 (I) W (B) 6 (II) A, M, Q, V, X, Y (C) 7 (III) B, D, G, H, K, N, O, P, R, S, T, U and Z (D) 9 (IV) C, E, F, L
a.
A-(I), B-(III), C-(II), D-(IV)
b.
A-(IV), B-(III), C-(II), D-(I)
c.
A-(IV), B-(III), C-(I), D-(II)
d.
A-(IV), B-(II), C-(III), D-(I)
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Q65 mcq
Two sets of numbers are given below. In each set of numbers, certain mathematical operation(s) on the first number results in the second number. Similarly, certain mathematical operation(s) on the second number results in the third number and so on. Which of the given options follows the same set of operations as in the given sets? (NOTE: Operations should be performed on the whole numbers, without breaking down the numbers into their constituent digits. E.g. 13 – Operations on 13 such as adding/subtracting/multiplying to 13 can be performed. Breaking down 13 into 1 and 3 and then performing mathematical operations on 1 and 3 is not allowed.) 24 – 48 – 108 – 36; 18 – 36 – 96 – 32
a.
82 – 139 – 234 – 78
b.
53 – 106 – 166 – 55
c.
48 – 96 – 156 – 52
d.
132 – 264 – 444 – 138
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Q66 mcq
Which term describes the maximum amount of solar energy that a photovoltaic (PV) system can convert into electricity under standard test conditions?
a.
Effective capacity
b.
Rated capacity
c.
Peak load
d.
Nameplate capacity
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Q67 mcq
Calculate the energy possessed by an object of mass 10 kg when it is raised to a height of 5 m from the ground. Given: g = 9.8 m s -2 .
a.
500 J
b.
400 J
c.
450 J
d.
490 J
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Q68 mcq
What should come in place of the question mark (?) in the given alpha-numeric series? 2M, 5O, 10R, 13T, 18W, 21Y, ?
a.
24B
b.
26A
c.
26C
d.
26B
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Q69 mcq
What is the amount of work done in moving a charge of 6 C from a point with a potential of 120 V to a point with a potential of 140 V?
a.
3.33 J
b.
120 J
c.
840 J
d.
720 J
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Q70 mcq
In a certain code language, ‘BORE’ is coded as ‘8624’ and ‘TABS’ is coded as ‘3217’. What is the code for ‘B’ in the given code language?
a.
8
b.
7
c.
1
d.
2
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Q71 mcq
Alloys are preferred over pure metals in electrical heating devices:
a.
because the elasticity of an alloy is higher than that of its constituent metals.
b.
because alloys oxidise (burn) readily at high temperatures.
c.
because the resistivity of an alloy is generally higher than its constituent metals.
d.
because the resistivity of an alloy is lower than that of its constituent metals.
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Q72 mcq
Each of I, J, K, L, U, V and W has an exam on a different day of a week starting from Monday and ending on Sunday of the same week.J has the exam on Friday. Only two people have the exam between V and J. Only four people have the exam between L and V. U has the exam immediately after W. K does not have the exam on Monday.How many people have the exam before K and after I?
a.
Three
b.
One
c.
Two
d.
Four
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Q73 mcq
Seema is twice as old as Alka. If nine years is subtracted from Alka’s age and six years is added to Seema’s age, then Seema will be four times Alka’s age. How old was Alka three years ago?
a.
18 years
b.
16 years
c.
20 years
d.
21 years
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Q74 mcq
Two trains of lengths 155 m and 160 m are running at speeds of 74 km/hr and 52 km/hr, respectively, on parallel tracks in opposite directions. In how many seconds will they pass each other?
a.
18 seconds
b.
7 seconds
c.
9 seconds
d.
14 seconds
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Q75 mcq
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Q76 mcq
In this question, a statement is given followed by two courses of action, numbered I and II. You must assume everything in the statement to be true, and on the basis of the information given in the statement, decide which of the given courses of action logically follow(s) for pursuing. Statement: A major fire broke out this afternoon in a mall in Jaipur, causing several casualties amongst the people present inside. Courses of Action: The police must check to see if the fire safety regulations were followed by the mall. Traffic police must divert traffic away from the fire site, to enable evacuation of people.
a.
Only II follows.
b.
Neither I nor II follows.
c.
Only I follows.
d.
Both I and II follow.
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Q77 mcq
Rakesh starts a business with a capital of ₹2,50,000. He incurs a loss of 5% during the first year. However, he makes a profit of 4% on his remaining investment during the second year. Finally, he makes a profit of 20% on his new capital during the third year. Find his total profit at the end of three years.
a.
₹46,600
b.
₹46,700
c.
₹46,500
d.
₹46,400
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Q78 mcq
The resistances of 30 ohm, 20 ohm and 60 ohm are connected in parallel. The equivalent resistance of the combination is ________.
a.
12 ohm
b.
0.1 ohm
c.
110 ohm
d.
10 ohm
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Q79 mcq
What is the scientific notation for 55,60,000 km?
a.
5.56 × 10 4 km
b.
5.56 × 10 6 km
c.
55.6 × 10 4 km
d.
556 × 10 6 km
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Q80 mcq
Which of the following is NOT a fundamental quantity in the SI system?
a.
Amount of substance
b.
Force
c.
Time
d.
Luminous intensity
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Q81 mcq
What will come in place of the question mark (?) in the following equation, if ‘+’ and ‘−’ are interchanged and ‘×’ and ‘÷’ are interchanged? 32 + 28 ÷ 3 × 4 − 15 = ?
a.
32
b.
26
c.
20
d.
29
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Q82 mcq
Which of the following is an example of uniform motion?
a.
A ball rolling down a slope
b.
A train moving at a constant speed on a straight track
c.
A sprinter running a 100-metre race with varying speed
d.
A vehicle moving through a crowded area
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Q83 mcq
If the sum of lengths of two adjacent sides of a parallelogram is 12 cm, then the perimeter of the parallelogram is:
a.
36 cm
b.
34 cm
c.
20 cm
d.
24 cm
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Q84 mcq
Two sets of numbers are given below. In each set of numbers, certain mathematical operation(s) on the first number results in the second number. Similarly, certain mathematical operation(s) on the second number results in the third number and so on. Which of the given options follows the same set of operations as in the given sets? (NOTE: Operations should be performed on the whole numbers, without breaking down the numbers into their constituent digits. E.g. 13 – Operations on 13 such as adding/subtracting/multiplying to 13 can be performed. Breaking down 13 into 1 and 3 and then performing mathematical operations on 1 and 3 is not allowed.) 11 – 121 – 221 – 171; 27 – 729 – 829 – 779
a.
23 – 529 – 629 – 589
b.
13 – 169 – 244 – 188
c.
25 – 625 – 725 – 675
d.
16 – 196 – 296 – 246
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Q85 mcq
Ampere is the SI unit of ________.
a.
mass
b.
electric power
c.
electric charge
d.
electric current
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Q86 mcq
Which of the following represents an item with kinetic energy?
a.
A compressed spring
b.
A book resting on a table
c.
An extended rubber band
d.
A stone in motion
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Q87 mcq
A person saves 50% of his income. If his expenditure is ₹640, then his income (in ₹) is:
a.
560
b.
600
c.
1,320
d.
1,280
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Q88 mcq
Which of the following is NOT one of the 5S principles?
a.
Standardise
b.
Sort
c.
Supervise
d.
Sustain
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Q89 mcq
How many base units are given in the SI system?
a.
7
b.
3
c.
11
d.
9
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Q90 mcq
In winters, people wear jacket because _____.
a.
jacket allows the heat to flow from our body to surroundings
b.
it looks good
c.
fabric of jacket is an insulator of heat so it traps body heat
d.
fabric of jacket is a conductor of heat so it traps body heat
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Q91 mcq
The list price of an article is ₹5,000 and a discount of 70% is offered on the list price. What additional discount per cent on the already discounted price must be offered to a customer to bring the net selling price to ₹1,275?
a.
16%
b.
10%
c.
18%
d.
15%
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Q92 mcq
How many significant figures are there in 4.700 m?
a.
3
b.
4
c.
2
d.
1
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Q93 mcq
Eight people are sitting in two parallel rows containing 4 people each in such a way that there is equal distance between adjacent persons. In row 1 – A, B, C and D are seated and all of them are facing south. In row 2 – P, Q, R and S are seated and all of them are facing north. Thus each person faces another person from the other row. Only three people sit to the right of R. D faces the person who is the immediate neighbour of S and P. C faces the person who sits second to the left of S. R does not face A. Who amongst the following faces B?
a.
P
b.
Q
c.
R
d.
S
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Q94 mcq
Aditya is using two thin blankets instead of one thick blanket in winter to keep himself warm because ________.
a.
the friction between the two blankets produces heat
b.
the blankets are at a higher temperature than the surroundings
c.
two blankets are cheaper than one thick blanket
d.
the air trapped between the blankets is a poor conductor of heat
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Q95 mcq
E, F, G, H, P, Q, and R, are sitting around a circular table facing the centre. F sits fourth to the right of E. Only R sits between F and H. H is NOT an immediate neighbour of E. Only P sits between E and G. How many people sit between G and Q when counted from the right of G?
a.
Three
b.
Four
c.
Two
d.
One
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Q96 mcq
The resistance of a metallic wire is R. If the radius of the metallic wire is reduced to half of its initial value while keeping all other parameters the same, the new resistance becomes ______.
a.
2R
b.
4R
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Q97 mcq
The mode of 4, 6, 4, 6, 5, 7, 5, 7, 4, 6, 7, 6 is:
a.
7
b.
4
c.
6
d.
5
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Q98 mcq
Two sets of numbers are given below. In each set of numbers, certain mathematical operation(s) on the first number results in the second number. Similarly, certain mathematical operation(s) on the second number results in the third number and so on. Which of the given options follows the same set of operations as in the given sets? (NOTE: Operations should be performed on the whole numbers, without breaking down the numbers into their constituent digits. E.g. 13 – Operations on 13 such as adding/subtracting/multiplying to 13 can be performed. Breaking down 13 into 1 and 3 and then performing mathematical operations on 1 and 3 is not allowed.) 4 – 8 – 18 – 9 6 – 12 – 22 – 11
a.
8 – 16 – 26 – 13
b.
9 – 18 – 28 – 20
c.
3 – 15 – 12 – 20
d.
11 – 13 – 22 – 63
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Q99 mcq
What is the first step when encountering a system failure in a workplace?
a.
Immediately restart all systems without inspection
b.
Disconnect all power sources permanently
c.
Ignore the failure and continue working
d.
Report the issue and follow the emergency protocol
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Q100 mcq
An electric lamp with a resistance of 35 ohms and a conductor with a resistance of 5 ohms are connected to an 8 V battery in series. Calculate the current flowing through the circuit.
a.
1.82 A
b.
2 A
c.
40 A
d.
0.2 A
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Q101 mcq
Which of the following is true when there is an unbalanced star connected load in a three-phase system?
a.
The magnitude of current in each phase of the load is equal.
b.
The power factor in each phase of the load is equal.
c.
Imbalance in phase voltages.
d.
The current in the neutral terminal is zero.
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Q102 mcq
A statement and conclusion for pictorial drawing are given below. Determine the logical relationship between them. Statement: Pictorial drawings are three-dimensional and provide a visual representation of an object. Conclusion: Therefore, pictorial drawings are useful for describing the shape of a piece part or component.
a.
The conclusion is partially supported by the statement.
b.
The conclusion logically follows from the statement.
c.
The conclusion does not logically follow from the statement.
d.
The conclusion is unrelated to the statement.
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Q103 mcq
Which of the following screwdrivers has cross-shaped tips that are unlikely to slip from the cruciform slots in Philips recessed head screws?
a.
Cross-recess screwdriver
b.
Offset screwdriver
c.
Ratchet screwdriver
d.
Stumpy screwdriver
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Q104 mcq
In the context of earthing system measurement, what does 'Earth resistance' refer to?
a.
The resistance between any two points of the ground with a distance of 1 metre
b.
The resistance between the live wire and the earth
c.
The ability of the ground to resist current flow
d.
The voltage required to activate the earthing system
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Q105 mcq
In a logic circuit, three SPST (Single Pole Single Throw) switches are used to implement a logic gate. The switches are connected in series. What is the output of the circuit if all switches are closed?
a.
Undefined
b.
The output will depend on the type of gate used
c.
1
d.
0
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Q106 mcq
Connection of voltage transformer and current transformer across line are _______, respectively.
a.
series and series
b.
parallel and parallel
c.
parallel and series
d.
series and parallel
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Q107 mcq
Which of the following actions is a part of the emergency response team's responsibilities during an active emergency?
a.
Conducting routine safety checks
b.
Preparing reports on emergency incidents
c.
Rescuing persons in immediate danger
d.
Scheduling regular evacuation drills
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Q108 mcq
The RMS value of emf per phase of alternator is given by _______. (Given: Φ = flux per pole, f = frequency of induced emf, T is the number of coils or turns per phase and Z is the number of conductors or coil sides in series/phase in an alternator)
a.
4.44 ΦZ
b.
4.44 ΦfZ
c.
4.44 ΦfT
d.
2.22 ΦfT
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Q109 mcq
Which of the following statements about a star connected three phase system is correct?
a.
The neutral wire has higher voltage than the phase wires.
b.
There are two neutral wires in a star connected three phase system.
c.
The neutral wire carries no current in case of balanced ideal load.
d.
The neutral wire is used for grounding purposes only.
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Q110 mcq
Two coils, A and B, have self-inductances of 120 μH and 300 μH, respectively. When a current of 1 A flows through coil A, it induces a flux linkage of 100 μWb turns in coil B. What is the mutual inductance between the coils?
a.
100 μH
b.
120 μH
c.
300 μH
d.
50 μH
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Q111 mcq
In a transformer, insulation resistance test is carried out to measure:
a.
the resistance of the insulation between windings and core
b.
the inductance between different parts of the transformer
c.
frequency
d.
magnetic flux
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Q112 mcq
What is the primary reason for conducting a vehicle road test?
a.
To test how fast the vehicle can go
b.
To increase fuel efficiency
c.
To ensure the vehicle is functioning safely and correctly
d.
To avoid the need for inspections
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Q113 mcq
What is the term used to describe programs that distinguish between uppercase and lowercase letters, treating "yes" and "YES" as different inputs?
a.
Numerical
b.
Alphabetical
c.
Case-sensitive
d.
Case-insensitive
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Q114 mcq
What is the importance of following the manufacturer's guidelines for DC motor maintenance?
a.
Saves time and resources
b.
Increases the motor's power output
c.
Modifies the motor's design
d.
Ensures safe and efficient operation
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Q115 mcq
Which type of electrolytic capacitor is generally more stable and has better performance in small sizes?
a.
Aluminium capacitor
b.
Mica capacitor
c.
Ceramic capacitor
d.
Tantalum capacitor
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Q116 mcq
What is the maximum total current allowed in a ring circuit as per IEE regulations?
a.
10 amps
b.
20 amps
c.
50 amps
d.
30 amps
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Q117 mcq
What are the two types of mica capacitors?
a.
Electrolytic and paper capacitors
b.
Stacked foil and silvered mica capacitors
c.
Ceramic and film capacitors
d.
Variable and fixed capacitors
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Q118 mcq
What is the objective of testing an earthing system?
a.
To measure the insulation resistance of cables
b.
To test the current capacity of the earthing system
c.
To ensure the system has a low resistance path to the earth
d.
To check the voltage levels
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Q119 mcq
A rectangular floor measuring 10 m × 8 m is to be tiled. If each tile covers 0.25 m², how many tiles are needed?
a.
300
b.
320
c.
250
d.
200
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Q120 mcq
Which of the following care and maintenance of a marking table is INCORRECT?
a.
The marking table should be protected from damage.
b.
The surface of the marking table should not be given a thin layer of oil.
c.
The marking table should be protected from rust.
d.
After use, the marking table should be cleaned with a soft cloth.
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Q121 mcq
What is the primary goal of the 5S concept?
a.
To eliminate the need for maintenance
b.
To increase the number of safety regulations
c.
To improve workplace organisation and efficiency
d.
To replace traditional safety measures
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Q122 mcq
Which of the following types of DC motor is commonly used in electric traction applications such as trains and trams?
a.
Permanent Magnet DC Motor
b.
DC Series Motor
c.
DC Compound Motor
d.
DC Shunt Motor
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Q123 mcq
Which of the following statements is/are true about Non-Functional Dimensions (NF) in engineering drawing? Statement 1: Non-functional Dimensions are shown without limits, as they do not affect the functionality of the component or space. Statement 2: Non-Functional Dimensions are typically used for reference purposes only, and do not impact the assembly or performance of the component or space.
a.
Neither statement is true
b.
Both statements are true
c.
Only statement 2 is true
d.
Only statement 1 is true
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Q124 mcq
What is the primary reason for the heating effect in a conductor when an electric current passes through it?
a.
The movement of protons causes heat generation.
b.
The movement of electrons causes heat generation.
c.
The electric field in the conductor causes heat generation.
d.
The conductor absorbs heat from the surrounding environment.
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Q125 mcq
In a circuit with a NTC type thermistor and a fixed resistor connected in series connected to a DC power supply, what will happen to the output voltage if there is a rise in temperature?
a.
The output voltage will decrease.
b.
The output voltage will remain constant.
c.
The output voltage will increase.
d.
The output voltage will fluctuate depending on the resistor value.
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Q126 mcq
What is the purpose of measuring the electrode resistance during the installation of an earthing system?
a.
To ensure proper grounding of electrical equipment
b.
To measure the insulation resistance of the system
c.
To ensure the earthing system has low impedance for fault current dissipation
d.
To determine the electrical load capacity of the system
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Q127 mcq
Which of the following is a primary difference between a primary and a secondary electrochemical cell?
a.
A primary cell can be recharged, while a secondary cell cannot be recharged.
b.
There is no difference between primary and secondary cells.
c.
A secondary cell produces more energy than a primary cell.
d.
A primary cell cannot be recharged, while a secondary cell can be recharged.
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Q128 mcq
Alternators are usually rated in:
a.
Horse Power
b.
Kilo Volt Ampere
c.
Kilo Watt
d.
Kilo Volt Ampere Reactive
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Q129 mcq
What is the pinch-off voltage in a FET?
a.
The voltage at which the channel is "pinched off" and the current saturates
b.
The voltage where the drain-to-source voltage causes breakdown
c.
The voltage at which the gate-to-source voltage is zero
d.
The voltage at which the drain-to-source current is maximised
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Q130 mcq
What is the primary purpose of preventive maintenance?
a.
To increase the workload of employees
b.
To delay repairs until breakdowns occur
c.
To eliminate the need for regular inspections
d.
To reduce unexpected equipment failures
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Q131 mcq
Which of the following is a major risk associated with fuel spillage?
a.
Increased productivity
b.
Better lubrication for workshop floors
c.
Fire hazards and environmental contamination
d.
Reduced need for ventilation
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Q132 mcq
In crane and hoist applications, why is a DC series motor preferred over a DC shunt motor?
a.
It consumes less power at no load.
b.
It maintains constant speed regardless of load variations.
c.
It provides a high starting torque, which is required for lifting loads.
d.
It requires minimal maintenance compared to other motors.
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Q133 mcq
What is the unit of measurement for earth fault loop impedance?
a.
Volts (V)
b.
Amperes (A)
c.
Farads (F)
d.
Ohms (Ω)
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Q134 mcq
Match the following designations of sheets with their respective trimmed sizes in length and breadth. Designation Trimmed Size A) A0 P) 297 × 420 B) A1 Q) 420 × 594 C) A2 R) 594 × 841 D) A3 S) 841 × 1189
a.
A-S ; B-R ; C-Q ; D-P
b.
A-S ; B-P ; C-Q ; D-R
c.
A-Q ; B-R ; C-S ; D-P
d.
A-P ; B-R ; C-Q ; D-S
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Q135 mcq
In pipe earthing, what is used to connect the earthing conductor to the pipe?
a.
Bolts and nuts
b.
Soldering
c.
Welding
d.
Tape
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Q136 mcq
In an N-channel MOSFET, the drain current ID​ increases as __________.
a.
the source-to-drain voltage decreases
b.
the drain-to-source voltage increases
c.
the gate-to-source voltage decreases
d.
the gate-to-source voltage increases above the threshold voltage
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Q137 mcq
The primary difference between a FET and a BJT is that _________.
a.
BJTs are more sensitive to temperature than FETs
b.
FETs are voltage-controlled devices, while BJTs are current-controlled devices
c.
FETs have a lower input impedance than BJTs
d.
FETs are current-controlled devices, while BJTs are voltage-controlled devices
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Q138 mcq
Read the Assertion (A) and Reason (R) carefully, and select the correct option. Assertion (A): The earth resistance must be kept as low as possible to ensure that the earthing system is effective during fault conditions. Reason (R): A low resistance allows fault current to flow easily into the ground, ensuring safety by preventing electrical hazards.
a.
Assertion (A) is correct, but Reason (R) is incorrect.
b.
Both Assertion (A) and Reason (R) are correct, but the reason does not correctly explain the assertion.
c.
Assertion (A) is incorrect, but Reason (R) is correct.
d.
Both Assertion (A) and Reason (R) are correct, and the reason correctly explains the assertion.
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Q139 mcq
Which electrical component is used to perform a polarity test to check whether or not the switches are connected in phase/live cable?
a.
Ammeter
b.
Megger
c.
Multimeter
d.
Test lamp
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Q140 mcq
Sine bars are used when a high degree of accuracy less than _________ is needed for measuring angles.
a.
30 minutes
b.
1 minute
c.
1 degree
d.
30 degrees
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Q141 mcq
The Insulation Resistance value for a transformer is measured in:
a.
megaohms
b.
KVA
c.
kiloohms
d.
ohms
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Q142 mcq
Which of the following is a key electrical safety tip in a workshop?
a.
Ignore frayed wires if the device is still working
b.
Operate machines with wet hands
c.
Ensure electrical equipment is properly grounded
d.
Use water to clean electrical panels
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Q143 mcq
How should the electrode resistance be measured if multiple earthing electrodes are used in parallel?
a.
Use a clamp meter to measure the resistance of parallel electrodes
b.
Measure electrode resistance individually and then average the values
c.
Measure electrode resistance individually and then add it
d.
Measure the total resistance of the combined electrodes in parallel
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Q144 mcq
IGBT (Insulated Gate Bipolar Transistor) has ________.
a.
high on-state resistance
b.
second breakdown problems
c.
low input impedance
d.
high input impedance
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Q145 mcq
The SI unit of 'ultimate stress' is ________.
a.
newton per meter (N/m)
b.
newton (N)
c.
pascal (Pa)
d.
joule per square meter (J/m ² )
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Q146 mcq
What should be the position of the ‘OFF’ marking on a fireman’s switch?
a.
At the bottom
b.
On the side
c.
At the top
d.
In the centre
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Q147 mcq
Which DC motor type provides the best speed regulation under varying loads?
a.
Cumulative Motor
b.
DC Shunt Motor
c.
Permanent Magnet DC Motor
d.
DC Series Motor
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Q148 mcq
Which of the following methods is used for synchronising a three-phase alternator?
a.
Using damper grids in pole faces
b.
Kramer's Method
c.
Three Dark lamp method
d.
One Wattmeter method
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Q149 mcq
Which of the following is true for a system with an unbalanced load of a three-phase system?
a.
The sum of phase angles of each phase is always 120°.
b.
In an unbalanced three-phase system, the neutral current is zero.
c.
The sum of the line currents is not necessarily zero.
d.
The line voltages are always equal.
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Q150 mcq
While performing short circuit test on a transformer to determine its parameter, instruments are placed on the:
a.
high voltage side, while the low voltage side is short circuit
b.
low voltage side, while the high voltage side is short circuit
c.
low voltage side, while the high voltage side is open circuit
d.
high voltage side, while the low voltage side is open circuit
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Q151 mcq
The voltage regulation in percentage for transformer is given by:
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Q152 mcq
_________________ recommend(s) 20 mm wide margins for sheet sizes AO and A1 in engineering drawings.
a.
Borders and frames: SP: 46 (2003)
b.
Custom grids
c.
Geographic coordinate systems
d.
Grid reference system
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Q153 mcq
Which option shows the correct answer when 27°C is converted to the kelvin scale?
a.
– 300 K
b.
300 K
c.
246 K
d.
– 246 K
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Q154 mcq
Which device is used to protect against electric shocks and fires caused by earth leakage currents?
a.
ELCB
b.
ECB
c.
MCCB
d.
MCB
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Q155 mcq
A 100-mm centre-punch could have a 10-mm diameter body and a 6-mm diameter point ground to an angle of _________.
a.
120°
b.
60°
c.
30°
d.
90°
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Q156 mcq
The energy stored (W) in an inductor is given by the formula _______, where C = Capacitance, V= Voltage, I = Current, and L= inductance.
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Q157 mcq
An angle greater than 180 degrees is referred to as ________________.
a.
an obtuse angle
b.
an acute angle
c.
a right angle
d.
a reflex angle
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Q158 mcq
Which of the following is a possible cause of an unbalanced load in a three-phase system?
a.
Symmetrical load across phases
b.
Equal phase currents
c.
Balanced supply voltages
d.
Differences in load resistance across phases
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Q159 mcq
A three phase circuit is connected with balanced delta connected load of impedance 100 Ω. If the current in each phase is 5 A, the voltage across each load will be ______.
a.
200 V
b.
250 V
c.
500 V
d.
150 V
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Q160 mcq
According to Ohm’s Law, how is current related to voltage and resistance?
a.
It is inversely proportional to voltage and resistance.
b.
It has no relation with voltage or resistance.
c.
It is directly proportional to voltage and resistance.
d.
It is directly proportional to voltage and inversely proportional to resistance.
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Q161 mcq
What is the primary purpose of shielding in electrical cables?
a.
To increase the current-carrying capacity of the cable
b.
To protect the cable from external electromagnetic interference
c.
To increase the voltage capacity of the cable
d.
To prevent heat loss from the cable
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Q162 mcq
For which of the following calipers, a screw and nut are provided for opening and closing the caliper legs?
a.
Firm joint calipers
b.
Spring joint calipers
c.
Leg and point calipers
d.
Simple calipers
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Q163 mcq
The correct instant of synchronising is when busbar and incoming machine voltages are of _________ magnitude and have ___________ frequency.
a.
unequal, unequal
b.
equal, the same
c.
unequal, the same
d.
equal, unequal
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Q164 mcq
The region of operation in a FET where the drain current is independent of the drain voltage and only depends on the gate-to-source voltage is called the ____________.
a.
saturation region
b.
ohmic region
c.
cutoff region
d.
active region
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Q165 mcq
Which component in an MCB is responsible for detecting a short circuit?
a.
Arc chute
b.
Bimetallic strip
c.
Solenoid
d.
Handle
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Q166 mcq
Which of the following is INCORRECT about line standard?
a.
Subject to parallax error
b.
More accurate due to line thickness
c.
Used to measure the distance between two engraved lines
d.
Quick measurements over a wide range
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Q167 mcq
The accuracy of measurement by a try square is about:
a.
0.004 mm per 10 mm length
b.
0.02 mm per 10 mm length
c.
0.002 mm per 10 mm length
d.
0.001 mm per 10 mm length
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Q168 mcq
Natural rubber is soft at high temperatures and brittle at low temperatures; hence raw rubber is heated with sulphur and other additives at a temperature range between 373 – 415 K to make it strong. This process is called ______ of rubber.
a.
molding
b.
latex
c.
extrusion
d.
vulcanisation
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Q169 mcq
Why do cars have treaded tyres?
a.
To increase speed
b.
To decrease friction
c.
To increase friction and grip on the road
d.
To reduce weight
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Q170 mcq
Which of the following types of resistors is preferred for high-current applications?
a.
Wire-wound resistor
b.
Carbon composition resistor
c.
Variable resistor
d.
Film resistor
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Q171 mcq
Why are alternators connected in parallel?
a.
To increase the output frequency
b.
To meet greater power demand of load circuit
c.
To increase the starting torque
d.
To improve the power factor
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Q172 mcq
Why is a DC compound generator preferred for industrial loads?
a.
It provides better efficiency.
b.
It has constant voltage characteristics.
c.
It has no losses.
d.
It is easier to manufacture.
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Q173 mcq
Which of the following conversions are correct?
a.
1 L = 1000 dm 3 and 1 mL = 1000 cm 3
b.
1 L = 1 dm 3 and 1 mL = 1 cm 3
c.
1000 L = 1 dm 3 and 1000 mL = 1 cm 3
d.
1000 L = 1 dm 3 and 1 mL = 1000 cm 3
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Q174 mcq
What is the primary cause of sudden insulation resistance failure in a DC generator?
a.
Excessive armature current
b.
High ambient temperature
c.
Moisture ingress or contamination
d.
Increase in rotational speed
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Q175 mcq
Transformer oil should have _______ dielectric strength and _______ viscosity.
a.
low; low
b.
high; high
c.
high; low
d.
low; high
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