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Which of the following ecosystems has very low temperatures and frozen soil?
Tundra
Grassland
Desert
Tropical rainforest
Correct answer
Tundra
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 conclusions logically follow(s) from the statements.
Statements: Some bananas are litchis. All litchis are kiwis. Some kiwis are strawberries.
Conclusions:
Only conclusion 2 follows
Neither conclusion 1 nor 2 follows
Only conclusion 1 follows
Both conclusions 1 and 2 follow
Correct answer
Only conclusion 1 follows
What is the term used to describe organisms that produce their own food in an ecosystem?
Producers
Herbivores
Consumers
Decomposers
Correct answer
Producers
A, B, C, D, E and F live on six different floors of the same building. The lowermost floor in the building is numbered 1, the floor above it is numbered 2 and so on till the topmost floor is numbered 6. D lives on an odd-numbered floor but not 3. The sum of floors on which D and E live is 7. A lives immediately below C. F lives on the top floor. How many people live between E and F?
2
4
3
1
Correct answer
3
Use of energy-efficient machineries in industrial settings primarily helps _____.
decrease operational efficiency
reduce industrial energy requirement and improve products' competitiveness.
increase energy consumption and thereby product cost
extend the lifespan of outdated equipment
Correct answer
reduce industrial energy requirement and improve products' competitiveness.
An ammeter has 20 divisions between 0 A and 2 A. The least count of ammeter is ______.
0.2 A
0.1 A
2 A
1 A
Correct answer
0.1 A
The rate of doing work is known as _______.
power
force
kinetic energy
potential energy
Correct answer
power
Match the columns.
| Engineering Applications | Type of Engineering Drawings |
|---|---|
| A) Plan, front elevation of homes to be built, foundation drawings | P) Mechanical Engineering Drawings |
| B) Circuit diagrams and Electrical installation drawings | Q) Electronics Engineering drawings |
| C) PCB tracks drawings | R) Electrical Engineering drawings |
| D) Riveted joints and Welded joints | S) Civil Engineering drawings |
A-S ; B-R ; C-P ; D-Q
A-S ; B-R ; C-Q ; D-P
A-P ; B-R ; C-Q ; D-S
A-S ; B-P ; C-Q ; D-R
Correct answer
A-S ; B-R ; C-Q ; D-P
The area of a regular polygon with a side of 8 cm is 112 cm². If the perpendicular distance from the centre to the side of the polygon is 7 cm, then the number of sides of the polygon is:
6
7
5
4
Correct answer
4
Which of the following is a geometrical figure with a three-dimensional geometry that has eight vertices and six rectangular faces?
Cuboid
Parallelogram
Cylinder
Pyramid
Correct answer
Cuboid
In the following number-pairs, the second number is obtained by applying certain mathematical operations to the first number. Which numbers should replace X and Y so that the pattern followed by the two numbers on the left side of :: is same as that on the right side of ::?
(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.)
X : 85 :: 36 : Y
X = 43, Y = 77
X = 44, Y = 73
X = 42, Y = 71
X = 42, Y = 73
Correct answer
X = 42, Y = 73
Two plumbers, X and Y, are paid a total of ₹770 per day by their employer. If X is paid 140% of the sum paid to Y, then how much is Y paid (in ₹, rounded off to two decimal places) per day?
320.83
270.83
220.83
370.83
Correct answer
320.83
Which of the following statements is/are true about Functional Dimensions (F) in engineering drawing?
Statement 1: Functional Dimensions are essential to the function of the component or space. Statement 2: Functional Dimensions are typically shown without limits. Statement 3: Functional Dimensions are only shown for reference purposes.
Only statements 1 and 2 are true
Only statement 1 is true
Only statement 3 is true
Only statements 2 and 3 are true
Correct answer
Only statement 1 is true
Which of the following is true?
Both insulators and conductors allow heat to pass through them easily.
Wood is a good conductor of heat.
Plastic is a good conductor of heat.
In a kitchen, aluminium vessels are used because aluminium is a good conductor of heat.
Correct answer
In a kitchen, aluminium vessels are used because aluminium is a good conductor of heat.
What should come in place of the question mark (?) in the given series?
185 174 163 152 ? 130
143
142
144
141
Correct answer
141
In the following triad, each group of letters is related to the subsequent one following a certain logic. Select from the given options, the one which follows the same logic.
TERM–ERTM–TMRE
USER–RESU–REUS
VICE–ICVE–VECI
WHEN–HWEN–WENH
ZERO–EZRO–ZREO
Correct answer
VICE–ICVE–VECI
Which of the following is the work done by the gravitational force on the object of mass 50 kg when the object is moved from one point to another point along a horizontal line (g = 10 m/s²)?
50 J
Zero
500 J
−500 J
Correct answer
Zero
Study the given bar-graph and answer the question that follows.
The given bar-graph indicates the number of flats sold by a builder in five different cities in 2020.
The number of flats sold in Delhi is what percentage more than the number of flats sold in Mumbai?
150%
75%
120%
125%
Correct answer
150%
Which of the following letter-clusters should replace # and % so that the pattern and relationship followed between the letter-cluster pair on the left side of :: is the same as that on the right side of ::?
Correct answer
From a rectangular cardboard sheet of length 46 m and breadth 8 m, three circular plates of radii 3 m, 2 m and 1 m are cut out. If the area of the remaining part of the cardboard sheet is equal to the area of a square, then find the length of each side of the square (use π = 22/7).
18 m
14 m
16 m
20 m
Correct answer
18 m
In hot climate regions, the outer walls of the house are preferred to be white in colour because _______.
white colour looks good
white colour makes the wall more durable
white colour absorbs more sunlight to make the house bright
white colour reflects sunlight to make the interior of the house cool
Correct answer
white colour reflects sunlight to make the interior of the house cool
Convert 1 kilowatt hour (kW h) into joule.
1 kw h = 3.6 × 10⁵ J
1 kw h = 3.6 × 10³ J
1 kw h = 3.6 × 10⁷ J
1 kw h = 3.6 × 10⁶ J
Correct answer
1 kw h = 3.6 × 10⁶ J
A fruit seller initially had some apples. He sold 40% of those and still had 300 apples. How many apples did he initially have?
600
450
500
750
Correct answer
500
Ten people are sitting in two parallel rows with five people each in such a way that there is equal distance between adjacent persons. In row I, A, B, C, D and E are seated and all of them are facing south. In row II, R, S, T, U and V are seated and all of them are facing north. Thus each person faces another person from the other row. A sits at the extreme right end of their row and is facing U. R sits at the centre of their row and is facing C. E sits between C and D and is facing T. S sits at the extreme right end of their row. Who sits exactly opposite B?
U
T
R
V
Correct answer
V
Which of the following is the safest method for disposing of toxic dust?
Dumping it in regular trash bins
Releasing it into the air for dilution
Sweeping it into open areas
Using specialised hazardous waste disposal containers
Correct answer
Using specialised hazardous waste disposal containers
What is the total circuit resistance if it contains resistors 10 Ω, 20 Ω and 60 Ω, connected in parallel?
90 Ω
60 Ω
20 Ω
6 Ω
Correct answer
6 Ω
What should come in place of the question mark (?) in the given alpha-numeric series? G5, I10, L15, N20, Q25, S30, ?
W35
V35
V40
U35
Correct answer
V35
Find the value of x² + y², given the following.
x = 7 + √5, y = 7 - √5
124
96
108
137
Correct answer
108
Which of the following relations is NOT correct?
Electric Power = (Current)² × Resistance
Electric Power = (Voltage)² / Resistance
Electric Power = Voltage / Current
Electric Power = Voltage × Current
Correct answer
Electric Power = Voltage / Current
Which of the following statements is/are true? Statement 1: Heat conductors allow heat to pass through them easily. Statement 2: All plastics are good conductors of heat.
Neither statement 1 nor 2
Only statement 2
Both statements 1 and 2
Only statement 1
Correct answer
Only statement 1
Refer to the following letter and symbol series and answer the question that follows. Counting to be done from left to right only. (Left) ^ T J # * £ B L R Ω Y # E % S U K Q & (Right) How many such letters are there, each of which is immediately preceded by a letter and also immediately followed by a symbol?
Four
Three
Two
One
Correct answer
Four
Which of the following is a supplementary protocol that allows non-ASCII data to be sent through e-mail?
Multipurpose Internet Mail Extensions (MIME)
DNS
HTTPS
Mailing Lists
Correct answer
Multipurpose Internet Mail Extensions (MIME)
An ammeter of range 0 to 10 A shows a current of 7.5 A. If its true value is 6.2 A, the relative error is ______.
17.33%
4.8%
13%
20.96%
Correct answer
20.96%
Jaspreet deposited a sum of ₹58,550 at 20% rate of interest per annum, compounded annually. The total amount (in ₹) received by Jaspreet after 2 years will be:
83,876
84,312
84,735
84,700
Correct answer
84,312
Which of the following expressions is NOT correct for electric power?
P = I²R
P = I² / R
P = VI
P = V² / R
Correct answer
P = I² / R
A piece of rod 8/9 metre long is broken into two pieces. If one piece is 1/3 metre long, find the length (in m) of the other piece.
4/9
7/9
5/9
2/9
Correct answer
5/9
Which of the following noise levels is considered potentially harmful to human health if experienced over extended periods?
30 dB
90 dB
70 dB
50 dB
Correct answer
90 dB
Kinetic energy and potential energy together are called which form of energy?
Chemical
Mechanical
Thermal
Nuclear
Correct answer
Mechanical
What should be done immediately after a fuel spillage in a workshop?
Leave it unattended and inform the supervisor later
Use water to wash it away
Cover it with plastic to prevent evaporation
Evacuate the area and contain the spill using absorbent materials
Correct answer
Evacuate the area and contain the spill using absorbent materials
The areas of three adjacent faces of a solid cuboid are 216 cm², 114 cm² and 19 cm². What is the volume (in cm³) of the cuboid?
532
880
684
955
Correct answer
684
What is the primary source of energy for most of the ecosystems?
Water
Sunlight
Soil
Wind
Correct answer
Sunlight
How many base units are used to measure the physical quantities, according to SI units system?
5
4
10
7
Correct answer
7
If 'A' stands for '÷', 'B' stands for '×', 'C' stands for '+' and 'D' stands for '−', what will come in place of the question mark (?) in the following equation? 38 C 32 A 4 D 5 B 7 = ?
9
10
11
8
Correct answer
11
Which of the following will verify the credentials and documents of applicants uploaded on National Scholarship Portal?
University/Institute in which applicant is studying
National Scholarship Portal
Third party
Government
Correct answer
University/Institute in which applicant is studying
A cube with a mass of 5.74 g occupies a volume of 1.2 cm³. The density (in g/cm³) expressed with the correct number of significant figures is _______.
4.8
4.78
4.783
4.7833
Correct answer
4.8
The weight of an object on Earth is 60 N. What is its weight on the surface of the moon?
60 N
6 N
600 N
10 N
Correct answer
10 N
Which of the following orders of components is primarily responsible for executing instructions, storing permanent firmware, temporarily storing data during program execution and providing a platform for interconnecting hardware components on a computer motherboard?
CPU - ROM - RAM - PCB
CPU - RAM - ROM - PCB
RAM - ROM - CPU - PCB
PCB - ROM - CPU - RAM
Correct answer
CPU - ROM - RAM - PCB
In the SI system, which of the following options best describes the base quantities?
Distance, speed, acceleration
Length, mass, time
Temperature, pressure, volume
Force, power, energy
Correct answer
Length, mass, time
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 two people sit between P and Q. A faces the person sitting to the immediate left of P. R sits to the immediate left of S. D sits to the immediate right of C. Who among the following faces P?
A
B
C
D
Correct answer
B
Which of the following actions can help prevent slip and fall injuries?
Ignoring clutter in walkways
Wearing loose footwear for comfort
Cleaning up spills immediately and using warning signs
Walking on wet floors carefully
Correct answer
Cleaning up spills immediately and using warning signs
A man purchased two varieties of pens at the rates of ₹8 for 9 pens and ₹8 per pen. If he purchased an equal number of pens of each of the two varieties and then sold all his pens at ₹6 per pen, what was his profit percentage?
33%
45%
35%
32%
Correct answer
35%
Ganpat starts from Point A and walks 18 m towards west. He takes a left turn, walks 32 m, takes a left turn, walks 26 m, turns left, walks 61 m and stops at Point B. Meena starts from Point Z, which is 22 m towards the east of Point A. She walks 42 m towards north, takes a right turn, walks 35 m, turns right and walks 13 m and stops at Point Y. What is the shortest distance between Point B and Point Y? (All turns are 90-degree turns only.)
52 m
49 m
57 m
43 m
Correct answer
49 m
Which of the following statements is correct about negative work done?
Work done cannot be negative.
Work done is negative when the force and displacement are in the same direction.
Work done is negative when the force is perpendicular to the displacement.
Work done is negative when the force acts opposite to the direction of displacement.
Correct answer
Work done is negative when the force acts opposite to the direction of displacement.
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.)
AH – JR
GN – PV
HO – QW
JQ – SY
Correct answer
AH – JR
A 280 m long train running at a speed of 72 km/hr passes a platform in 30 seconds. Find the length of the platform (in m).
335
320
280
300
Correct answer
320
Amit's income in 2019 was ₹27,000. He gets an increment of 10% every year. What was his income (in ₹) in 2021?
27,000
32,670
29,700
32,400
Correct answer
32,670
In a certain code language, ‘A + B’ means ‘A is the mother 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 E related to T if ‘E & F + G − H × T’?
Wife’s mother’s father
Wife’s mother’s brother
Wife’s brother
Wife’s father
Correct answer
Wife’s mother’s father
What does the symbol given below denote in a circuit diagram?
Voltmeter
Variable resistor
Voltage source
Resistor
Correct answer
Variable resistor
A dozen pairs of jeans quoted at ₹3,520 are available at a discount of 35%. How many pairs of jeans can be bought for ₹572?
3
5
1
2
Correct answer
3
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: I. Some desks are tables. II. All tables are cabinets. III. All cabinets are beds.
Conclusions: I. Some beds are tables. II. All cabinets are desks.
Neither conclusion I nor conclusion II follows.
Only conclusion I follows.
Only conclusion II follows.
Both conclusions I and II follow.
Correct answer
Only conclusion I follows.
In a certain code language, ‘CARD’ is coded as ‘8674’ and ‘MICE’ is coded as ‘3517’. What is the code for ‘C’ in the given code language?
7
1
8
6
Correct answer
7
Based on the English alphabetical order, three of the following four letter-clusters are alike in a certain way and thus form a group. Which letter-cluster 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.)
FLNS
LRTY
GMOT
NTVB
Correct answer
NTVB
Four resistors of 4 ohm each are connected in parallel. Four such parallel combinations are then connected in series. The equivalent resistance is ________.
3 ohm
2 ohm
1 ohm
4 ohm
Correct answer
4 ohm
The average of three numbers is 20. If two numbers are 16 and 24, the third number is:
22
19
20
21
Correct answer
20
Vijay rides a bicycle 10 m from home to his tuition, then 5 m to a shop. He travels back home the same way, covering the same distance. What is his total path length?
Zero
30 m
15 m
20 m
Correct answer
30 m
Each of Preeti, Kiran, Grace, Ankit, Deepak, Nitin and Neelam has an exam on a different day of a week, starting from Monday and ending on Sunday of the same week. Preeti has an exam on Thursday. Only one person has an exam between Preeti and Nitin. Grace has exam on the day immediately before Nitin but not on a Monday. Only two people have exams between Grace and Deepak. Neelam’s exam is on one of the days before Ankit's but on one of the days after Kiran's. Who among the following has an exam on Monday?
Deepak
Nitin
Neelam
Kiran
Correct answer
Kiran
Which of the following statements regarding the use of a fire extinguisher is/are correct?
Statement 1: It is safe to attempt to extinguish any fire regardless of the presence of toxic smoke. Statement 2: The P.A.S.S. technique, which stands for Pull, Aim, Squeeze and Sweep, is recommended for the effective use of a fire extinguisher.
Both Statements 1 and 2 are correct.
Only Statement 2 is correct.
Neither Statement 1 nor 2 is correct.
Only Statement 1 is correct.
Correct answer
Only Statement 2 is correct.
Which of the following best describes the primary function of a digital signature in electronic communication?
It automatically archives all electronic documents for future reference.
It allows the recipient to edit the document before signing.
It encrypts the entire message content to ensure privacy.
It verifies the identity of the sender and ensures the integrity of the message.
Correct answer
It verifies the identity of the sender and ensures the integrity of the message.
Study the given diagram carefully and answer the question that follows. The numbers in different sections indicate the number of children preferring different desserts.
How many children prefer both pastries and ice creams but NOT chocolates?
7
8
6
9
Correct answer
8
Megha bought a bag for ₹1,271 after getting a discount of 18% on its marked price. Find the marked price of the bag.
₹1,450
₹1,550
₹1,350
₹1,650
Correct answer
₹1,550
The sum of the ages of Yash and his father is 90 years. When Yash is as old as his father's present age, he will be five times as old as his son Suraj's present age. Suraj will be 12 years older than Yash's present age, when Yash is as old as his father at present. How old is Suraj at present?
15 years
18 years
12 years
16 years
Correct answer
12 years
Simplify 976 × 265 + 976 × 735.
876000
976000
752800
658200
Correct answer
976000
What should come in place of the question mark (?) in the given series?
893 891 889 887 ? 883
985
885
886
986
Correct answer
885
The average of 5 results is 51 and that of the first 4 is 50. The 5th result is _____.
50
55
51
54
Correct answer
55
Rinku riding his car covers 136 metres in 17 seconds. What is his speed (in km/hr)?
26
28.8
11.6
17
Correct answer
28.8
Potential energy belongs to which of the following categories of energy?
Heat energy
Mechanical energy
Light energy
Chemical energy
Correct answer
Mechanical energy
Which of the following is NOT a valid representation of electrical power P in a circuit? (The current, potential difference and resistance are written symbolically as I, V and R, respectively.)
P = IR²
P = VI
P = V²/R
P = I²R
Correct answer
P = IR²
Which type of thermometer is used for measuring the internal temperature of ice?
Infrared thermometer
Digital thermometer
Clinical thermometer
Laboratory thermometer
Correct answer
Laboratory thermometer
According to the ISO-A size series, what is the designation of a trimmed sheet with dimensions 297 mm × 420 mm?
A2
A3
A1
A4
Correct answer
A3
On which of the following factors does the resistivity of a conductor depend?
Diameter of the conductor
Area of the conductor
Nature of the conductor
Mass of the conductor
Correct answer
Nature of the conductor
What is the value of 10 km/hr in SI units?
0.16 m/s
2.7 m/s
10 m/s
1000 m/s
Correct answer
2.7 m/s
Refer to the following letter and symbol series and answer the question that follows. Counting to be done from left to right only.
(Left) L R Ω Y A $ K ^ T J # Q & # E % S U * £ B (Right)
How many such symbols are there, each of which is immediately preceded by a vowel and also immediately followed by a letter$?
Three
Two
One
Four
Correct answer
Two
Which of the following is NOT a benefit of use of mobile governance using ICT?
Reduced costs for the government
Increased efficiency in government processes
Increased transparency and accountability in the government
Improved access to government services for citizens
Correct answer
Reduced costs for the government
If A is an acute angle and p tan A = n sec A, then what is the value of (p² - n²) / (p n) ?
cos A cot A
sin A cos A
cot A cos A
tan A / sec A
Correct answer
sin A cos A
6 men or 5 women can complete a job in 7 days. 6 men work for 5 days and leave. The number of women required to complete the remaining work in 5 days is:
4
1
3
2
Correct answer
2
Two resistors of resistance 20 Ω and 30 Ω are connected in series in a circuit. What is the current flow in the circuit if the voltage given is 250 V?
5 A
20 A
8 A
12 A
Correct answer
5 A
Which of the following is the best way to identify workplace hazards?
Waiting for an incident to occur
Relying on employees to report accidents
Conducting regular safety inspections
Ignoring small risks
Correct answer
Conducting regular safety inspections
In a hospital, the ratio between the number of doctors and the number of nurses was 1 : 3. When 12 new doctors joined the hospital and 24 nurses left the hospital, the ratio became 3 : 4. After the resignation of k more nurses from the hospital, the ratio becomes 1 : 1. Find the value of k.
12
28
24
26
Correct answer
12
If 5/9 of a number is 6 more than 1/2 of the number, then what is the number?
106
104
108
102
Correct answer
108
If x³ + y³ = 16 and x + y = 4, what is the value of xy?
1.0
2.2
4
3
Correct answer
4
What is the average human body temperature?
37°C
42°C
40°C
32°C
Correct answer
37°C
In the following series, only one letter-cluster is incorrect. Select the INCORRECT letter-cluster.
PCO MEM JGK GIJ DKG AME
JGK
DKG
AME
GIJ
Correct answer
GIJ
Which of the following devices is used to measure temperature?
Odometer
Hygrometer
Voltmeter
Thermometer
Correct answer
Thermometer
Which of the following statements about geometric figures is/are true?
Only statement 2 is true
Only statement 1 is true
Both statements 1 and 2 are true
Neither statement 1 nor 2 is true
Correct answer
Only statement 1 is true
Two sets of numbers are given below. In each set of numbers, certain mathematical operation(s) on the first number result(s) in the second number. Similarly, certain mathematical operation(s) on the second number result(s) 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.)
3 - 9 - 12 - 24; 4 - 16 - 20 - 40
6 - 12 - 18 - 34
1 - 1 - 2 - 4
9 - 2 - 11 - 24
7 - 49 - 56 - 122
Correct answer
1 - 1 - 2 - 4
A copper spoon is dipped in hot water. What happens to its other end?
It becomes cold by conduction.
It becomes hot by conduction.
It becomes cold by convection.
It becomes hot by convection.
Correct answer
It becomes hot by conduction.
If 50 : x :: x : 32, and x > 0, then find the value of x.
40
40.6
38.7
45.8
Correct answer
40
In a certain code language, ‘BARE’ is coded as ‘8264’ and ‘RIDS’ is coded as ‘3587’. What is the code for ‘R’ in the given code language?
5
8
3
6
Correct answer
8
A cistern has two inlets I1 and I2. I1 alone can fill it in 8 hours and I2 in 4 hours. If both the inlets are open, what will be the time required to fill the cistern.
2 hours
3 2/3 hours
2 2/3 hours
4 2/3 hours
Correct answer
2 2/3 hours
What is the phase difference between the line voltage and phase voltage in a star-connected load?
120°
30°
90°
0°
Correct answer
30°
Calculate the voltage regulation (in percentage) of the transformer if the no load secondary voltage is 250 V and full load secondary voltage is 200 V?
50%
25%
20%
100%
Correct answer
25%
In the open circuit test of a transformer, the supply frequency should be:
lower than the rated frequency
independent of the rated frequency
higher than the rated frequency
equal to the rated frequency
Correct answer
equal to the rated frequency
A TRIAC (Triode for Alternating Current) is a __________ device.
Bilateral device
Unilateral device
One-terminal device
Two-terminal device
Correct answer
Bilateral device
A DC generator is running at constant speed. If the load current increases, what happens to the terminal voltage?
Increases
Decreases
Fluctuates randomly
Remains constant
Correct answer
Decreases
Why is it important for every person to follow safety procedures in the workplace?
To reduce operational costs significantly
To minimise risks and avoid accidents
To increase overall production efficiency
To limit the need for frequent supervision
Correct answer
To minimise risks and avoid accidents
Which of the following vices consists of a handle and a small collet chuck at one end?
Toolmaker’s vice
Pipe vice
Hand vice
Pin vice
Correct answer
Pin vice
What type of components are used for tapping in the ring main system?
Directly from the main supply
Through fuses and controlling switches
Through capacitors
Using transformers
Correct answer
Through fuses and controlling switches
What is a key advantage of using MOSFETs in electronic circuits compared to other types of transistors?
Ability to amplify both AC and DC signals
High input impedance and low power consumption
Ability to handle higher voltages and currents than BJTs
High frequency response
Correct answer
High input impedance and low power consumption
In rotating armature type alternator, magnetic field is produced by:
Commutator
DC electromagnets placed on stator
Slip rings on rotor
Slip rings and brushes
Correct answer
DC electromagnets placed on stator
Arrange the following steps in the correct order to draw an equilateral triangle with each side of 35 mm.
1, 2, 4, 3
2, 1, 3, 4
2, 3, 1, 4
3, 2, 1, 4
Correct answer
2, 3, 1, 4
Which of the following best describes the construction of a mica capacitor?
A ceramic disc with metal coatings
A thin polymer film rolled into a cylinder
A liquid electrolyte between two aluminium plates
Alternating layers of metal foil and mica sheets
Correct answer
Alternating layers of metal foil and mica sheets
Which component in a magnetic hydraulic MCB holds the ferrous plunger?
A non-ferrous tube
A bimetallic strip
A thermal coil
A fuse element
Correct answer
A non-ferrous tube
Which of the following is a characteristic of an SCR?
It cannot control the flow of current.
It is a two-terminal device.
It has no gate terminal.
It is a four-layer, three-junction device.
Correct answer
It is a four-layer, three-junction device.
The magnitude of EMF induced by an alternator is given as: (Given: B is the flux density, L is the length of the conductors, V is the velocity of the rotation and q is the angle at which the conductor cuts the line of force)
BLV Cosq
(BV Cosq)L
BLV Sinq
(BL Sinq)/V
Correct answer
BLV Sinq
Gaskets, seals and spacers are made using:
centre punch
prick punch
hollow punch
pin punch
Correct answer
hollow punch
According to BIS SP 46-2003, which of the following applications is correctly represented by a chain-thin line in engineering drawings?
Hidden edges
Dimension lines
Visible edges
Center lines
Correct answer
Center lines
Alternators run at a speed _______ synchronous speed.
less than or greater than
only greater than
equal to
only less than
Correct answer
equal to
A transformer's open circuit test is used to determine:
core losses and no load current
stray loss
copper loss
windage loss
Correct answer
core losses and no load current
How long does a fuse element take to melt when carrying twice its rated current?
2 minutes
5 minutes
30 seconds
1 minute
Correct answer
2 minutes
A 20 kVA, 2500/250 V, 50 Hz, single phase transformer gave the open circuit test result (on low voltage side) as 250 V, 1.6 A and 100 W; then no load power factor is:
0.15
0.1
0.2
0.25
Correct answer
0.25
If two inductors are connected in series with mutual inductance M (aiding), what is the equivalent inductance?
Lₑᵩ = (L₁ + L₂)/(L₁ * L₂)
Lₑᵩ = L₁ + L₂ − 2M
Lₑᵩ = L₁ + L₂ + 2M
Lₑᵩ = (L₁ + L₂)/2
Correct answer
Lₑᵩ = L₁ + L₂ + 2M
What should you do to ensure your personal safety at work?
Wear personal protective equipment.
Take risks to finish tasks quickly.
Work in a hurry without checking equipment.
Ignore warning signs and instructions.
Correct answer
Wear personal protective equipment.
In star connected alternator, the relation between line voltage, Eₗ and phase voltage, Eₚₕ is given by:
Eₗ = 3Eₚₕ
Eₗ = √3Eₚₕ
Eₗ = 1/3Eₚₕ
Eₗ = Eₚₕ
Correct answer
Eₗ = √3Eₚₕ
Low speed diesel engine alternators employ rotor of __________ type.
cylindrical stator construction
rotating armature construction
salient pole construction
slip ring construction
Correct answer
salient pole construction
At what overload percentage does the solenoid attract the armature fully, causing instantaneous tripping in a MCB?
1000%
700%
130%
300%
Correct answer
700%
In a lead-acid battery, what is the chemical composition of the material used for the positive plate during discharge?
Sulphuric acid (H₂SO₄)
Lead (Pb)
Lead dioxide (PbO₂)
Lead sulfate (PbSO₄)
Correct answer
Lead dioxide (PbO₂)
What is the primary material used in the resistance wire of wire-wound resistors?
Nichrome
Copper
Silver
Aluminium
Correct answer
Nichrome
When selecting a sheet size for an original drawing, what should be the primary consideration?
The size of the reproduction.
The clarity and resolution required.
The orientation of the drawing (horizontal or vertical).
The standard size of the drawing office.
Correct answer
The clarity and resolution required.
Which of the following instruments is used to test the earth resistance of an earthing system?
Megger
Clamp meter
Multimeter
Oscilloscope
Correct answer
Megger
Which of the following files is used for filing narrow grooves and angles above 10°?
Knife-edge file
Triangular file
Half round file
Square file
Correct answer
Knife-edge file
Which of the following is an important safety measure during a power failure?
Continuing to use equipment without verifying power status
Ensuring all machines and electrical equipment are turned off
Using candles for lighting
Ignoring alarm systems
Correct answer
Ensuring all machines and electrical equipment are turned off
A 220 V shunt generator has a field resistance of 110 Ω. What is the field current?
5 A
10 A
20 A
2 A
Correct answer
2 A
In a velocity-time graph, the negative slope represents _____.
distance
acceleration
retardation
displacement
Correct answer
retardation
Non-functional dimensions are _______________.
derived from the values of the related features of a drawing
essential for the function of the space or component
directly derived from the values given on a drawing
not essential for the function of the space or component
Correct answer
not essential for the function of the space or component
In the context of earthing in an electrical system, _______ has the greatest impact on earth resistance.
soil resistivity
the material of the grounding rod
the voltage applied to the ground
the length of the earthing conductor
Correct answer
soil resistivity
What type of device is a UJT?
Bipolar junction device
Metal-oxide-semiconductor device
Unipolar junction device
Optical device
Correct answer
Unipolar junction device
A 20 kVA, 2500/250 V, 50 Hz, single phase transformer gave the open circuit test result (on low voltage side) as 250 V and 100 W; then core loss current is:
0.3 A
0.4 A
0.2 A
0.1 A
Correct answer
0.4 A
Which of the following hand-operated drilling machines is used for drilling small diameter holes up to 6 mm?
Breast drilling machine
Bevel gear type drilling machine
Ratchet drilling machine
Electric hand drill
Correct answer
Bevel gear type drilling machine
What is the primary reason for electrical injuries when a person comes in contact with electrical equipment?
Electrical devices are too powerful.
Electrical equipment is not properly grounded.
Devices are used for too long.
Current flows through the body causing harm.
Correct answer
Current flows through the body causing harm.
A circuit consists of three resistors; 15 ohms, 10 ohms, and 20 ohms. The 15-ohm resistor is in series with the parallel combination of the 10-ohm and 20-ohm resistors. If a 24 V battery is applied across the circuit, what is the total current flowing through the circuit?
2.1 A
1.1 A
0.1 A
3.1 A
Correct answer
1.1 A
Permeability of ideal transformer core is equal to:
infinite
unity
low value
zero
Correct answer
infinite
In a three-phase, balanced system, if the load is purely resistive, the line current is ___________.
90° ahead of the line voltage
90° behind the line voltage
unrelated to the line voltage
in phase with the line voltage
Correct answer
in phase with the line voltage
Read the given statements carefully and select the correct option.
Statement 1: Plate earthing ensures a low-resistance path for fault current to safely flow into the earth. Statement 2: The resistance of the earthing system is not affected by the soil type or moisture content.
Statement 1 is correct, but Statement 2 is incorrect.
Both Statement 1 and Statement 2 are incorrect.
Statement 1 is incorrect, but Statement 2 is correct.
Both Statement 1 and Statement 2 are correct.
Correct answer
Statement 1 is correct, but Statement 2 is incorrect.
If the current flowing through a conductor is 5 A and the resistance of the conductor is 10 ohms, what will be the voltage across the conductor, according to Ohm's Law?
5 V
50 V
10 V
15 V
Correct answer
50 V
When a strong magnet is placed near a weak magnet, what will likely happen?
The strong magnet will lose its magnetism.
The strong magnet will induce magnetism in the weak magnet.
The weak magnet will disappear.
The weak magnet will repel the strong magnet.
Correct answer
The strong magnet will induce magnetism in the weak magnet.
What is the effect of increasing the field current in a DC shunt motor?
The motor speed decreases.
The motor speed increases.
The motor stops immediately.
The torque decreases.
Correct answer
The motor speed decreases.
Which of the following parts of a file is the part fitted to the tang for holding the file?
Edge
Handle
Tang
Tip or Point
Correct answer
Handle
Where are ceramic capacitors commonly used?
High-power motors
Transformers
Mobile Phones
TV circuits
Correct answer
TV circuits
Which of the following organisations is responsible for enforcing workplace safety regulations in India?
World Health Organization (WHO)
Food and Drug Administration (FDA)
Directorate General of Factory Advice Service and Labour Institutes (DGFASLI)
Environmental Protection Agency (EPA)
Correct answer
Directorate General of Factory Advice Service and Labour Institutes (DGFASLI)
A drawing instrument box is used to carry all ______________ instruments.
screening
drilling
drawing
casting
Correct answer
drawing
What is the advantage of giving heat treatment to a material?
To make surgical knives of sharp edges
To increase the weight of the material
To decrease the melting point of the material
To change it from one element to another element
Correct answer
To make surgical knives of sharp edges
For what purpose are pins and clips used in engineering drawings?
To fasten the drawing sheet on to the drawing board firmly so that it does not shake
To draw horizontal lines, parallel lines and to guide/hold the set squares
To transfer dimensions and dividing lines into a number of equal parts
To support the drawing paper/tracing paper for making drawings
Correct answer
To fasten the drawing sheet on to the drawing board firmly so that it does not shake
If [Formula above], find cos θ.
5/4
3/5
4/5
3/4
Correct answer
4/5
What is the primary use of a Unijunction Transistor (UJT) in electronic circuits?
Frequency modulation
Triggering of SCRs and TRIACs
Voltage regulation
Amplification of signals
Correct answer
Triggering of SCRs and TRIACs
A circular hole of radius 3 cm is cut from a rectangular sheet of dimensions 12 cm × 10 cm. Find the remaining area.
(Take π = 3.14)
95.86 cm²
100 cm²
75.74 cm²
91.74 cm²
Correct answer
91.74 cm²
What happens if the gate current is removed while a TRIAC is conducting?
The TRIAC will not be affected.
The TRIAC will remain conducting until the current falls below the holding current.
The TRIAC will stop conducting.
The TRIAC will behave like a short circuit.
Correct answer
The TRIAC will remain conducting until the current falls below the holding current.
Air-cored inductors are most commonly used in circuits operating at/in:
high frequencies from 1 MHz to several hundred MHz
audio frequency range (20 Hz – 20 kHz)
low frequencies below 50 Hz
DC power supply circuits
Correct answer
high frequencies from 1 MHz to several hundred MHz
Which of the following options is correct? Statement 1: In a balanced three-phase system, the power delivered to the load depends on both the phase current and the phase voltage. Statement 2: The line voltage in a star-connected system is always greater than the phase voltage by a factor of √3.
Both Statement 1 and Statement 2 are true.
Statement 1 is true, and Statement 2 is false.
Statement 1 is false, and Statement 2 is true.
Both Statement 1 and Statement 2 are false.
Correct answer
Both Statement 1 and Statement 2 are true.
Which of the following types of pliers is used to shape loops in wires and to form curves in light metal strips?
Flat nose pliers
End cutting pliers
Round nose pliers
Slip-joint pliers
Correct answer
Round nose pliers
When measuring the resistance of a resistor using an ohmmeter, what does a reading of zero resistance indicate?
The ohmmeter is malfunctioning.
The resistor is open-circuited.
The resistor is functioning normally.
The resistor is short-circuited.
Correct answer
The resistor is short-circuited.
What is the sum of (3/8) + (5/12)?
7/12
17/24
8/20
19/24
Correct answer
19/24
What is the main purpose of continuity testing in a DC generator?
To check voltage regulation
To detect open or broken windings
To test insulation resistance
To measure current flow
Correct answer
To detect open or broken windings
Which of the following statements is NOT true if any electrical system is not properly earthed?
It may lead to damage of electrical equipment.
It can increase the risk of electric shock.
It provides voltage constant voltage supply regardless of perturbation in load side.
It may cause the electric current to flow in an uncontrolled manner.
Correct answer
It provides voltage constant voltage supply regardless of perturbation in load side.
What is the purpose of an emergency evacuation plan?
To increase productivity
To ensure safe and orderly evacuation during emergencies
To allow workers to leave early
To avoid safety drills
Correct answer
To ensure safe and orderly evacuation during emergencies
Which of the following is a key safety measure to follow when installing an earthing system?
Ensure the earthing system is properly inspected and tested for safety compliance.
Use flexible conductors for earthing connections.
Use thin copper wires for earthing to reduce costs.
Ensure the earthing system is designed for maximum efficiency.
Correct answer
Ensure the earthing system is properly inspected and tested for safety compliance.
IEEE 80 provides recommendations for _______.
voltage regulation in power systems
measurement of electrical power consumption
proper installation of grounding and bonding systems in electrical installations
standards for electrical insulation materials
Correct answer
proper installation of grounding and bonding systems in electrical installations
Why is armature resistance control NOT suitable for speed control in high-power DC motors?
It causes high torque fluctuations.
It increases field current.
It results in poor efficiency due to high power loss.
It cannot reduce the motor speed.
Correct answer
It results in poor efficiency due to high power loss.
When using a multimeter to measure current, which of the following is correct?
The multimeter is connected directly to the power source.
The multimeter is connected only across resistive components.
The multimeter is connected in parallel with the load.
The multimeter is connected in series with the load.
Correct answer
The multimeter is connected in series with the load.
What is the basic working principle of a DC generator?
Mutual induction
Lenz’s law
Faraday’s law of electromagnetic induction
Electrostatic induction
Correct answer
Faraday’s law of electromagnetic induction
In a balanced star-connected system, the neutral point __________.
carries current even in balanced loading conditions
is always at a voltage equal to any phase
is at a higher constant voltage relative to the ground
is at zero potential with respect to all phases
Correct answer
is at zero potential with respect to all phases
Where are Kit-Kat type fuses commonly used?
Power generation plants
Domestic and small industrial electrical circuits
Electronic circuits
High-voltage transmission systems
Correct answer
Domestic and small industrial electrical circuits
A three-phase AC circuit is connected with star connected balanced load of 100 Ω. If phase voltage of each phase is 200 V, the current in each phase will be ____.
0.5 A
4 A
2 A
1 A
Correct answer
2 A
Which of the following factors DOES NOT affect the rating of a fuse?
The cross-sectional area of the conductor
The type of electrical load
The ambient temperature
The colour of the fuse holder
Correct answer
The colour of the fuse holder
175 questions in the full paper