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Take this paper as a timed mock test. Review your answers after you submit.
Read the paper at your pace. Open an explanation when you need it.
A wire of a certain material having length L and cross-sectional area A has a resistance of 2 Ω. What will be the resistance of another wire of the same material having length 2L and cross-sectional area A/2?
2 \(\Omega \)
\(1\Omega \)
\(8\Omega \)
\(4\Omega \)
Correct answer
2 \(\Omega \)
In this question, statement I and statement II are given. These statements may be independent causes, effects of independent causes, or a common cause. One of these statements may be an effect of the other. Read both statements carefully and choose the correct answer.
I. The water level of the local river has reached its lowest level so far this summer, disrupting water supply to nearby towns.
II. Several power plants in the region have reported reduced power generation due to insufficient water for cooling processes.
Both I and II are independent causes.
II is the cause and I is its possible effect.
Both I and II are effects of independent causes.
I is the cause and II is its possible effect.
Correct answer
Both I and II are independent causes.
Identify the correct pair of Personal Protective Equipment (PPE) categories based on the nature of the hazard.
Non-respiratory: Safety goggles, Respiratory: Safety gloves
Non-respiratory: Nose mask, Respiratory: Safety boots
Non-respiratory: Safety helmet, Respiratory: Nose mask
Non-respiratory: Ear plugs, Respiratory: Safety shoes
Correct answer
Non-respiratory: Safety goggles, Respiratory: Safety gloves
Kaushik starts from point A and walks 32 m towards East. He turns right, walks 16 m and then turns right again, walks 14 m, reaches point B and stops. Chitra starts walking from point 2 which is 60 m east of point A. She walks 18 m north, turns right, walks 19 m, turns right and walks 65 m, turns right and walks 61 m and stops at point Y. What is the shortest distance between point B and point Y? (All turns are 90 degree turns only.)
33 m
29 m
31 m
25 m
Correct answer
33 m
Which of the following features is not available in Google Docs?
Comment on text
Insert images
Create tables
Track changes
Correct answer
Comment on text
Which of the following is an example of preventive maintenance?
Ignoring minor faults to save costs
Using equipment until failure occurs
Waiting for a machine to break down before repairing it
Conducting regular lubrication and inspections
Correct answer
Ignoring minor faults to save costs
Three of the following four letter-cluster pairs are alike in a certain way based on the English alphabetical order and thus form a group. Which of the following letter-cluster pairs does not belong to that group?
(Note: The mismatched letter-cluster pair is not based on the number of consonants/vowels or their position in the letter-cluster.)
WC-UL
MS-KB
DJ-BT
TZ-RI
Correct answer
WC-UL
Which of the following processes is mainly responsible for the loss of heat from a hot vessel?
Radiation
Conduction
Absorption
Convection
Correct answer
Radiation
If a force of 6 N is applied on a body, which is displaced 2m in the direction of force, then find the work done.
3 J
12 J
4 J
10 J
Correct answer
3 J
A class of 30 students took an exam, with the average score of 12 students being 68 and the average score of the rest being 70. What is the average score of the class?
67.2
69.2
70.2
68.2
Correct answer
67.2
Ohm's law for a given potential difference (V), current (I) and resistance (R) across a conductor is given as
I = VR
V = I − R
V = I + R
V = IR
Correct answer
I = VR
How does the thermal pollution of water affect the water quality?
Sediments get settled soon
Alters the colour of water
Increases pH of water
Oxygen level in water gets reduced
Correct answer
Sediments get settled soon
What is the typical range of wind speed (in m/s) required for the efficient operation of most commercial wind turbines?
12 - 25 m/s
0 - 2 m/s
5 - 15 m/s
3 - 5 m/s
Correct answer
12 - 25 m/s
If 46.4 : x :: x : 2.9, and x > 0, then find the value of x.
15.6
14.3
13.4
11.6
Correct answer
15.6
The areas of three adjacent faces of a solid cuboid are 190 cm², 285 cm², and 150 cm². Find the volume (in cm³) of the cuboid.
2850
2716
2896
3076
Correct answer
2850
A fruit vendor had some apples. He sold 40% of them and now has 840. How many apples did he originally have?
1400
1260
1800
2100
Correct answer
1400
How many fundamental units are there in the SI system?
14
10
5
7
Correct answer
14
What is recommended to be done before replacing a fuse?
Wear safety belt.
Wear rubber gloves.
to close the circuit.
Standing on a stool.
Correct answer
Wear safety belt.
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'.
If 'M × N − P % S + T', then how is M related to T?
wife's father's brother's son
wife's father's brother
wife's mother's brother's son
wife's mother's brother
Correct answer
wife's father's brother's son
Cooking utensils have metal bodies and plastic handles because _______
Both metal and plastic are good conductors of heat.
Metal is a good conductor of heat and plastic is a heat insulator.
Metal is a heat insulator and plastic is a good conductor of heat.
Both metal and plastic are heat insulators.
Correct answer
Both metal and plastic are good conductors of heat.
The list price of an article is ₹5,100 and a discount of 32% 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 ₹1,734?
49%
46%
50%
55%
Correct answer
49%
A bulb is connected to a 10 V battery for 20 seconds. If it draws a current of 2 A, calculate the heat energy generated by the bulb.
400 J
200 J
100 J
120 J
Correct answer
400 J
What is the primary purpose of information kiosks set up by the government?
To provide free food and beverages to citizens
To offer citizens easy access to information and services such as bill payments, registrations and public information
To allow citizens to participate in online gaming competitions
To enable government employees to monitor social media activities of citizens
Correct answer
To provide free food and beverages to citizens
Which of the following statements are true regarding general safety in the workshop?
Statement 1: Use any available tool for the job, even if it is not the correct one.
Statement 2: Keep the tools in their proper place after use.
Statement 3: Clean the machine while it is still running.
Statement 4: Replace worn-out or damaged tools immediately.
Statements 1 and 2 are true.
Statements 3 and 4 are true.
Statements 1 and 3 are true.
Statements 2 and 4 are true.
Correct answer
Statements 1 and 2 are true.
What is the proper way to handle misunderstandings in online conversations?
Publicly embarrassing the other person
Block that person immediately
Addressing misunderstandings politely and privately
Ignoring the conversation
Correct answer
Publicly embarrassing the other person
A man bought two varieties of apples at ₹4 per 5 apples and ₹4 per apple, respectively. If he bought an equal number of each variety of apples and then sold all the apples at ₹3 per apple, what would his profit percentage be?
2%
24%
25%
23%
Correct answer
2%
Simplify the following expression: \((x - y - z) ^ 2 - (x + y + z) ^ 2\)
−4x (y + z)
−4z (x + y)
−4y (x + z)
−4 (xy + yz + zx)
Correct answer
−4x (y + z)
What is the process of heat transfer in liquids?
Just conduction
Both conduction and radiation
Convection
Only radiation
Correct answer
Just conduction
In a rare coin collection, there was one gold coin for every five non-gold coins. Then, 18 more gold coins were added to the collection, after which the ratio of gold coins to nongold coins became 5 : 7. How many coins in all are now there in the collection?
55
45
75
60
Correct answer
55
A car leaves New Delhi and goes to Agra. The distance between the two cities is 300 km. Then the car returns to New Delhi. What is the total distance and displacement covered by the car? (Assume the car returns to the same destination and the route taken for both journeys is the same.)
The distance covered is 0 km and the displacement is 600 km.
The distance covered is 0 km and the displacement is 0 km.
The distance covered is 300 km and displacement is 0 km.
The distance covered is 600 km and displacement is 0 km.
Correct answer
The distance covered is 0 km and the displacement is 600 km.
Samir can complete a task in 6 days, while Tanveer can do it in 8. If Amir joins them, the three can complete the entire task in 3 days. If the total payment for the work is ₹2,400, how much will Aamir receive for his contribution?
₹300
₹250
₹430
₹340
Correct answer
₹300
A person saves 10% of his monthly income. If his monthly income increases by 30%, he saves 20% more than before. The percentage increase in his expenditure (rounded to two decimal places) is
31.11%
24.89%
40.44%
37.33%
Correct answer
31.11%
A, B, C, D, E, F and G are seated around a round table facing the center. G sits second to the left of E. B sits third to the right of A. C is the immediate neighbour of both E and B. D sits immediate left of G. How many people sit between E and F when counted from the right of E?
Three
Two
One
Four
Correct answer
Three
Refer to the following letter and symbol series and answer the question that follows. Counting to be done from left to right only.
(Left)^TJ#LROY#%SU$EKQ &*£B (Right)
How many such symbols are there, each of which is immediately preceded by a symbol and also immediately followed by a letter$?
Four
One
Two
Three
Correct answer
Four
In the following triplet, each group of letters is related to the next group following a certain logic. Select the option from the given options that follows the same logic.
GRAND-GRNAD-DNARG
INDEX–DEXIN–XDEIN
NIGHT–NGHIT–THGIN
FRUIT–FRIUT–TIURF
MINOR–MOINR–RNOIM
Correct answer
INDEX–DEXIN–XDEIN
A train travels from A to B at a speed of 40 km/hr and returns from B to A via the same route at a speed of 10 km/hr. Find the average speed (in km/hr) of the train during the two-way journey.
15
14
19
16
Correct answer
15
Find the largest four-digit number which, when divided by 21, 42, 147 and 105 leaves remainders 14, 35, 140 and 98 respectively.
8019
8813
8034
8816
Correct answer
8019
Statement I and Statement II are given below. These statements may be independent causes, effects of independent causes, or common causes. One statement may be an effect of the other. Read both statements carefully and choose the correct answer.
Statement:
The traffic police have issued a traffic advisory regarding traffic diversions for the next two days due to the closure of Raj Bhavan Road.
The Municipal Corporation plans to repair potholes on Raj Bhavan Road tomorrow.
II is the cause and I is its possible effect.
Both I and II are effects of independent causes.
Both I and II are independent causes.
I is the cause and II is its possible effect.
Correct answer
II is the cause and I is its possible effect.
The SI unit of luminous intensity is
Watt
Mol
Meter
Candela
Correct answer
Watt
Read the given statements and conclusions carefully. Assuming that the information given in the statements is true even if it seems to be at variance from commonly known facts, decide which of the given conclusions logically follow(s) from the given statements.
Statements:
Some cats are rats. All bats are tables. All rats are bats.
Conclusions:
(I): Some cats are bats.
(II): All bats are rats.
Only conclusion (II) follows.
Only conclusion (I) follows.
Neither conclusion (I) nor (II) follows.
Both conclusions (I) and (II) follow.
Correct answer
Only conclusion (II) follows.
What is the normal range of temperature for a healthy human body in Kelvin?
(301.15-323.15) K
(283.15-323.15) K
(308.15-315.15) K
(293.15-323.15) K
Correct answer
(301.15-323.15) K
What should come in place of question mark (?) in the given series?
197 112 189 129 181 146 173 163?
165
153
156
144
Correct answer
165
Study the following table and answer the given question.
| Number of mangoes sold on Monday | Number of mangoes sold on Tuesday | Wednesday | |
|---|---|---|---|
| Shop X | 58 | 19 | 25 |
| Shop Y | 42 | 34 | 30 |
If a mango was sold by shop Y for ₹80 on Tuesday, then how much amount did shop Y receive on Tuesday?
₹2,720
₹2,780
₹2,560
₹2,620
Correct answer
₹2,720
Which of the following options represents the equation of work done?
Work done = Force / Displacement
Work done = Force × Displacement
Work done = Force + Displacement
Work done = Force – Displacement
Correct answer
Work done = Force / Displacement
In which chemical process the R group of alcohol is replaced by R' group of ester to make biodiesel from vegetable oils?
Fermentation
Polymerisation
Distillation
Transesterification
Correct answer
Fermentation
The resistance of a wire is affected by which of the following factors?
Length and cross-sectional area of the wire only
Length, cross-sectional area and material of the wire
Wire material only
Wire length only
Correct answer
Length and cross-sectional area of the wire only
In \(\triangle PQR\), \(\angle Q=90^{\circ }\). If \(\tan R=\frac{1}{2}\), then find the value of \(\frac{\sec P(3\cos R-\sin P)}{4\csc R(4\sin R-\cos P)}\).
\(\frac{1}{3}\)
\(\frac{8}{7}\)
\(-\frac{8}{7}\)
\(-\frac{1}{3}\)
Correct answer
\(\frac{1}{3}\)
Which of the following letter-number cluster will come in place of the question mark (?) in the given series?
6S, 24T, 12V, 48Y, 24C, ?
60H
96I
96H
96G
Correct answer
60H
A cylindrical tank of diameter 14 m contains water up to the depth of 6 m. What is the total area of wetted surface? Use(π = 22/7).
414 \(m^2\)
418 \(m^2\)
416\(m^2\)
412 \(m^2\)
Correct answer
414 \(m^2\)
In a project involving the design of a pipeline for a building, which technical drawings would need to be referenced together?
Mechanical and Electrical
Civil and Electronics
Mechanical and Civil
Electrical and Electronics
Correct answer
Mechanical and Electrical
How many folds is/are required to fold an A2 size drawing sheet (420 mm × 594 mm), according to BIS SP: 46-2003?
1 fold
2 folds
4 folds
3 folds
Correct answer
1 fold
Which of the following is not a heat insulator?
Rubber
Silver
Plastic
Wool
Correct answer
Rubber
There are four partners in a business, A, B, C, and D. A's investment is two-thirds of D's. B and C invest equal amounts, and C's investment is half of D's. If they earn ₹137.6 lakh at the end of one year, find the total share (in lakhs) of A and B.
62.2
63.2
59.2
60.2
Correct answer
62.2
If the arithmetic mean of A and B is 70 and that of B and C is 110, then what will be the value of C-A?
80
90
60
70
Correct answer
80
In a certain code language, 'GIFT' is coded as '8264' and 'FEAR' is coded as '3527'. What is the code for 'F' in the given code language?
3
2
5
6
Correct answer
3
In the following number-pairs, the second number is obtained by performing certain mathematical operations on the first number. What number should replace X and Y so that the pattern followed by the two numbers on the left side of :: sign is the same as the pattern followed by the two numbers on the right side of :: sign?
(Note: Operations must be performed on whole numbers, without breaking the number into its component digits. Take 13 for example. Operations such as addition/subtraction/multiplication by 13 can be performed on 13. Breaking 13 into 1 and 3 and then performing mathematical operations on 1 and 3 is not allowed.)
X : 179 :: 22 : Y
X = 16, Y = 222
X = 15, Y = 223
X = 16, Y = 219
X = 18, Y = 219
Correct answer
X = 16, Y = 222
A, B, C, D, E, and F live on six different floors of the same building. The ground floor is numbered 1, the floor immediately above it is numbered 2, and so on until the topmost floor is numbered 6. F lives on an even-numbered floor, but not on floor number 6. The sum of the floors on which D and F live is 9. The sum of the floors on which F and B live is 5. E lives on the floor immediately below C. How many people live between D and E?
2
1
3
4
Correct answer
2
Which of the following correctly identifies the main components of a standard email structure?
Subject Line, Recipient Address, Message Body and Signature
Recipient Address, CC, BCC and Attachment
Header, Body, Footer and Encryption Key
Username, Password, Message Body and Signature
Correct answer
Subject Line, Recipient Address, Message Body and Signature
Automobile A travels a distance in 2 hours at a speed of 42 km/hr. Automobile B travels twice the distance traveled by A in 5 hours. Find the speed (in km/hr) of Automobile B.
31.2
34.2
36.3
33.6
Correct answer
31.2
Find the smallest number which when divided by 5, 6 and 7 leaves remainders 4, 5 and 6.
208
207
209
210
Correct answer
208
5 men or 9 women can do a piece of work in 9 days. 5 men work for 7 days and then leave. Find the number of women needed to complete the remaining work in 9 days.
4
2
1
5
Correct answer
4
Which of the following statements is correct?
The resistance increases as the length of the conductor increases.
The resistance decreases as the length of the conductor increases.
The resistance increases as the thickness of the conductor increases.
The resistance remains unchanged on increasing the length of the conductor.
Correct answer
The resistance increases as the length of the conductor increases.
The length of a rectangular sheet is 15.2 cm ± 0.1 cm and the width is 9.11 cm ± 0.1 * cm / 1, then what is the error in estimating the area of the rectangular sheet?
0.3 cm²
13 cm²
5 cm²
2 cm²
Correct answer
0.3 cm²
What is the most effective way to avoid mechanical hazards when operating large and dangerous machinery?
Appropriate training and experience
Regular machine maintenance only
Employee-only physical fitness training
Redesigning the machine to eliminate hazards
Correct answer
Appropriate training and experience
If the ball is thrown upwards, then the work done by the force of gravity on the ball is:
Negative
Independent of the displacement of the ball
Positive
Zero
Correct answer
Negative
Rita invests a certain sum of money at a certain rate of simple interest per annum, and the interest she receives is equal to one-fourth of the invested amount. If the time period of investment (in years) is equal to the rate of interest per annum, then for how many years did Rita invest the money?
4
6
5
7
Correct answer
4
Which of the following fundamental quantities are used to express any mechanical quantity?
Length, mass and time
Mass, time and force
Length, time and energy
Length, mass and speed
Correct answer
Length, mass and time
A product with an MRP of ₹1,590 is sold by a wholesaler for ₹835. Find the percentage discount offered (rounded off to the nearest integer).
46%
47%
45%
49%
Correct answer
46%
Find the value of 32 - 4 [ 4 + 5 ( 4 - 4 ( 6 - 2 ) + 4 ) - 18 ] ÷ 6.
60
56
68
58
Correct answer
60
The value of 60% of 45 is how much more than 4/5 of 25?
1
5
4
7
Correct answer
1
What is the first step in providing first aid for a minor burn?
Cover the burned area with a thick cloth
Pour cold water on the burned area
Burst any blisters that form
Apply butter to the burned area
Correct answer
Cover the burned area with a thick cloth
The resistivity of a conductor depends on ______.
Cross-sectional area
Matter
Length of conductor
Potential difference across the ends of the conductor
Correct answer
Cross-sectional area
Which ICT (Information and Communication Technology) service is commonly used for activities like railway reservation in e-governance?
Online payment gateway
Social media platform
Email Services
Web portal
Correct answer
Online payment gateway
Find the energy of a 5 kg object at a height of 8 m above the ground. Let the value of 'g' be 9.8 m s².
392 J
784 J
300 J
400 J
Correct answer
392 J
Three of the following four letter-clusters are alike in a certain way based on the English alphabetical order and hence form a group. Which letter-cluster does not belong to that group? (Note: The odd letter-cluster is not based on the number of consonants/vowels or their position.)
NQIL
BEWZ
RUNP
WZRU
Correct answer
NQIL
Which of the following statements is correct?
Laboratory thermometers are used to measure the temperature of the human body.
There is no method to convert temperature from one heat scale to another.
The normal human body temperature is 45°C.
The normal human body temperature is 98.6°F.
Correct answer
Laboratory thermometers are used to measure the temperature of the human body.
An 8 Ω resistor generates 200 J of heat per second. Find the potential difference across the resistor.
10 V
30 V
40 V
20 V
Correct answer
10 V
Which of the following is commonly used for the treatment of drinking water?
Acid neutralization
Chlorination
Incineration
Oil Filtration
Correct answer
Acid neutralization
In the following series, only one letter-cluster is wrong. Choose the wrong letter-cluster.
INK KPJ MRI OTH QWG SXF
MRI
QWG
SXF
OTH
Correct answer
MRI
If '+' and '-' are interchanged and '×' and '÷' are interchanged, then what will come in place of question mark (?) in the following equation?
9 ÷ 5 + 70 × 7 − 11 = ?
46
47
44
45
Correct answer
46
Neha swims in a pool that is 50 metres long. She covers 100 metres in 1 minute by swimming from one end of the pool to the other and back along the same straight path. Find her average velocity (in m/s).
3.2 m/s
1.7 m/s
2.5 m/s
0 m/s
Correct answer
3.2 m/s
Which of the following letter-clusters should be replaced by # and % so that the pattern and relation followed between the letter-cluster pair on the left side of :: sign is the same as the pattern and relation followed between the letter-cluster pair on the right side of :: sign?
Correct answer
Which of the following statements are true regarding electrical safety practices?
Neither statement 1 nor statement 2 is true.
Only statement 2 is true.
Both statement 1 and statement 2 are true.
Only statement 1 is true.
Correct answer
Neither statement 1 nor statement 2 is true.
The resistance of a uniform metallic conductor depends on its:
length only
length, area of cross-section, and nature of its material
melting point only
area of cross-section only
Correct answer
length only
The sum of _______ is mechanical energy.
Potential energy and kinetic energy
Electrical energy and light energy
Thermal energy and chemical energy
Chemical energy and electrical energy
Correct answer
Potential energy and kinetic energy
Refer to the following letter and symbol series and answer the question that follows.
Counting to be done from left to right only.
(Left) ^TJ#LROY#E%SU$KQ&*£B (Right)
How many such symbols are there each of which is immediately preceded by a letter and also immediately followed by another symbol$?
Four
Three
Two
One
Correct answer
Four
Select the option that is true regarding the following two statements labelled Assertion (A) and Reason (R).
Assertion (A): It is safe to work under a suspended load if you are in a hurry.
Reason (R): Never exceed the safe working load (SWL) of the equipment you are using.
Both (A) and (R) are true, and (R) is the correct explanation of (A).
Both (A) and (R) are true, but (R) is not the correct explanation of (A).
Assertion (A) is false, but Reason (R) is true
Assertion (A) is true, but Reason (R) is false.
Correct answer
Both (A) and (R) are true, and (R) is the correct explanation of (A).
What is a rheostat used for in an electrical circuit?
To change the resistance in a circuit
To measure current only
To measure voltage only
To measure both current and voltage
Correct answer
To change the resistance in a circuit
A, B, C, D, E, F, and G are seated around a round table facing the center. Only two people sit between G and C, when counted from the left of C. F sits third to the left of E. B sits to the immediate right of E. B sits second to the left of G. D is an immediate neighbor of F. How many people sit between A and C, when counted from the right of C?
4
2
3
1
Correct answer
4
In a certain code language, 'while you wait' is coded as 'ns bg sp' and 'why 1 wait now' is coded as 'kc rw bg'. How will 'wait' be coded in the given language?
ns
kc
bg
sp
Correct answer
ns
The dimension of surface tension is ______.
\( ML^2T ^{-2} \)
\( ML^0T ^{-2}\)
\( MLT ^{-2}\)
\(ML^0T\)
Correct answer
\( ML^2T ^{-2} \)
Find the kinetic energy of a body of mass 10 kg moving with a uniform velocity of \(5ms^{-1}\).
120 J
125 J
50 J
25 J
Correct answer
120 J
I, J, K, L, U, V and W each have their exam on a different day of the week, starting from Monday and ending on Sunday of the same week. Only two people have their exam before V. Only one person has an exam after L. Only three people have an exam between V and I. Only one person has an exam between J and K. W has an exam just before J. Who among the following has an exam on Friday?
W
U
I
V
Correct answer
W
What should come in place of question mark (?) in the given series?
67 106 88 127 109 148?
130
126
117
108
Correct answer
130
Which of the following materials serves as a heat insulator?
Aluminium
Silver
Plastic
Copper
Correct answer
Aluminium
Which of the following units is used to measure only basic physical quantities?
Derived unit
Basic unit
Neither basic nor derived units
Both basic and derived units
Correct answer
Derived unit
Which of the following terms describes the process of the gradual increase in the average temperature of the Earth's atmosphere, due to the greenhouse effect caused by increased levels of carbon dioxide, CFCs and other pollutants?
Acid rain
Global warming
Ozone depletion
Deforestation
Correct answer
Acid rain
Two sets of numbers are given below. In each set, performing certain mathematical operations on the first number gives the second number. Similarly, by performing certain mathematical operations on the second number, the third number is obtained and so on. Which of the given options follows the same set of operations as the given sets?
(Note: Operations must be performed on whole numbers, without breaking the number into its component digits. Take 13 for example. Operations such as addition/subtraction/multiplication by 13 can be performed on 13. Breaking 13 into 1 and 3 and then performing mathematical operations on 1 and 3 is not allowed.)
68-136-121-363;
29-58-43-129
35 – 70 – 55 – 165
42 – 84 – 74 – 222
13 – 26 – 46 – 138
73 – 146 – 114 – 228
Correct answer
35 – 70 – 55 – 165
The measures of two supplementary angles are in the ratio 3 : 7. Find the measure of the greater of the two angles.
180°
54°
144°
126°
Correct answer
180°
The sum of the ages of a grandfather, his son, and his grandson is 128 years. The grandfather is twice as old as his son, and the son is five times his grandson. Find the grandson's age (in years).
9
8
6
7
Correct answer
9
In India, when was the Hazardous Waste (Management and Handling) Rules implemented to regulate the disposal and processing of hazardous waste?
1987
2000
1989
1982
Correct answer
1987
A triple-riveted butt joint with two cover-straps is used for the ___________.
circumferential joint
radial joint
angle joint
longitudinal joint
Correct answer
circumferential joint
In screw gauge, the term 'lead of a screw' is defined by the:
material the screw is made of
number of threads on the screw
diameter of the screw
distance the screw moves axially with one complete turn
Correct answer
material the screw is made of
Which of the following factors influences the self-dressing ability of a honing stone?
Abrasive grain size and hardness
Workpiece surface roughness
Depth of cut per stroke
Honing tool reciprocating speed
Correct answer
Abrasive grain size and hardness
Which feature of a pipe wrench allows it to grip a round pipe securely?
Serrated jaws with adjustable hook
A built-in ratchet mechanism
Smooth jaws
Fixed jaws with a rubber grip
Correct answer
Serrated jaws with adjustable hook
Which of the following parts of a hammer-head is used for shaping and forming work like riveting and bending?
Face
Pein
Eyehole
Cheek
Correct answer
Face
What is the main reason copper turns green over time?
Hydrogen embrittlement
Absorption of nitrogen from the air
Reaction with UV light
Formation of an oxide layer
Correct answer
Hydrogen embrittlement
What is the primary advantage of rutile electrodes in welding?
They are suitable for welding high-carbon steels.
They provide good weld shape and easy slag removal.
They produce deep penetration for high-strength welding
They generate minimal heat during the welding process.
Correct answer
They are suitable for welding high-carbon steels.
An appliance operates at 240 V and consumes 480 W of electrical power. What is the current flowing through the appliance?
2 A
1.5 A
1 A
2.5 A
Correct answer
2 A
Which of the following is NOT a correct practice when using a telescopic gauge?
Measuring at multiple points for accuracy
Using a micrometer to measure the gauge’s expanded size
Measuring a rough or dirty bore without cleaning it
Locking the gauge before removing it from the bore
Correct answer
Measuring at multiple points for accuracy
The property of ________ is important, while repairing a machine, if a broken part is to be replaced, we need a new part. Only if the new part is made of accurately similar measurement, it can be fitted, otherwise not.
allowance
tolerance
interchangeability
interference
Correct answer
allowance
If the linear expansion coefficient of a material is \(2 \times 10^{-5}{}^\circ C^{-1}\) what does it mean?
When the temperature increases by \(1^\circ C\) , the material always increases by \(2 \times 10^{-5}\)
Per degree Celsius, the material expands in volume by \(2 \times 10^{-5}\) times its original volume.
Per degree Celsius, the material expands in length by \(2 \times 10^{-5}\) times its original length.
Per degree Celsius, the material expands in area by \(2 \times 10^{-5}\) times its original area.
Correct answer
When the temperature increases by \(1^\circ C\) , the material always increases by \(2 \times 10^{-5}\)
In industrial color coding, what does the red color usually indicate?
Neutral area
Safety equipment or emergency stop
Electrical grounding
Low-pressure pipes
Correct answer
Neutral area
Which of the following belts is acid proof and water proof and is NOT affected by animal oils or alkalies?
Balata belts
Rubber belts
Cotton or fabric belts
Leather belts
Correct answer
Balata belts
In which maintenance strategy is section inspection considered an important component?
Run-to-failure maintenance
Predictive maintenance - PdM
Preventive maintenance - PM
Corrective maintenance
Correct answer
Run-to-failure maintenance
In resistance soldering, how is heat generated?
By ultrasonic waves
By resistance to electrical current
By an electric arc
By direct flame
Correct answer
By ultrasonic waves
A body of mass 500 g is at rest. What force (approx.) is required to push it so that its final velocity becomes 20 m/s after covering a distance of 20 m? Assume there is no friction and take g = 10 m/s².
5 J
10 J
10 N
5 N
Correct answer
5 J
What is the chemical effect that occurs inside a lead acid battery during the charging process?
Water decomposes into hydrogen and oxygen.
Lead sulfate decomposes into lead and sulfuric acid.
Sulfuric acid decomposes into hydrogen and sulfate ions.
Lead reacts with acid and forms lead sulfate.
Correct answer
Water decomposes into hydrogen and oxygen.
How is the principle of hydraulic systems used in amusement parks?
By cooling mechanical components
By controlling air brakes in a swing ride
By lowering riders in drop towers and air-driven rides
By providing power to hydraulic roller coasters
Correct answer
By cooling mechanical components
Key way on a shaft is made with a _______ chisel
cross cut
round nose
flat
side cut
Correct answer
cross cut
In engineering drawing (lettering and numbering), a single stroke means that the _______________.
thickness of the line of the letter or number is obtained in two strokes of the pencil
thickness of the line of the letter or number is obtained in one stroke of the pencil
thickness of the line of the letter or number is obtained in no strokes of the pencil
thickness of the line of the letter or number is obtained in three strokes of the pencil
Correct answer
thickness of the line of the letter or number is obtained in two strokes of the pencil
What is the coating factor range for medium-coated electrodes?
1.6 to 2.2
1.1 to 1.2
1.25 to 1.3
1.4 to 1.5
Correct answer
1.6 to 2.2
Which of the following is a fundamental unit?
metre
newton
pascal
watt
Correct answer
metre
In the limit system, the distinction between allowance and deviation is:
allowance is used for single parts, while deviation is used for assemblies
allowance is the difference between the maximum material limits of the mating parts, while deviation is the difference between a size and the corresponding basic size
allowance is always positive, while deviation can be positive or negative
allowance is the difference between a size and the corresponding basic size, while deviation is the difference between the maximum material limits of the mating parts
Correct answer
allowance is used for single parts, while deviation is used for assemblies
Why should the blade of a bevel gauge be wiped clean after use?
To make it look new in appearance
To prevent rust and maintain accuracy
To make it a multipurpose tool/gauge
To ensure it remains flexible to use
Correct answer
To make it look new in appearance
What is the blade length of the T1 'T' square, as per IS:1360-1989?
1000 mm
500 mm
1500 mm
700 mm
Correct answer
1000 mm
The principle behind the vernier scale in a vernier caliper is:
dividing a known length into a certain number of equal divisions
adding the main scale and auxiliary scale readings
subtracting the vernier scale reading from the main scale reading
multiplying the main scale reading
Correct answer
dividing a known length into a certain number of equal divisions
Which of the following is the key difference between a fuse and a circuit breaker?
A fuse is used for high-voltage circuits, while a circuit breaker is used for low-voltage circuits.
A fuse is a one-time-use device, while a circuit breaker can be reset and reused.
A fuse can be reset after tripping, while a circuit breaker must be replaced.
A fuse is a mechanical device, while a circuit breaker is an electronic device.
Correct answer
A fuse is used for high-voltage circuits, while a circuit breaker is used for low-voltage circuits.
Which of the following statements is correct about a protractor?
Statements:
A protractor can be used to measure angles from both sides.
A protractor is typically made of a rigid metal material.
Both statements are true
Neither statement is true
Only statement 1 is true
Only statement 2 is true
Correct answer
Both statements are true
If the efficiency of a machine is 80%, what does it mean?
The machine gives more output than the input.
There is no loss of input energy in the machine.
Both the velocity ratio and the mechanical advantage of the machine are equal to 80.
There is a 20% loss of input energy in the machine.
Correct answer
The machine gives more output than the input.
When the size of a shaft is less and the size of the hole is more, the difference between the two is called _______.
interference
clearance
tolerance
deviation
Correct answer
interference
When the size of the hole or female part of a job is more than shaft or male part, the difference between the two will be known as ____________.
negative allowance
positive allowance
neither positive nor negative allowance
either positive or negative allowance
Correct answer
negative allowance
Match the correct length and width of the trimmed sizes of sheets.
| Designation | Trimmed size |
|---|---|
| A. AO | P. 297 x 420 |
| B. Al | Q. 420 x 594 |
| C.A2 | R. 594 x 841 |
| D. A3 | S. 841 x 1189 |
A - P, B - R, C - Q, D - S
A - S, B - R, C - P, D - Q
A - S, B - R, C - Q, D - P
A - R, B - S, C - Q, D - P
Correct answer
A - P, B - R, C - Q, D - S
Which of the following statements correctly describes the placement and purpose of orientation marks on a drawing sheet?
Orientation marks are placed at two opposite corners of the drawing sheet to indicate the correct orientation on the drawing board.
Orientation marks consist of arrow heads placed across the frame, with one at the shorter side and one at the longer side, coinciding with the centering marks.
One of the orientation marks always points towards the draughtsman, indicating the direction in which the drawing sheet should be placed.
Orientation marks are used to mark the midpoint of each side of the drawing sheet for accurate centering.
1 and 4 only
1, 2, and 4 only
1, 2, and 3 only
2 and 3 only
Correct answer
1 and 4 only
Identify the correct combination of a rivet parts.
Anvil, stock, top fuller
Bottom fuller, shank, horn
Hardie hole, chipping block, pritchel hole
Head, cylindrical body of shank, a slightly tapered tail
Correct answer
Anvil, stock, top fuller
A ______ chisel is used for making an oil groove in a bearing and for cutting slits at corners.
flat
round nose
side cut
cross cut
Correct answer
flat
Identify the type of thread shown below.
Acme thread
Knuckle thread
V-thread
Square thread
Correct answer
Acme thread
In multiple start threads, which of the following correctly represents the relationship between lead and pitch?
Lead equals the pitch.
Lead is greater than the pitch.
There is no relationship between them.
Lead is less than the pitch.
Correct answer
Lead equals the pitch.
Tapping is the operation of ________________.
cutting internal threads in a hole
sizing and improving the geometry and finish of a previously drilled hole
machining flat surfaces on work pieces
providing tapered entrance to the hole
Correct answer
cutting internal threads in a hole
What is the primary principle behind the generation of electrical energy in a piezoelectric device?
Conversion of chemical energy into electrical energy
Conversion of mechanical stress into electrical energy
Conversion of thermal energy into electrical energy
Conversion of light energy into electrical energy
Correct answer
Conversion of chemical energy into electrical energy
What is the effect of the heat treatment process 'annealing' on steel?
Softens the material and increases toughness
Produces martensite
Reduces ductility
Increases hardness and strength
Correct answer
Softens the material and increases toughness
Which of the following statements is/are correct?
Statement I - The annealing process uses heat to reduce the hardness and increase the ductility and toughness of various steels, cast iron, and alloys.
Statement II - Quenching is a rapid cooling process that alters specific properties of materials by manipulating the cooling rate.
Statement (I) and (II) both are incorrect
Statement (I) is correct but Statement (II) is incorrect.
Statement (I) and (II) both are correct.
Statement (I) is incorrect but Statement (II) is correct.
Correct answer
Statement (I) and (II) both are incorrect
In engineering drawing, what is defined as the path of a moving point with no thickness?
Line
Angle
Curve
Point
Correct answer
Line
Which of the following microstructural changes occurs during the tempering of martensite?
Ferrite transforms into pearlite.
Martensite transforms into pearlite.
Martensite decomposes into ferrite and cementite.
Austenite transforms into martensite.
Correct answer
Ferrite transforms into pearlite.
Identify the type of brazed joint shown below.
Simple Lap
Butted Flange
Strapped Lap
Joggle Lap
Correct answer
Simple Lap
Which tool can be used along with a radius gauge to check curvature of a workpiece for better accuracy?
Surface plate
Bevel protractor
Feeler gauge
Micrometer
Correct answer
Surface plate
Which punch mark among the following is used for precise positioning and safety of the dividing point?
Center punch mark of 30°
Center punch mark of 60°
Prick punch mark of 30°
Prick punch mark of 120°
Correct answer
Center punch mark of 30°
Which of the following is an example of a p-type semiconductor?
Silicon doped with phosphorus
Silicon doped with boron
Germanium doped with phosphorus
Silicon doped with arsenic
Correct answer
Silicon doped with phosphorus
What does an optical pyrometer measure?
Pressure of gases
Volume of liquids
Temperature of a surface
Relative density of liquids
Correct answer
Pressure of gases
Which of the following frosting techniques is best suited for large industrial components?
File finishing
Hand scraping
Sandblasting
Electrochemical frosting
Correct answer
File finishing
Which control valve is commonly used to control pressure in multiple actuators operating in sequence?
Pressure reducing valve
Check valve
Pressure sequence valve
Pressure relief valve
Correct answer
Pressure reducing valve
The included angle of the tip of a standard lathe centre is _____.
90°
60°
30°
45°
Correct answer
90°
Which of the following statements related to the use of wire gauge is incorrect?
It measures the diameter of a wire.
The use of an incorrect wire gauge may damage devices and electronic circuits.
It does not help in determining the current-carrying capacity of a wire.
It is used in electrical installations, wiring, and other applications.
Correct answer
It measures the diameter of a wire.
Which of the following types of wooden mallets are used for general purpose work such as flattening and bending?
Side-faked mallets
Standard wooden mallets
Bossing mallets
End-faked malles
Correct answer
Side-faked mallets
Which of the following is the Outer operation of the lathe?
Tapping
Facing
Drilling
Boring
Correct answer
Tapping
Which of the following is a key advantage of using Thyristors in power control applications?
Small size and low cost
Low voltage handling capabilities
High frequency switching
High efficiency and low power loss
Correct answer
Small size and low cost
Which of the following is an advantage of chain drives over belt drives?
The chain drive needs accurate mounting and careful maintenance, particularly lubrication and slack adjustment.
It gives a high transmission efficiency.
The chain drive has velocity fluctuations especially when unduly stretched.
The production cost of chains is relatively high.
Correct answer
The chain drive needs accurate mounting and careful maintenance, particularly lubrication and slack adjustment.
Which type of cooling method is used in the annealing process?
Air cooling
Furnace cooling
Water quenching
Oil quenching
Correct answer
Air cooling
Which of the following non-metals is naturally black?
Alumina
Silicon
Quartz
Graphite
Correct answer
Alumina
___________ is a metal removal process that employs an abrasive grinding wheel (GW) whose cutting elements are grains of abrasive materials of high hardness and high refractoriness.
Boring
Taper turning
Step turning
Grinding
Correct answer
Boring
What is the purpose of using a wiper die in rotary draw bending?
To cut the pipe after bending
To reduce wrinkling on the inner surface of the bend
To apply heat for easy bending
To measure the bending angle
Correct answer
To cut the pipe after bending
What does a green sign with a white cross indicate in a maintenance environment?
Prohibited area
Flammable materials storage
First aid station
High voltage zone
Correct answer
Prohibited area
Which of the following shafts is an example of a machine shaft?
Line shaft
Overhead shaft
Counter shaft
Crank shaft
Correct answer
Line shaft
Why is it important to follow proper disposal procedures for industrial waste?
To save time and effort in sorting waste
To reduce the number of trash bins needed
To comply with environmental regulations and reduce pollution
To allow waste to decompose anywhere
Correct answer
To save time and effort in sorting waste
The 'merit number' in toughness measurement is used for:
comparing different materials
determining a material’s density
measuring a material’s elasticity
finding the modulus of rigidity
Correct answer
comparing different materials
What type of abrasive is typically used for honing a hard material like ceramic?
Diamond
Copper tool
Steel wool
Sandpaper
Correct answer
Diamond
What is waste?
Valuable substances for agriculture
Useful materials for industries
Natural resources for living organisms
Unwanted or unusable materials
Correct answer
Valuable substances for agriculture
The digital interface of an electronic digital caliper improves the reliability of measurement records by:
providing secured storage for a series of readings
eliminating the need for manual data entry
allowing direct connection to a statistical control system
enabling the instrument to be used as a limit gauge
Correct answer
providing secured storage for a series of readings
________ are used to hold previously drilled or bored holes for outer surface machining.
Carriages
Lathe carriers
Rests
Lathe mandrels
Correct answer
Carriages
Which of the following types of wooden mallets are used for hollowing panel beatings?
End-faked mallets
Side-faked mallets
Standard wooden mallets
Bossing mallets
Correct answer
End-faked mallets
Which of the following punches is used to make deeper witness marks on scribed lines and make it easier for the drill to start correctly?
Solid punch
Prick punch
Pin punch
Centre punch
Correct answer
Solid punch
Pencils are rated in engineering drawings based on the _________________.
durability of the lead
colour of the lead
hardness or softness of the lead
shape of the lead
Correct answer
durability of the lead
What does the surface finish symbol shown in the given figure represent?
Material removal is strictly prohibited
The surface must be left without machining
The surface requires a specific finishing process
A general machining indication without roughness details
Correct answer
Material removal is strictly prohibited
When drawing a curved line of a specific length in an engineering drawing, which tool is most appropriate for ensuring accuracy?
Protractor
Compass
Straightedge
French Curve
Correct answer
Protractor
Which type of rotary actuator provides limited angular movement instead of continuous rotation?
Rack and pinion rotary actuator
Hydraulic motor
Vane motor
Pneumatic actuator
Correct answer
Rack and pinion rotary actuator
175 questions in the full paper