Official Paper

RRB JE ME 22 Apr 2025 Shift 2 CBT 2 Official Paper (Previous Year Paper)

150 questions · 120 minutes · with answers · free

Attempt as Timed Mock Test

General Abilities (50 questions)

1

The people of ___________ were famously involved in execution of the Chipko movement.

  1. ((a))

    Gujarat

  2. ((b))

    Delhi

  3. ((c))

    Garhwal Himalayas

  4. ((d))

    Assam

Show Answer
Answer: ((a))

Gujarat

2

Why do covalent compounds generally have low melting and boiling points?

  1. ((a))

    They contain metallic bonds. 

  2. ((b))

    They have strong electrostatic forces. 

  3. ((c))

    They have a rigid lattice structure.

  4. ((d))

    They have weak intermolecular forces.

Show Answer
Answer: ((a))

They contain metallic bonds. 

3

Which of the following elements has an atomic number of 8?

  1. ((a))

    Hydrogen

  2. ((b))

    Nitrogen

  3. ((c))

    Carbon

  4. ((d))

    Oxygen

Show Answer
Answer: ((a))

Hydrogen

4

In an aquatic ecosystem, the phenomenon of biomagnification can best be studied in the case of _________.

  1. ((a))

    phosphates

  2. ((b))

    chlorine

  3. ((c))

    organochlorine

  4. ((d))

    DDT

Show Answer
Answer: ((a))

phosphates

5

Which function key is used to move text or graphics in a document? 

  1. ((a))

    F2

  2. ((b))

    F1

  3. ((c))

    F12

  4. ((d))

    F5

Show Answer
Answer: ((a))

F2

6

A ball of mass 50 grams is moving with a velocity of 15 m/s. What is its kinetic energy?

  1. ((a))

    3.750 J

  2. ((b))

    1.875 J

  3. ((c))

    5.625 J

  4. ((d))

    7.500 J

Show Answer
Answer: ((a))

3.750 J

7

In January 2025, India launched the NVS-02 satellite to strengthen which of the following navigation systems?

  1. ((a))

    Galileo

  2. ((b))

    Global Positioning System (GPS) 

  3. ((c))

    Navigation with Indian Constellation (NavIC)

  4. ((d))

    Global Navigation Satellite System (GLONASS)

Show Answer
Answer: ((a))

Galileo

8

Which of the following options is NOT a greenhouse gas?

  1. ((a))

    Methane

  2. ((b))

    Carbon tetrachloride

  3. ((c))

    Nitrous oxide

  4. ((d))

    Carbon dioxide

Show Answer
Answer: ((a))

Methane

9

The main reason for which we are dependent on air is our _____.

  1. ((a))

    osmoregulation

  2. ((b))

    excretion

  3. ((c))

    digestion

  4. ((d))

    respiration 

Show Answer
Answer: ((a))

osmoregulation

10

Which of the following was NOT an artisan guild during the Mauryan period?

మౌర్య కాలంలో ఈ క్రింది వాటిలో ఏది కళాకారుల సంఘం (artisan guild) కాదు?

  1. ((a))

    Astrologer / జ్యోతిష్యుడు

  2. ((b))

    Potters / కుమ్మరులు

  3. ((c))

    Carpenters / వడ్రంగులు

  4. ((d))

    Bankers and Merchants / బ్యాంకర్లు మరియు వ్యాపారులు

Show Answer
Answer: ((a))

Astrologer / జ్యోతిష్యుడు

11

Who among the following referred to the Directive Principles as the 'life-giving provisions' of the Constitution of India?

  1. ((a))

    Ivor Jennings

  2. ((b))

    BR Ambedkar

  3. ((c))

    HM Seervai

  4. ((d))

    LM Singhvi

Show Answer
Answer: ((a))

Ivor Jennings

12

What is the primary function of a firewall tool in a computer network?

  1. ((a))

    To speed up internet connections

  2. ((b))

    To monitor and control incoming and outgoing network traffic

  3. ((c))

    To store data securely

  4. ((d))

    To detect and remove viruses

Show Answer
Answer: ((a))

To speed up internet connections

13

The President has the power to dissolve which house of Parliament? 

  1. ((a))

    Lok Sabha only 

  2. ((b))

    Legislative Assembly

  3. ((c))

    Both Rajya Sabha and Lok Sabha

  4. ((d))

    Rajya Sabha only

Show Answer
Answer: ((a))

Lok Sabha only 

14

Who among the following developed the notation system for Hindustani classical music?

  1. ((a))

    Pandit Ravi Shankar

  2. ((b))

    Pandit Vishnu Narayan Bhatkhande

  3. ((c))

    Ustad Bismillah Khan

  4. ((d))

    Ustad Amjad Ali Khan

Show Answer
Answer: ((a))

Pandit Ravi Shankar

15

Which of the following MS Excel functions is used to convert a numeric value into a text with a specific format?

  1. ((a))

    NUMBERTOTEXT()

  2. ((b))

    VALUE()

  3. ((c))

    FORMAT()

  4. ((d))

    TEXT()

Show Answer
Answer: ((a))

NUMBERTOTEXT()

16

In which of the following events did Deepthi Jeevanji set a world record at the 2024 World Para Athletics Championships? 

  1. ((a))

    400 metres T20

  2. ((b))

    200 metres T20

  3. ((c))

    100 metres T20

  4. ((d))

    600 metres T20

Show Answer
Answer: ((a))

400 metres T20

17

A solution is prepared by dissolving 40 g of NaCl in 200 g of water. What is the mass per cent of NaCl in the solution? 

  1. ((a))

    45%

  2. ((b))

    16.67%

  3. ((c))

    20%

  4. ((d))

    25%

Show Answer
Answer: ((a))

45%

18

For the protection and improvement of the environmental quality, the Environment Protection Act came into force in the year _________.

  1. ((a))

    1984

  2. ((b))

    1992

  3. ((c))

    1986

  4. ((d))

    1972

Show Answer
Answer: ((a))

1984

19

Who among the following Indian female cricketers won the Best International Cricketer Award (Women) at the BCCI Naman Awards 2025?

  1. ((a))

    Smriti Mandhana

  2. ((b))

    Mithali Raj 

  3. ((c))

    Harmanpreet Kaur

  4. ((d))

    Jhulan Goswami 

Show Answer
Answer: ((a))

Smriti Mandhana

20

A concave lens has a focal length of −2 cm. What is its power?

  1. ((a))

    25 D

  2. ((b))

    −50 D

  3. ((c))

    −0.5 D

  4. ((d))

    0.5 D

Show Answer
Answer: ((a))

25 D

21

What does LAN stand for?

  1. ((a))

    Local Area Network

  2. ((b))

    Large Area Network

  3. ((c))

    Limited Access Node

  4. ((d))

    Linked Access Network

Show Answer
Answer: ((a))

Local Area Network

22

Radiations that are emitted from nuclear wastes are known to cause ________ at a high rate.

  1. ((a))

    diseases

  2. ((b))

    emotional defects

  3. ((c))

    mutations

  4. ((d))

    syndromes

Show Answer
Answer: ((a))

diseases

23

Which country proposed the idea of holding a United Nations conference on human interactions with the environment in 1968?

  1. ((a))

    United States

  2. ((b))

    Canada

  3. ((c))

    France

  4. ((d))

    Sweden

Show Answer
Answer: ((a))

United States

24

Which formula should be entered in cell C2 to multiply the values of cells A2 and B2 in Excel?

  1. ((a))

    =A2+B2

  2. ((b))

    =MULTIPLY(A2,B2)

  3. ((c))

    =A2*B2

  4. ((d))

    =A2-B2

Show Answer
Answer: ((a))

=A2+B2

25

An object is placed 15 cm in front of a convex lens of focal length 25 cm. The image distance will be ______. 

  1. ((a))

    −37.5 cm

  2. ((b))

    −10.0 cm

  3. ((c))

    −9.37 cm

  4. ((d))

    17.5 cm

Show Answer
Answer: ((a))

−37.5 cm

26

Due to global warming, the temperature of the earth has increased by ________

  1. ((a))

    0.8°C

  2. ((b))

    0.7°C

  3. ((c))

    0.6°C 

  4. ((d))

    0.5°C

Show Answer
Answer: ((a))

0.8°C

27

An alloy is considered a homogeneous mixture because:

  1. ((a))

    it contains two or more phases

  2. ((b))

    it exhibits uniform composition throughout

  3. ((c))

    its components can be separated by filtration

  4. ((d))

    its components are chemically combined in fixed proportions 

Show Answer
Answer: ((a))

it contains two or more phases

28

Which of the following is NOT toxic to non-target organisms in the soil?

  1. ((a))

    Organic fertilisers

  2. ((b))

    Fungicides

  3. ((c))

    Herbicides 

  4. ((d))

    Pesticides

Show Answer
Answer: ((a))

Organic fertilisers

29

Which of the following bridges is constructed over the Brahmaputra River in India?

  1. ((a))

    Dhola-Sadiya Bridge

  2. ((b))

    Howrah Bridge

  3. ((c))

    Mahatma Gandhi Setu

  4. ((d))

    Pamban Bridge

Show Answer
Answer: ((a))

Dhola-Sadiya Bridge

30

Which German optical technology firm inaugurated its first Global Capability Centre in Bengaluru in November 2024, with plans to double its workforce within three years? 

  1. ((a))

    Jenoptik 

  2. ((b))

    Leica

  3. ((c))

    Schneider Kreuznach

  4. ((d))

    Carl Zeiss AG

Show Answer
Answer: ((a))

Jenoptik 

31

The kinetic energy of an object is derived using which of the following equations of motion?

  1. ((a))

    a = (v – u) / t

  2. ((b))

    s = ut + ½ at2

  3. ((c))

    v = u + at

  4. ((d))

    v2 – u2 = 2as

Show Answer
Answer: ((a))

a = (v – u) / t

32

What happens to the pH of pure water when a few drops of lemon juice are added?

  1. ((a))

    The pH increases 

  2. ((b))

    The pH remains the same

  3. ((c))

    The pH becomes neutral 

  4. ((d))

    The pH decreases 

Show Answer
Answer: ((a))

The pH increases 

33

Which of the following correctly differentiates mixtures and compounds?

FeatureMixtureCompound
A) SeparationCan be separated by physical methodsRequires chemical methods
B) CompositionFixed ratioVariable ratio
C) PropertiesAlways the same as constituentsDifferent from constituents
D) FormationBy chemical reactionBy simple mixing
  1. ((a))

    Option A (Separation) is correct 

  2. ((b))

    Option D (Formation) is correct

  3. ((c))

    Option B (Composition) is correct

  4. ((d))

    Option C (Properties) is correct 

Show Answer
Answer: ((a))

Option A (Separation) is correct 

34

What is the general orientation of the Himalayan ranges in the northwestern part of India?

  1. ((a))

    East-South

  2. ((b))

    Northeast to Southwest

  3. ((c))

    South-North

  4. ((d))

    Northwest to Southeast 

Show Answer
Answer: ((a))

East-South

35

What is the primary function of a computer firewall?

  1. ((a))

    To speed up internet connectivity

  2. ((b))

    To prevent unauthorised access to a private network

  3. ((c))

    To detect and remove computer viruses

  4. ((d))

    To store user passwords securely

Show Answer
Answer: ((a))

To speed up internet connectivity

36

Which operating system is known for its open-source nature and community-driven development for desktops and laptops?

  1. ((a))

    iOS

  2. ((b))

    macOS

  3. ((c))

    Windows

  4. ((d))

    Linux

Show Answer
Answer: ((a))

iOS

37

Which type of RAM is faster and DOES NOT require refreshing? 

  1. ((a))

    SRAM

  2. ((b))

    Dynamic Random Access Memory

  3. ((c))

    Flash Memory

  4. ((d))

    ROM

Show Answer
Answer: ((a))

SRAM

38

A sound wave with a low frequency will have _______.

  1. ((a))

    a low amplitude

  2. ((b))

    a short wavelength 

  3. ((c))

    a high pitch

  4. ((d))

    a low pitch

Show Answer
Answer: ((a))

a low amplitude

39

The power to issue an ordinance when Parliament is NOT in session is given to the President under which Article?

  1. ((a))

    Article 72

  2. ((b))

    Article 110

  3. ((c))

    Article 123

  4. ((d))

    Article 356

Show Answer
Answer: ((a))

Article 72

40

A metal wire is stretched, but it does not break easily. This property is known as:

  1. ((a))

    hardness

  2. ((b))

    ductility

  3. ((c))

    malleability

  4. ((d))

    brittleness

Show Answer
Answer: ((a))

hardness

41

The atomic mass of sulphur is 32 u, and sulphur exists as S₈ molecules. What is the molecular mass of sulphur? 

  1. ((a))

    256 u

  2. ((b))

    32 u

  3. ((c))

    64 u

  4. ((d))

    128 u

Show Answer
Answer: ((a))

256 u

42

Where can one find the option to change a PowerPoint template?

  1. ((a))

    View → Slide Master

  2. ((b))

    Insert → Themes

  3. ((c))

    Design → Themes

  4. ((d))

    Home → Layout 

Show Answer
Answer: ((a))

View → Slide Master

43

Who is known as the leader of the Green Revolution in India?

  1. ((a))

    C Subramaniam

  2. ((b))

    Prof. MS Swaminathan

  3. ((c))

    Dr. Rajendra Prasad

  4. ((d))

    Tribhuvandas Kishibhai Patel

Show Answer
Answer: ((a))

C Subramaniam

44

Which of the following is NOT a source of collection of municipal solid waste?

  1. ((a))

    Waste from homes

  2. ((b))

    Radioactive waste

  3. ((c))

    Waste from hospitals

  4. ((d))

    Waste from schools

Show Answer
Answer: ((a))

Waste from homes

45

Electricity production is categorised under which of the following economic sectors?

  1. ((a))

    Primary sector

  2. ((b))

    Secondary sector

  3. ((c))

    Tertiary sector

  4. ((d))

    Quaternary sector 

Show Answer
Answer: ((a))

Primary sector

46

Who among the following established the Bengal Chemical Swadeshi Stores?

  1. ((a))

    Dadabhai Naoroji

  2. ((b))

    Surendranath Banerjee

  3. ((c))

    BG Tilak

  4. ((d))

    Acharya PC Ray

Show Answer
Answer: ((a))

Dadabhai Naoroji

47

The wavelength of ultraviolet radiations which is most powerful and causes damage to the DNA is _____. 

  1. ((a))

    UV-C

  2. ((b))

    UV-B

  3. ((c))

    UV-D

  4. ((d))

    UV-A

Show Answer
Answer: ((a))

UV-C

48

What happens when you click on the 'Forward' button in an email?

  1. ((a))

    A blank email opens.

  2. ((b))

    The original message is copied into a new email draft. 

  3. ((c))

    The email is permanently deleted. 

  4. ((d))

    The email is automatically sent to all contacts. 

Show Answer
Answer: ((a))

A blank email opens.

49

Which of the following will increase the heat produced by a heating element?

  1. ((a))

    Using a material with high conductivity

  2. ((b))

    Decreasing the applied voltage

  3. ((c))

    Using a wire of lower resistance

  4. ((d))

    Increasing the current flowing through the wire 

Show Answer
Answer: ((a))

Using a material with high conductivity

50

A car moving at a constant speed of 123 km/hr along a straight road is an example of ________.

  1. ((a))

    uniform motion 

  2. ((b))

    rotational motion

  3. ((c))

    random motion

  4. ((d))

    non-uniform motion

Show Answer
Answer: ((a))

uniform motion 

Technical Abilities (100 questions)

51

Which of the following materials is likely to have the highest thermal conductivity?

  1. ((a))

    Rubber

  2. ((b))

    Air

  3. ((c))

    Aluminium

  4. ((d))

    Wood

Show Answer
Answer: ((a))

Rubber

52

Which characteristic best describes an axial flow pump?

  1. ((a))

    The fluid flows parallel to the pump shaft.

  2. ((b))

    The fluid flows radially outward from the shaft.

  3. ((c))

    The fluid flows perpendicular to the pump shaft.

  4. ((d))

    The fluid flow is converted to heat energy.

Show Answer
Answer: ((a))

The fluid flows parallel to the pump shaft.

53

Which of the following are used to improve pigment dispersion and the stability of coatings during organic coating?

  1. ((a))

    Colloidal stabilisers

  2. ((b))

    Pigment analyser

  3. ((c))

    Curing stabilisers

  4. ((d))

    Plasticisers

Show Answer
Answer: ((a))

Colloidal stabilisers

54

What is the primary function of the tool post in a lathe machine?

  1. ((a))

    To secure the workpiece firmly on the machine bed

  2. ((b))

    To control the feed rate and depth of cut during machining

  3. ((c))

    To hold and adjust the tool for a suitable working position

  4. ((d))

    To support the compound rest and provide rotational movement

Show Answer
Answer: ((a))

To secure the workpiece firmly on the machine bed

55

The S-N curve in fatigue testing shows the relationship between:

  1. ((a))

    the number of cycles and strain amplitude

  2. ((b))

    the number of cycles and stress amplitude

  3. ((c))

    stress and strain

  4. ((d))

    stress and displacement

Show Answer
Answer: ((a))

the number of cycles and strain amplitude

56

Slag inclusion is the welding defect caused by ___________________.

  1. ((a))

    gas being trapped, due to moisture

  2. ((b))

    insufficient cleaning and preparation of the base metal before welding commences

  3. ((c))

    contamination of either the filler or parent metals

  4. ((d))

    incorrect edge penetration

Show Answer
Answer: ((a))

gas being trapped, due to moisture

57

Tungsten Inert Gas Welding (TIG) is also called _______________.

  1. ((a))

    Metal Inert Gas Welding

  2. ((b))

    Gas Tungsten Arc Welding

  3. ((c))

    Gas Metal Arc Welding

  4. ((d))

    Thermo-compression Welding

Show Answer
Answer: ((a))

Metal Inert Gas Welding

58

Which of the following centre-less grinding can be preferred for headed, stepped, or taper-shaped workpieces?

  1. ((a))

    Plunge cut grinding

  2. ((b))

    Taper out grinding

  3. ((c))

    Rotation feed center-less grinding

  4. ((d))

    Out feed grinding

Show Answer
Answer: ((a))

Plunge cut grinding

59

Which statement best compares battery and magneto ignition systems in internal combustion engines?

  1. ((a))

    Magneto systems require more frequent maintenance than battery systems.

  2. ((b))

    Battery ignition systems are independent of engine speed, unlike magneto systems.

  3. ((c))

    Battery ignition systems rely on stored electrical energy, whereas magneto systems generate power on-demand via electromagnetic induction.

  4. ((d))

    Both systems depend on an external battery for operation.

Show Answer
Answer: ((a))

Magneto systems require more frequent maintenance than battery systems.

60

In brazing, the filler metal is drawn into the joint by means of _____.

  1. ((a))

    friction

  2. ((b))

    damping action

  3. ((c))

    capillary action

  4. ((d))

    surface tension

Show Answer
Answer: ((a))

friction

61

In Arc Welding Processes, GMAW stands for ______________________.

  1. ((a))

    Gas Metal Arc Welding

  2. ((b))

    Gas Molten Arbour Welding

  3. ((c))

    Gas Molten Arc Welding

  4. ((d))

    Gang Metal Arc Welding

Show Answer
Answer: ((a))

Gas Metal Arc Welding

62

Which type of light is generally used in the photo etching process?

  1. ((a))

    Infrared (IR) light

  2. ((b))

    X-ray

  3. ((c))

    Visible light

  4. ((d))

    Ultraviolet (UV) light

Show Answer
Answer: ((a))

Infrared (IR) light

63

How is the resultant force calculated if two forces act along the same straight line but in opposite directions?

  1. ((a))

    R=F1+F2

  2. ((b))

    R=F12+F22R=\sqrt{F_{1}^{2} + F_{2}^{2} }

  3. ((c))

    R=2F1F2cosθR=2F_1F_2cos\theta

  4. ((d))

    R=F1−F2R=F_1 - F_2

Show Answer
Answer: ((a))

R=F1+F2

64

The radius of gyration about the polar axis of a circular lamina of radius 0.2 m is:

  1. ((a))

    4.1 cm

  2. ((b))

    0.14 m

  3. ((c))

    0.1 m

  4. ((d))

    π cm

Show Answer
Answer: ((a))

4.1 cm

65

The intake valve closes at _____ for a low-speed engine and at _____ for high-speed four-stroke petrol engines.

  1. ((a))

    60 deg after BDC; 10 deg after BDC

  2. ((b))

    10 deg before BDC; 60 deg before BDC

  3. ((c))

    60 deg before BDC; 10 deg before BDC

  4. ((d))

    10 deg after BDC; 60 deg after BDC

Show Answer
Answer: ((a))

60 deg after BDC; 10 deg after BDC

66

If the external diameter of a hollow shaft is three times greater than its internal diameter, what is the ratio of its torque-carrying capacity compared to that of a solid shaft of identical material and the same outer diameter?

  1. ((a))

    65/81

  2. ((b))

    80/81

  3. ((c))

    26/27

  4. ((d))

    81/80

Show Answer
Answer: ((a))

65/81

67

In which type of engine is a mist lubricating system most commonly used?

  1. ((a))

    Gas turbine engines

  2. ((b))

    Rotary engines

  3. ((c))

    Four-stroke diesel engines

  4. ((d))

    Two-stroke petrol engines

Show Answer
Answer: ((a))

Gas turbine engines

68

Which of the following is a common metrological application of interferometry?

  1. ((a))

    Determining surface hardness

  2. ((b))

    Analysing chemical composition

  3. ((c))

    Measuring temperature

  4. ((d))

    Inspecting machine parts for straightness

Show Answer
Answer: ((a))

Determining surface hardness

69

What does specific fuel consumption (SFC) measure in an internal combustion engine?

  1. ((a))

    The efficiency of the engine’s exhaust system

  2. ((b))

    The total mass of the fuel used during engine operation

  3. ((c))

    The fuel efficiency expressed as the amount of fuel consumed per unit of power produced

  4. ((d))

    The ratio of air intake to fuel delivered per combustion cycle

Show Answer
Answer: ((a))

The efficiency of the engine’s exhaust system

70

The Zeroth Law of Thermodynamics establishes the basis for which of the following?

  1. ((a))

    Entropy increase in isolated systems

  2. ((b))

    Heat transfer through conduction

  3. ((c))

    Conservation of energy

  4. ((d))

    Measurement of temperature

Show Answer
Answer: ((a))

Entropy increase in isolated systems

71

A pump discharges water with a manometric head of 20 m. If the density of water is 1000 kg/m3 and gravity is 9.81 m/s2 , what is the approximate pressure increase provided by the pump?

  1. ((a))

    20 kPa

  2. ((b))

    2 kPa

  3. ((c))

    196 kPa

  4. ((d))

    9.81 kPa

Show Answer
Answer: ((a))

20 kPa

72

Broaching of outside surfaces is called _____.

  1. ((a))

    internal broaching

  2. ((b))

    hallow broaching

  3. ((c))

    surface broaching

  4. ((d))

    hole broaching

Show Answer
Answer: ((a))

internal broaching

73

How many mirrors are used for magnification in the Zeiss Ultra-Optimeter?

  1. ((a))

    One

  2. ((b))

    Two

  3. ((c))

    Three

  4. ((d))

    Four

Show Answer
Answer: ((a))

One

74

In most of the SI engines, the intake valve opens a few degrees before the TDC on the exhaust stroke to:

  1. ((a))

    allow for better scavenging of exhaust gases

  2. ((b))

    ensure that the intake valve is fully open when the piston reaches the TDC

  3. ((c))

    ensure complete combustion of the fuel-air mixture

  4. ((d))

    increase the engine's compression ratio

Show Answer
Answer: ((a))

allow for better scavenging of exhaust gases

75

Which of the following is NOT a function of the spirit level measuring instrument?

  1. ((a))

    For measuring surface roughness

  2. ((b))

    For determining flatness and straightness

  3. ((c))

    For measuring angles

  4. ((d))

    For measuring alignment of machine parts

Show Answer
Answer: ((a))

For measuring surface roughness

76

Electroplating is the opposite of which of the following?

  1. ((a))

    Electrolysis

  2. ((b))

    Battery charging

  3. ((c))

    Galvanic cell

  4. ((d))

    Fuel cell

Show Answer
Answer: ((a))

Electrolysis

77

The primary purpose of job rating or evaluation is to:

  1. ((a))

    provide benefits like leave and housing

  2. ((b))

    assess an employee's performance

  3. ((c))

    motivate employees for higher production

  4. ((d))

    determine the relative worth of different jobs

Show Answer
Answer: ((a))

provide benefits like leave and housing

78

What is the primary function of the tailstock in a lathe?

  1. ((a))

    To change the direction of the spindle movement

  2. ((b))

    To provide support and bearing for the rotating job

  3. ((c))

    To hold the cutting tool for machining operations

  4. ((d))

    To control the speed of the spindle rotation

Show Answer
Answer: ((a))

To change the direction of the spindle movement

79

A pitot tube is primarily used to measure:

  1. ((a))

    dynamic pressure

  2. ((b))

    static pressure

  3. ((c))

    atmospheric pressure

  4. ((d))

    flow velocity

Show Answer
Answer: ((a))

dynamic pressure

80

In rack and pinion gear, the rack is a _____ and the pinion is a _____.

  1. ((a))

    straight line gear; straight line gear

  2. ((b))

    straight line gear; circular wheel

  3. ((c))

    circular wheel; straight line gear

  4. ((d))

    circular wheel; circular wheel

Show Answer
Answer: ((a))

straight line gear; straight line gear

81

Which of the following is a special case of a spirit-level device?

  1. ((a))

    Micrometer

  2. ((b))

    Clinometer

  3. ((c))

    Autocollimator

  4. ((d))

    Kelvinometer

Show Answer
Answer: ((a))

Micrometer

82

Angle gauges are generally made from which material?

  1. ((a))

    Carbon fibre

  2. ((b))

    Hardened steel

  3. ((c))

    Wood

  4. ((d))

    Plastic

Show Answer
Answer: ((a))

Carbon fibre

83

In which type of oxy-acetylene welding flames are both acetylene and oxygen in equal proportions?

  1. ((a))

    Neutral welding flame

  2. ((b))

    Oxidising welding flame

  3. ((c))

    Reducing welding flame

  4. ((d))

    Carburising welding flame

Show Answer
Answer: ((a))

Neutral welding flame

84

Which of the following types of steel would NOT typically undergo the normalising process?

  1. ((a))

    High-carbon steel

  2. ((b))

    Alloy steel

  3. ((c))

    Medium-carbon steel

  4. ((d))

    Stainless steel

Show Answer
Answer: ((a))

High-carbon steel

85

Which of the following beams is classified as a statically determinate beam?

  1. ((a))

    Propped cantilever beam

  2. ((b))

    Continuous beam

  3. ((c))

    Overhanging beam

  4. ((d))

    Fixed beam

Show Answer
Answer: ((a))

Propped cantilever beam

86

A grey body is defined as a body that:

  1. ((a))

    absorbs all radiation incident upon its surface

  2. ((b))

    reflects all radiation incident upon its surface

  3. ((c))

    has emissivity less than 1 but constant for all wavelengths

  4. ((d))

    has an emissivity that varies with wavelength of radiation

Show Answer
Answer: ((a))

absorbs all radiation incident upon its surface

87

Fluid pressure is defined as:

  1. ((a))

    the force per unit area exerted by a fluid at rest

  2. ((b))

    the force acting parallel to a surface

  3. ((c))

    the weight of a fluid per unit volume

  4. ((d))

    the rate of the flow of fluid through a given area

Show Answer
Answer: ((a))

the force per unit area exerted by a fluid at rest

88

What is the function of coolants in metal cutting or machining operation?

  1. ((a))

    Decreases adhesion between chip and tool

  2. ((b))

    Provides higher friction and wear between tool and workpiece

  3. ((c))

    Increases wear and tear of tools and decrease tool life

  4. ((d))

    Reduces machinability and machining forces

Show Answer
Answer: ((a))

Decreases adhesion between chip and tool

89

If elastic strength increases 3 times, then Proof Resilience:

  1. ((a))

    increases 3 times

  2. ((b))

    decreases 9 times

  3. ((c))

    decreases 3 times

  4. ((d))

    increases 9 times

Show Answer
Answer: ((a))

increases 3 times

90

In a two-stroke petrol engine, the primary function of the crankcase is to:

  1. ((a))

    house the transfer port

  2. ((b))

    store lubricating oil

  3. ((c))

    cool the engine

  4. ((d))

    act as a primary pumping chamber for the air-fuel mixture

Show Answer
Answer: ((a))

house the transfer port

91

If a component has a Factor of Safety (FoS) of 1.0, what does it indicate?

  1. ((a))

    The design is highly conservative.

  2. ((b))

    The component will never fail irrespective of any load.

  3. ((c))

    The design is unsafe and should not be designed.

  4. ((d))

    The material will fail exactly at the expected load.

Show Answer
Answer: ((a))

The design is highly conservative.

92

What will be the shape of the bending moment diagram for a cantilever beam carrying a uniformly distributed load throughout its length?

  1. ((a))

    Cubical

  2. ((b))

    A straight line

  3. ((c))

    A parabola

  4. ((d))

    A hyperbola

Show Answer
Answer: ((a))

Cubical

93

The primary reason for diesel engines having more efficiency than gasoline engines is they _______________.

  1. ((a))

    have a longer stroke

  2. ((b))

    have a higher compression ratio

  3. ((c))

    use a different fuel

  4. ((d))

    operate at higher temperatures

Show Answer
Answer: ((a))

have a longer stroke

94

Which type of fracture is most likely to occur in a material with high tensile strength but low ductility?

  1. ((a))

    Fatigue failure

  2. ((b))

    Ductile fracture

  3. ((c))

    Creep failure

  4. ((d))

    Brittle fracture

Show Answer
Answer: ((a))

Fatigue failure

95

In the _____________ welding technique, the welding rod is applied before the welding torch in the direction of motion.

  1. ((a))

    forehand

  2. ((b))

    backhand

  3. ((c))

    laser

  4. ((d))

    electric arc

Show Answer
Answer: ((a))

forehand

96

In climb milling, metal is removed by the cutter rotating in the _____.

  1. ((a))

    opposite direction of the feed of the workpiece

  2. ((b))

    perpendicular direction of the feed of the workpiece

  3. ((c))

    same direction of the feed of the workpiece

  4. ((d))

    diagonal direction of the feed of the workpiece

Show Answer
Answer: ((a))

opposite direction of the feed of the workpiece

97

Identify the critical path from the given diagram.

  1. ((a))

    1-2-3-7

  2. ((b))

    1-2-4-5-6-7

  3. ((c))

    1-2-4-5-6

  4. ((d))

    1-2-4-7

Show Answer
Answer: ((a))

1-2-3-7

98

Which of the following elements provides the necessary horizontal force to the workpiece in centerless grinding?

  1. ((a))

    Regulating wheel

  2. ((b))

    Stationary wheel

  3. ((c))

    Work test blade

  4. ((d))

    Revolving wheel

Show Answer
Answer: ((a))

Regulating wheel

99

In the CPM technique, the critical path slack is:

  1. ((a))

    zero

  2. ((b))

    negative

  3. ((c))

    either negative or zero

  4. ((d))

    positive

Show Answer
Answer: ((a))

zero

100

If the temperature of a black body doubles, how many times will its emissive power increase?

  1. ((a))

    8 times

  2. ((b))

    4 times

  3. ((c))

    16 times

  4. ((d))

    2 times

Show Answer
Answer: ((a))

8 times

101

Frictional power in an engine is calculated as:

  1. ((a))

    Indicated power − Brake power

  2. ((b))

    Brake power / Mechanical efficiency

  3. ((c))

    Indicated power + Brake power

  4. ((d))

    Indicated power × Mechanical efficiency

Show Answer
Answer: ((a))

Indicated power − Brake power

102

In carburising welding flame, there is a supply of _______ in the combustible mixture.

  1. ((a))

    limited acetylene proportion and more oxygen proportion

  2. ((b))

    acetylene and oxygen in equal proportion

  3. ((c))

    more acetylene proportion and limited oxygen proportion

  4. ((d))

    only oxygen

Show Answer
Answer: ((a))

limited acetylene proportion and more oxygen proportion

103

_______________ type of electrode is used in Gas Tungsten Arc Welding (GTAW).

  1. ((a))

    Non-consumable tungsten

  2. ((b))

    Consumable bare

  3. ((c))

    Consumable coated

  4. ((d))

    Non-consumable carbon

Show Answer
Answer: ((a))

Non-consumable tungsten

104

Which alloying element in alloy steel is primarily responsible for enhancing corrosion resistance?

  1. ((a))

    Chromium

  2. ((b))

    Manganese

  3. ((c))

    Silicon

  4. ((d))

    Carbon

Show Answer
Answer: ((a))

Chromium

105

The type of lasers commonly used in laser interferometers for metrology applications are _____.

  1. ((a))

    solid-state lasers

  2. ((b))

    dye lasers

  3. ((c))

    gas lasers

  4. ((d))

    excimer lasers

Show Answer
Answer: ((a))

solid-state lasers

106

In Carbon Arc Welding, DCSP stands for _____________________.

  1. ((a))

    Direct current straight porosity

  2. ((b))

    Direct current straight pressure

  3. ((c))

    Direct current straight polarity

  4. ((d))

    Dual current straight polarity

Show Answer
Answer: ((a))

Direct current straight porosity

107

In Arc Welding process, chipping hammer is used to __________________.

  1. ((a))

    clean the surface to be welded

  2. ((b))

    remove the slag by striking

  3. ((c))

    protect the eyes

  4. ((d))

    hold the electrode manually and conducting current to it

Show Answer
Answer: ((a))

clean the surface to be welded

108

How does atmospheric pressure influence gauge pressure measurements?

  1. ((a))

    Gauge pressure is independent of atmospheric pressure.

  2. ((b))

    Gauge pressure equals atmospheric pressure minus absolute pressure.

  3. ((c))

    Gauge pressure is the difference between absolute pressure and atmospheric pressure.

  4. ((d))

    Gauge pressure is the sum of absolute and atmospheric pressure.

Show Answer
Answer: ((a))

Gauge pressure is independent of atmospheric pressure.

109

What is the full form of ‘CBN’, which is used as an abrasive in grinding processes?

  1. ((a))

    Calcium bi nitrous

  2. ((b))

    Carbon boron nitrate

  3. ((c))

    Copper boron nitride

  4. ((d))

    Cubic boron nitride

Show Answer
Answer: ((a))

Calcium bi nitrous

110

Drill chuck is the major part of drilling machines, which _____.

  1. ((a))

    transmits rotary motion to the drill spindle at a number of speeds

  2. ((b))

    rests on the base and supports the head and the table

  3. ((c))

    holds the drill bit

  4. ((d))

    holds electric motor, V-pulleys and V-belt

Show Answer
Answer: ((a))

transmits rotary motion to the drill spindle at a number of speeds

111

While measuring surface texture, the part of the profilometer that makes contact with the workpiece surface is:

  1. ((a))

    an electrical pickup

  2. ((b))

    a finely pointed stylus

  3. ((c))

    a motorised mechanism

  4. ((d))

    a recording unit

Show Answer
Answer: ((a))

an electrical pickup

112

What is a characteristic of a coplanar parallel force system?

  1. ((a))

    Forces act in different planes and are parallel.

  2. ((b))

    Forces act in the same plane but are not parallel.

  3. ((c))

    Forces act in different planes and are not parallel.

  4. ((d))

    Forces act in the same plane and are parallel.

Show Answer
Answer: ((a))

Forces act in different planes and are parallel.

113

Which of the following factors generally increases the brittleness of a material?

  1. ((a))

    High alloy content

  2. ((b))

    Low temperature

  3. ((c))

    High temperature

  4. ((d))

    High strain rate

Show Answer
Answer: ((a))

High alloy content

114

A simply supported beam with a span length of 5 m carries a moment of 20 N-m (counterclockwise direction) at the middle of the beam. What will the value of reactions be at both the ends of the beam?

  1. ((a))

    4 N, −4 N

  2. ((b))

    8 N, −8 N

  3. ((c))

    5 N, −5 N

  4. ((d))

    N, −2 N

Show Answer
Answer: ((a))

4 N, −4 N

115

Why does stainless steel resist rusting, while regular carbon steel does not?

  1. ((a))

    Stainless steel has a thicker iron content.

  2. ((b))

    Stainless steel has a protective chromium oxide layer that prevent rusting.

  3. ((c))

    Stainless steel has higher carbon content which makes it corrosion resistant.

  4. ((d))

    Stainless steel is coated with a special anti-rust chemical.

Show Answer
Answer: ((a))

Stainless steel has a thicker iron content.

116

A beam with a symmetrical T section has a top flange 50 mm wide and 20 mm thick, and a web 40 mm high and 10 mm thick. An additional plate, 10 mm thick and 60 mm wide, is welded above the flange. The moment of inertia of this symmetrical planar cross- section about an axis in its plane normal to the web and in line with the upper face of the 10 mm thick plate works out to 1506,666.66 mm4. The centroidal axis of the combined area is 21.5 mm below this axis, normal to the web. The moment of inertia of this built-up area about the centroidal axis is (in mm4):

  1. ((a))

    2,17,833.34

  2. ((b))

    70,077.52

  3. ((c))

    5,82,166.66

  4. ((d))

    1.33 × 105

Show Answer
Answer: ((a))

2,17,833.34

117

In which of the following situations would brittleness be most UNDESIRABLE?

  1. ((a))

    In materials used in high-speed applications

  2. ((b))

    In tools that need to withstand heavy impact

  3. ((c))

    In structural beams under static load

  4. ((d))

    In materials exposed to high temperatures

Show Answer
Answer: ((a))

In materials used in high-speed applications

118

When two equal forces F act at an angle θ, the resultant force is given by which of the following expressions?

  1. ((a))

    R=2Fsin(θ2)R=2Fsin(\frac{\theta}{2})

  2. ((b))

    R=F1+F2R=F_1+F_2

  3. ((c))

    R=F1−F2R=F_1-F_2

  4. ((d))

    R=2Fcos(θ2)R=2Fcos(\frac{\theta}{2})

Show Answer
Answer: ((a))

R=2Fsin(θ2)R=2Fsin(\frac{\theta}{2})

119

A symmetrical I-section has a moment of inertia about the centroidal axis in its plane perpendicular to the web, of 22.34 × 104 mm4. The moment of inertia of the full rectangular area occupied by the I-beam cross section about this axis is 65 × 104 mm4.

The two empty spaces on either side of the web are square. What is the height of the web?

  1. ((a))

    50 mm 

  2. ((b))

    30 mm

  3. ((c))

    55 mm 

  4. ((d))

    40 mm

Show Answer
Answer: ((a))

50 mm 

120

_____ is a welding defect caused by trapping of gas during the welding process.

  1. ((a))

    Undercut

  2. ((b))

    Burn through

  3. ((c))

    Cracking

  4. ((d))

    Porosity

Show Answer
Answer: ((a))

Undercut

121

Which of the following is a benefit of using Material Requirements Planning (MRP)?

  1. ((a))

    Reduced customer service and satisfaction

  2. ((b))

    Increased raw material costs

  3. ((c))

    Better inventory planning and scheduling

  4. ((d))

    Slower response to market changes

Show Answer
Answer: ((a))

Reduced customer service and satisfaction

122

According to Maslow's Hierarchy of Needs, the basic requirements of the human body such as food, water, sleep, etc. are categorised into:

  1. ((a))

    physiological needs

  2. ((b))

    esteem needs

  3. ((c))

    self-actualisation needs

  4. ((d))

    social needs

Show Answer
Answer: ((a))

physiological needs

123

Compared to axial flow pumps, radial flow pumps typically:

  1. ((a))

    generate higher pressures with lower flow rates

  2. ((b))

    are used exclusively for pumping gases

  3. ((c))

    have lower efficiency in all applications

  4. ((d))

    produce higher flow rates at lower pressures

Show Answer
Answer: ((a))

generate higher pressures with lower flow rates

124

An engine is assumed to be working on ideal Otto cycle with the temperatures at the beginning and end of compression as 27 °C and 327 °C. The air-standard efficiency of the engine is:

  1. ((a))

    87%

  2. ((b))

    78%

  3. ((c))

    60%

  4. ((d))

    50%

Show Answer
Answer: ((a))

87%

125

Manometric head is defined as:

  1. ((a))

    the height of a fluid column corresponding to the pump’s output pressure

  2. ((b))

    the weight of the pump

  3. ((c))

    the temperature difference across the pump

  4. ((d))

    the fluid velocity within the pump

Show Answer
Answer: ((a))

the height of a fluid column corresponding to the pump’s output pressure

126

Which of the following material has the highest compressive strength?

  1. ((a))

    Copper

  2. ((b))

    Mild Steel

  3. ((c))

    Rubber

  4. ((d))

    Cast Iron

Show Answer
Answer: ((a))

Copper

127

Which of the following represents the polar modulus of the hollow shaft?

[ If Do = External diameter and Di = Internal diameter ]

  1. ((a))

    [ 16π/Do ] [ Do4−Di4{Do}^4 - {Di}^4 ]

  2. ((b))

    [ π/16Do ] [ Do3−Di3{Do}^3 - {Di}^3 ]

  3. ((c))

    [ π/16Do ] [ Do4−Di4{Do}^4 - {Di}^4 ]

  4. ((d))

    [ 16/πDo ] [ Do4−Di4{Do}^4 - {Di}^4 ]

Show Answer
Answer: ((a))

[ 16π/Do ] [ Do4−Di4{Do}^4 - {Di}^4 ]

128

While scheduling decisions, the most influencing parameter is:

  1. ((a))

    market research

  2. ((b))

    sales forecasting

  3. ((c))

    competitor pricing

  4. ((d))

    availability of skilled personnel

Show Answer
Answer: ((a))

market research

129

In an ideal four-stroke petrol engine, the assumption made about the burning process during the power stroke i.e. after compression is:

  1. ((a))

    It occurs instantaneously when the piston is at the top dead centre.

  2. ((b))

    It starts at the bottom dead centre and continues as the piston moves up.

  3. ((c))

    It is a gradual process that starts before the piston reaches top dead centre.

  4. ((d))

    It takes a significant amount of time.

Show Answer
Answer: ((a))

It occurs instantaneously when the piston is at the top dead centre.

130

In the Charpy impact test, the specimen is typically:

  1. ((a))

    a cylindrical rod with no defects

  2. ((b))

    a rectangular bar with a notch in the middle

  3. ((c))

    a sheet of material placed under compression

  4. ((d))

    subjected to a gradual tensile load

Show Answer
Answer: ((a))

a cylindrical rod with no defects

131

A steel bar (E = 200E = 200, α = 12 × 10 − 6/°C) expands by 0.3 mm due to  a temperature increase. If the original length of the bar was 15 cm, what was the temperature rise?

  1. ((a))

    166.6°C

  2. ((b))

    100°C

  3. ((c))

    180°C

  4. ((d))

    120.6°C

Show Answer
Answer: ((a))

166.6°C

132

What is the capability of a profilometer instrument?

  1. ((a))

    Measure surface waviness only

  2. ((b))

    Measure surface roughness only

  3. ((c))

    Measure surface flaws only

  4. ((d))

    Measure roughness together with waviness and any other surface flaws

Show Answer
Answer: ((a))

Measure surface waviness only

133

What will be the nature of longitudinal stress in a thin closed cylinder containing hydrostatic fluid pressure?

  1. ((a))

    Bending

  2. ((b))

    Shear

  3. ((c))

    Compressive

  4. ((d))

    Tensile

Show Answer
Answer: ((a))

Bending

134

Which of the following happens when two equal and opposite forces are applied at a point on a rigid body?

  1. ((a))

    They produce an additional force on the body.

  2. ((b))

    They create rotational motion in the body.

  3. ((c))

    They cancel each other and have no effect.

  4. ((d))

    They change the magnitude of the original force.

Show Answer
Answer: ((a))

They produce an additional force on the body.

135

One challenge associated with double volute casings is:

  1. ((a))

    increased complexity in manufacturing and alignment

  2. ((b))

    higher risk of leakage due to multiple seams

  3. ((c))

    decreased efficiency in converting kinetic to pressure energy

  4. ((d))

    reduced flow rates

Show Answer
Answer: ((a))

increased complexity in manufacturing and alignment

136

To machine an internal hole in a broaching operation, the broach is gripped by the _____.

  1. ((a))

    puller at the pilot

  2. ((b))

    puller at the face of the teeth

  3. ((c))

    puller at the flute

  4. ((d))

    puller at the shank end

Show Answer
Answer: ((a))

puller at the pilot

137

Which of the following is the surface coating process?

  1. ((a))

    Tumbling

  2. ((b))

    Hot doping

  3. ((c))

    Hot dipping

  4. ((d))

    Pickling

Show Answer
Answer: ((a))

Tumbling

138

Which of the following is a limitation of taper turning by swiveling the compound rest?

  1. ((a))

    It ensures the best surface finish.

  2. ((b))

    It is suitable only for short tapers.

  3. ((c))

    It provides high production efficiency.

  4. ((d))

    It cannot turn any type of taper.

Show Answer
Answer: ((a))

It ensures the best surface finish.

139

What is the designated function of a 'planetary internal grinder machine'?

  1. ((a))

    For a work piece of irregular shape

  2. ((b))

    For a very small work piece

  3. ((c))

    For a work piece of regular shape

  4. ((d))

    For low precision surface finishes

Show Answer
Answer: ((a))

For a work piece of irregular shape

140

Which of the following processes produces the minimum surface roughness on workpieces?

  1. ((a))

    Honing

  2. ((b))

    Superfinishing

  3. ((c))

    Grinding

  4. ((d))

    Lapping

Show Answer
Answer: ((a))

Honing

141

How does the volute shape in a single volute pump casing affect performance?

  1. ((a))

    It helps maintain a uniform flow distribution.

  2. ((b))

    It increases turbulence within the pump.

  3. ((c))

    It restricts the pump’s operating range.

  4. ((d))

    It serves only an aesthetic purpose.

Show Answer
Answer: ((a))

It helps maintain a uniform flow distribution.

142

The factor considered for wage determination in the flat day rate basic wage incentive plan is:

  1. ((a))

    individual performance

  2. ((b))

    number of pieces produced

  3. ((c))

    company profit

  4. ((d))

    hours worked

Show Answer
Answer: ((a))

individual performance

143

Which of the following is an operational function that comes under pre planning?

  1. ((a))

    Dispatching

  2. ((b))

    Material planning and control

  3. ((c))

    Loading

  4. ((d))

    Forecasting

Show Answer
Answer: ((a))

Dispatching

144

The master production schedule represents the:

  1. ((a))

    starting time of component manufacturing

  2. ((b))

    financial requirements for the production

  3. ((c))

    starting and finishing time of different products

  4. ((d))

    finishing time of component manufacturing

Show Answer
Answer: ((a))

starting time of component manufacturing

145

Priming of a pump refers to:

  1. ((a))

    removing air from the pump casing and suction line

  2. ((b))

    lubricating the pump bearings

  3. ((c))

    increasing the rotational speed of the pump

  4. ((d))

    adjusting the impeller clearance

Show Answer
Answer: ((a))

removing air from the pump casing and suction line

146

The primary purpose of a shadow projector is to _____.

  1. ((a))

    detect internal flaws in a material

  2. ((b))

    analyse material composition

  3. ((c))

    produce an undistorted magnified reflected image of an object

  4. ((d))

    measure surface roughness

Show Answer
Answer: ((a))

detect internal flaws in a material

147

The Bell-Coleman cycle is also known as:

  1. ((a))

    Reversed Brayton cycle

  2. ((b))

    Brayton cycle

  3. ((c))

    Rankine cycle

  4. ((d))

    Carnot cycle

Show Answer
Answer: ((a))

Reversed Brayton cycle

148

For a symmetrical T-section, the moment of inertia through centroidal axes in its plane parallel to the flange Ixx = 2 × 107 mm4, and perpendicular to the flange is Iyy = 1.5 × 107mm4. The moment of inertia about the centroidal axis normal to the planar area works out to (in mm4):

  1. ((a))

    1.33 × 107

  2. ((b))

    2.5 × 107

  3. ((c))

    3.5 × 107

  4. ((d))

    0.5 × 107

Show Answer
Answer: ((a))

1.33 × 107

149

Which of the following best defines vapour pressure in a liquid?

  1. ((a))

    The pressure exerted by the vapour in equilibrium with its liquid at a given temperature

  2. ((b))

    The pressure exerted by the liquid molecules

  3. ((c))

    The pressure required to force the liquid into a capillary tube

  4. ((d))

    The difference between atmospheric pressure and absolute pressure

Show Answer
Answer: ((a))

The pressure exerted by the vapour in equilibrium with its liquid at a given temperature

150

Which of the following options best describes non-coplanar concurrent forces?

  1. ((a))

    Forces that meet at one point but their lines of action do not lie on the same plane

  2. ((b))

    Forces that do not meet at one point and their lines of action lie on the same plane

  3. ((c))

    Forces that meet at one point and their lines of action lie on the same plane

  4. ((d))

    Forces that do not meet at one point but their lines of action lie on different planes

Show Answer
Answer: ((a))

Forces that meet at one point but their lines of action do not lie on the same plane

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