# List of Common Mechanical Engineering Multiple Choice Questions (MCQ) and Answers

Posted by FirstNaukri May 22, 2019

For campus placement, competitive exams or job interviews, mechanical engineering freshers should be well versed with several questions related to the important concepts of mechanical engineering. We have prepared a list of competitive MCQ for mechanical engineering students that will help you to cover important topics such as thermodynamics, machine design, engineering mechanics, strength of materials, and many more.

Start your preparation now with this list of questions:

## Multiple Choice Questions & Answers (MCQ) for Mechanical Engineering

A. polytropic
B. hyperbolic
C. isothermal
D. isentropic

A. 180o
B. 90o
C. 45o
D. 0o

### Q3: If a steam pressure of 10 kg/cm2 needs to be measured, what should be the range of pressure gauge?

A. 0 to 20 kg kg/cm2
B. 10 kg/cm2 to + 10 kg kg/cm2
C. 0 to 100 kg kg/cm2
D. 5 to 11 kg kg/cm2

### Q4: What is the common limitation of string law?

A. Valid when more than three particles are connected by a string
B. Direction of motion cannot be specified
C. Both a. and b
D. None of the above

### Q5: S.I unit of work done is

A. Newton Meter
B. Joule
C. Both a. and b
D. None of the above

### Q6: What is meant by application factor?

B. Ratio of maximum torque and average torque
C. Both a. and b
D. None of the above

A. 133.3 N/ m2
B. 1.333 N/ m2
C. 1333 N/ m2
D. 13.33 N/ m2

### Q8: What is the formula if slenderness ratio Le / K <X, where X is equal to √ ( 2π 2E / Syc )?

A. J. B. Johnson formula
B. Euler’s formula
C. Rankine formula
D. None of the above

A. Manganin
B. Monel
C. Constantan
D. None of these

A. d = 0.5 dc
B. d = 1.136 dc
C. d = 1.19 dc
D. d = 1.59 dc

A. P = τ h2 l
B. P = τ h l
C. P = τ h l2
D. None of these

### Q 12: Which of the following is correct?

A. Absolute pressure = Gauge pressure – Atmospheric pressure
B. Absolute pressure = Atmospheric pressure + Gauge pressure
C. Gauge pressure = Absolute pressure + Atmospheric pressure
D. Atmospheric pressure = Absolute pressure + Gauge pressure

A. Hydrogen
B. Nitrogen
C. Methane
D. Oxygen

### Q 15: As per Boyle’s law (where p = Absolute pressure, v = Volume, and T = Absolute temperature), for a perfect gas

A. p/T = constant, if v is kept constant
B. p v = constant, if T is kept constant
C.T/p = constant, if v is kept constant
D. v/T = constant, if p is kept constant

A. Transmission
B. Conduction
D. Convection

A. cal/c,-sec?K
B. Watt / m2 K
C. BTU/ft-h?F
D. CHU/ft-hr?C

### Q 18: What is the surface temperature of sun?

A. 6000 K
B. 2000 K
C. Infinitely large
D. 20000 K

A. 0.8 lagging
B. 0.1 lagging

### Q 20. What is the number of elastic constants for a completely anisotropic elastic material that follows Hooke’s law?

A. 3
B. 25
C. 21
D. 4

Hope the above list of multiple choice questions (MCQ) for mechanical engineering students will help you prepare for your job interview.

Watch this space for more series of questions for your campus placement and job interviews.

All the best!

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