Engineering Mechanics MCQ Questions & Answers

1

The power developed by a body acted upon by a torque 'T' Newton meter (N - m) and revolving at $$\omega $$ radian/s is given by

A) $${\text{T}}\omega $$ (in watts) B) $$\frac{{{\text{T}}\omega }}{{60}}$$ (in watts) C) $$\frac{{{\text{T}}\omega }}{{75}}$$ (in kilowatts) D) $$\frac{{{\text{T}}\omega }}{{4500}}$$ (in kilowatts)

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Answer & Solution

Answer: Option A

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2

The force induced in the string BC due to the load 'W' as shown in the below figure is
Engineering Mechanics mcq question image

A) W sinθ B) W cosθ C) W tanθ D) W cotθ

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Answer & Solution

Answer: Option D

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3

From a circular plate of diameter 6 cm is cut out a circle whose diameter is a radius of the plate. Find the e.g. of the remainder from the centre of circular plate

A) 0.5 cm B) 1.0 cm C) 1.5 cm D) 2.5 cm

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Answer & Solution

Answer: Option A

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4

If rain is falling in the opposite direction of the movement of a pedestrian, he has to hold his umbrella

A) More inclined when moving B) Less inclined when moving C) More inclined when standing D) Less inclined when standing

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Answer & Solution

Answer: Option D

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5

According to Newton's first law of motion,

A) Everybody continues in its state of rest or of uniform motion, in a straight line, unless it is acted upon by some external force B) The rate of change of momentum is directly proportional to the impressed force, and takes place in the same direction, in which the force acts C) To every action, there is always an equal and opposite reaction D) None of the above

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Answer & Solution

Answer: Option A

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6

The three forces of 100 N, 200 N and 300 N have their lines of action parallel to each other but act in the opposite directions. These forces are known as

A) Coplanar concurrent forces B) Coplanar non-concurrent forces C) Like parallel forces D) Unlike parallel forces

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Answer & Solution

Answer: Option D

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7

In order to completely specify angular displacement by a vector, it must fix

A) Direction of the axis of rotation B) Magnitude of angular displacement C) Sense of angular displacement D) All of these

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Answer & Solution

Answer: Option D

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8

The force, by which the body is attracted, towards the center of the earth, is called

A) Impulsive force B) Mass C) Weight D) Momentum

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Answer & Solution

Answer: Option C

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9

In actual machines, mechanical advantage is _________ velocity ratio.

A) Equal to B) Less than C) Greater than D) None of these

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Answer & Solution

Answer: Option B

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10

Whenever a force acts on a body and the body undergoes a displacement, then

A) Work is said to be done B) Power is being transmitted C) Body has kinetic energy of translation D) None of these

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Answer & Solution

Answer: Option A

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Engineering Mechanics MCQ Questions & Answers | Mechanical Engineering