Engineering Mechanics MCQs

Question 1

Periodic time of a body moving with simple harmonic motion is

Accepted Answer

Inversely proportional to its angular velocity

Answer

Directly proportional to its angular velocity

Answer

Directly proportional to the square of its angular velocity

Answer

None of the above

Question 2

Pick up an incorrect statement from the following in a simple harmonic motion

Accepted Answer

The acceleration is minimum at the end of the stroke

Answer

The velocity is maximum at its mean position

Answer

The velocity is minimum at the end of the stroke

Answer

The acceleration is zero at the mean position

Question 3

For a particle moving with a simple harmonic motion the frequency is

Accepted Answer

Inversely proportional to periodic time

Answer

Directly proportional to periodic time

Answer

Inversely proportional to its angular velocity

Answer

Directly proportional to its angular velocity

Question 4

One joule is equal to

Accepted Answer

10^7 erg

Answer

10^2 erg

Answer

10^5 erg

Answer

10^4 erg

Question 5

Joule is the unit of

Accepted Answer

Work

Answer

Force

Answer

Power

Answer

Energy

Question 6

A body of mass M falling freely under the action of gravity has following weight

Accepted Answer

Zero

Answer

M

Answer

M/2

Answer

M + gM

Question 7

Which one is a unit of time

Accepted Answer

Light year

Answer

Half year

Answer

Angstrom

Answer

Micron

Question 8

The principle of conservation of energy can't be applied in the following case

Accepted Answer

Body sliding down a rough inclined plane

Answer

Simple pendulum

Answer

Flow through a venturi tube

Answer

A particle moving in a gravitational field

Question 9

A body of mass m moving with a constant velocity v hits another body of the same mass moving with the same velocity v but in opposite direction and sticks to it, then the velocity of the compound body after collision is

Accepted Answer

Zero

Answer

v/2

Answer

4v

Answer

2v