Engineering Mechanics MCQs

Question 1

Which of the following do not have identical dimensions ?

Accepted Answer

Moment of a force and angular momentum

Answer

Momentum and impulse

Answer

Torque and work

Answer

Kinetic energy and potential energy

Question 2

Which of the following is not the unit of distance ?

Accepted Answer

Milestone

Answer

Angstrom

Answer

Micron

Answer

Millimetre

Question 3

Which of the following is not the unit of power ?

Accepted Answer

Kcal/kg-sec

Answer

KW (kilowatt)

Answer

Kcal/sec

Answer

Kg-m/sec

Question 4

Which of the following is not the unit of work, energy and heat ?

Accepted Answer

Hp

Answer

Kcal

Answer

Kg m

Answer

KWhr

Question 5

Which of the following is not the unit of pressure ?

Accepted Answer

Newton

Answer

Kg/cm2

Answer

Atmosphere

Answer

Mm of wcl

Question 6

The weight of a body is due to

Accepted Answer

Gravitational force of attraction towards the centre of the earth

Answer

Centripetal force of earth

Answer

Forces experienced by body in atmosphere

Answer

Force of attraction experienced by particles

Question 7

When trying to turn a key into a lock, following is applied

Accepted Answer

Couple

Answer

Coplanar force

Answer

Lever

Answer

Moment

Question 8

According to principle of transmissibility of forces, the effect of a force upon a body is

Accepted Answer

The same at every point in its line of action

Answer

Maximum when it acts at the centre of gravity of a body

Answer

Different at different points in its line of action

Answer

Minimum when it acts at the C.G. of the body

Question 9

The magnitude of two forces, which when acting at right angle produce resultant force of √10kg and when acting at 60° produce resultant of √13kg These forces are

Accepted Answer

3 and 1 kg

Answer

2 and √6

Answer

√5 and √5

Answer

2 and 5