Engineering Mechanics MCQs

Question 1

The ideal angle of banking provided on the curves on roads depends upon

Accepted Answer

(Velocity)2 of the vehicle

Answer

Weight of the vehicle

Answer

Nature of the road surface

Answer

Coefficient of friction between the road and vehicle contact point

Question 2

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

Accepted Answer

$${	ext{T}}\omega $$ (in watts)

Answer

$$\frac{{{	ext{T}}\omega }}{{60}}$$ (in watts)

Answer

$$\frac{{{	ext{T}}\omega }}{{75}}$$ (in kilowatts)

Answer

$$\frac{{{	ext{T}}\omega }}{{4500}}$$ (in kilowatts)

Question 3

The force induced in the string BC due to the load 'W' as shown in the below figure is

Accepted Answer

W cotθ

Answer

W sinθ

Answer

W cosθ

Answer

W tanθ

Question 4

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

Accepted Answer

0.5 cm

Answer

1.0 cm

Answer

1.5 cm

Answer

2.5 cm

Question 5

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

Accepted Answer

Less inclined when standing

Answer

More inclined when moving

Answer

Less inclined when moving

Answer

More inclined when standing

Question 6

According to Newton's first law of motion,

Accepted Answer

Everybody continues in its state of rest or of uniform motion, in a straight line, unless it is acted upon by some external force

Answer

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

Answer

To every action, there is always an equal and opposite reaction

Answer

None of the above

Question 7

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

Accepted Answer

Unlike parallel forces

Answer

Coplanar concurrent forces

Answer

Coplanar non-concurrent forces

Answer

Like parallel forces

Question 8

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

Accepted Answer

All of these

Answer

Direction of the axis of rotation

Answer

Magnitude of angular displacement

Answer

Sense of angular displacement

Question 9

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

Accepted Answer

Weight

Answer

Impulsive force

Answer

Mass

Answer

Momentum