Engineering Mechanics MCQs

Question 1

The ratio of limiting friction and normal reaction is known as

Accepted Answer

Coefficient of friction

Answer

Angle of friction

Answer

Angle of repose

Answer

Sliding friction

Question 2

Least force required to draw a body up the inclined plane is W sin (plane inclination + friction angle) applied in the direction

Accepted Answer

At an angle equal to the angle of friction to the inclined plane

Answer

Along the plane

Answer

Horizontally

Answer

Vertically

Question 3

Non-coplanar concurrent forces are those forces which

Accepted Answer

Meet at one point, but their lines of action do not lie on the same plane

Answer

Do not meet at one point and their lines of action do not lie on the same plane

Answer

Meet at one point and their lines of action also lie on the same plane

Answer

Do not meet at one point, but their lines of action lie on the same plane

Question 4

Coplanar concurrent forces are those forces which

Accepted Answer

Meet at one point and their lines of action also lie on the same plane

Answer

Meet at one point, but their lines of action do not lie on the same plane

Answer

Do not meet at one point and their lines of action do not lie on the same plane

Answer

Do not meet at one point, but their lines of action lie on the same plane

Question 5

Non-coplanar non-concurrent forces are those forces which

Accepted Answer

Do not meet at one point and their lines of action do not lie on the same plane

Answer

Meet at one point, but their lines of action do not lie on the same plane

Answer

Do not meet at one point but their lines of action lie on the same plane

Answer

None of the above

Question 6

A pendulum which executes one beat per second is known as

Accepted Answer

Second's pendulum

Answer

Simple pendulum

Answer

Compound pendulum

Answer

Torsional pendulum

Question 7

D'Alembert's principle is used for

Accepted Answer

Reducing the problem of kinetics to equivalent statics problem

Answer

Determining stresses in the truss

Answer

Stability of floating bodies

Answer

Designing safe structures

Question 8

Centre of gravity of a solid cone lies on the axis at the height

Accepted Answer

One fourth of the total height above base

Answer

One third of the total height above base

Answer

One-half of the total height above base

Answer

Three eighth of the total height above the base

Question 9

In the lever of third order, load ‘W’, effort ‘P’ and fulcrum ‘F’ are oriented as follows

Accepted Answer

W between P and F

Answer

F between W and P

Answer

P between W and F

Answer

W, P and F all on one side