ENGINEERING MECHANICS QUIZ

The velocity of a particle (v) moving with simple harmonic motion, at any instant is given by (where, r = Amplitude of motion, and y = Displacement of the particle from mean position.)

ω.√(y² - r²)

ω.√(r² - y²)

ω².√(y² - r²)

ω².√(r² - y²)

TRUE ANSWER : ?
YOUR ANSWER : ?

Work done is said to be zero, when

Some force acts on a body, but displacement is zero

Either (A) or (B)

No force acts on a body but some displacement takes place

None of these

TRUE ANSWER : ?
YOUR ANSWER : ?

The unit of angular velocity is

m/min

Both (B) and (C)

Revolutions/min

rad/s

TRUE ANSWER : ?
YOUR ANSWER : ?

The moment of inertia of a square of side (a) about an axis through its center of gravity is

a4/8

a4/36

a4/12

a4/4

TRUE ANSWER : ?
YOUR ANSWER : ?

Which of the following are vector quantities?

Linear velocity

All of these

Linear displacement

Linear acceleration

TRUE ANSWER : ?
YOUR ANSWER : ?

The matter contained in a body, is called

Weight

Mass

Momentum

Impulsive force

TRUE ANSWER : ?
YOUR ANSWER : ?

One kg force is equal to

12 N

8.9 N

9.8 N

7.8 N

TRUE ANSWER : ?
YOUR ANSWER : ?

The linear velocity of a body rotating at ω rad/s along a circular path of radius r is given by

ω².r

ω²/r

ω.r

ω/r

TRUE ANSWER : ?
YOUR ANSWER : ?

Which of the following statement is correct in connection with projectiles?

A path, traced by a projectile in the space, is known as trajectory.

The velocity, with which a projectile is projected, is known as the velocity of projection.

The angle, with the horizontal, at which a projectile is projected, is known as angle of projection.

All of these

TRUE ANSWER : ?
YOUR ANSWER : ?

The overturning of a vehicle on a level circular path can be avoided if the velocity of vehicle is __________ √(gra/h)

Greater than

Less than

Equal to

None of these

TRUE ANSWER : ?
YOUR ANSWER : ?