ENGINEERING MECHANICS QUIZ

Two forces are acting at an angle of 120°. The bigger force is 40 N and the resultant is perpendicular to the smaller one. The smaller force is

None of the listed here

120 N

40 N

20 N

TRUE ANSWER : ?
YOUR ANSWER : ?

The wheels of a moving car possess

Kinetic energy of translation only

Kinetic energy of translation and rotation both

Potential energy only

Kinetic energy of rotation only

TRUE ANSWER : ?
YOUR ANSWER : ?

The time of flight (t) of a projectile on a horizontal plane is given by

t = 2u. sinα/g

t = 2u. cosα/g

t = 2u/g.sinα

t = 2u. tanα/g

TRUE ANSWER : ?
YOUR ANSWER : ?

Non-coplanar non-concurrent forces are those forces which

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

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

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

None of these

TRUE ANSWER : ?
YOUR ANSWER : ?

The centre of percussion is below the centre of gravity of the body and is at a distance equal to

h/kG

h × kG

h2/kG

kG2/h

TRUE ANSWER : ?
YOUR ANSWER : ?

A framed structure is imperfect, if the numbers of members are __________ (2j - 3).

Either (B) or (C)

Less than

Equal to

Greater than

TRUE ANSWER : ?
YOUR ANSWER : ?

The acceleration of a particle moving with simple harmonic motion is __________ at the mean position.

Minimum

Zero

Maximum

None of these

TRUE ANSWER : ?
YOUR ANSWER : ?

The maximum efficiency of a lifting machine is

1/m

m/V.R.

1/(m × V.R.)

V.R./m

TRUE ANSWER : ?
YOUR ANSWER : ?

If ‘P’ is the force acting on the body, ‘m’ is the mass of the body and ‘a’ is the acceleration of the body, then according to Newton's second law of motion,

P - m.a = 0

P × m.a = 0

P + m.a = 0

P/m.a = 0

TRUE ANSWER : ?
YOUR ANSWER : ?

Moment of inertia of a circular section about its diameter (d) is

πd4/32

πd3/32

πd4/64

πd3/16

TRUE ANSWER : ?
YOUR ANSWER : ?