Applied Mechanics MCQs

Question 1

Power can be expressed as

Accepted Answer

work/time

Answer

work/energy

Answer

work x time

Answer

work/distance.

Question 2

The unit of impulse, is

Accepted Answer

kg.m/sec

Answer

kg.m2/sec

Answer

kg.m/sec2

Answer

kg.m2/sec2.

Question 3

According to Kennedy's theorem, if three bodies have plane motion, their instantaneous centres lie on

Accepted Answer

a straight line

Answer

a point

Answer

two straight lines

Answer

a triangle.

Question 4

Total no of instantaneous centres of a machine having n links, is

Accepted Answer

none of these.

Answer

n/2

Answer

1 + n

Answer

(1+n)/2

Question 5

If the angle between the applial force and the direction of motion of a body, is between 90? and 180?, the work done, is called

Accepted Answer

negative work.

Answer

virtual work

Answer

imaginary work

Answer

zero work

Question 6

To avoid bending action at the base of a pier,

Accepted Answer

suspension and anchor cables are fixed to pier top

Answer

suspension and anchor cables are kept at the same level

Answer

suspension cable and anchor cables are attached to a saddle mounted on rollers on top of the pier

Answer

none the these.

Question 7

Pick up the incorrect statement from the following. In case of suspension bridge due to rise in temperature,

Accepted Answer

dip of the cable decreases

Answer

dip of the cable increases

Answer

length of the cable increases

Answer

none of the these.

Question 8

The intrinsic equation of catenary is

Accepted Answer

S = c tan w

Answer

y = c cosh x/c

Answer

y = c cosh w

Answer

y = sinh w.

Question 9

A satellite is said to move in a synchronous orbit if it moves at an altitude of 36,000 km with a maximum velocity of about

Accepted Answer

11,000 km per hour.

Answer

7,000 km per hour

Answer

8,000 km per hour

Answer

9,000 km per hour