APPLIED MECHANICS MCQS SET 04

APPLIED MECHANICS MCQS SET 04

1. If three rigid rods are hinged together to form a triangle and are given rotary as well as translatory motion, the number of instantaneous centres of the triangle, will be
A. 1
B. 2
C. 3
D. 4
E. 5.
Answer: Option C
 

2. The mechanical advantage of an ideal machine is 100. For moving the local through 2 m, the effort moves through
A. 0.02 m
B. 2 m
C. 2.5 m
D. 20 m.
Answer: Option A
 

3. When a body in equilibrium undergoes an infinitely small displacement, work imagined to be done, is known as
A. imaginary work
B. negative work
C. virtual work
D. none of these.
Answer: Option C
4. To attain the synchronous orbit, the launch of a satellite, is done from a place
A. on equator
B. on 30° latitude
C. on 45° latitude
D. on 60° latitude
E. on the poles.
Answer: Option A
5. Pick up the correct statement from the following :
A. Nature plays an important role in the launch of a satellite
B. The earth's gravity reduces the speed of a satellite by 32 km per second
C. The gravitational force relents as the satellite climbs higher
D. The gravitational intensity declines with height
E. All the above.
Answer: Option E
 

6. If the radius of the earth is 600 km the height of a mountain above sea level at the top of which a beat seconds pendulum at sea level, looses 27 seconds a day, is
A. 500 metres
B. 1000 metres
C. 1500 metres
D. 2000 metres
E. 25000 metres.
Answer: Option D
 

7. The total time of collision and restitution of two bodies, is called
A. time of collision
B. period of collision
C. period of impact
D. all the above.
Answer: Option D
 

8.  The length of a Second's pendulum, is
A. 99.0 cm
B. 99.4 cm
C. 100 cm
D. 101 cm
E. 101.10 cm.
Answer: Option B