500 Best Applied Mechanics MCQ
Q25). 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.
Correct Answer:
0.02 m
Explanation:
Q26). 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.
Correct Answer:
virtual work
Explanation:
Q27). 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
Correct Answer:
on equator
Explanation:
Q28). 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).All the above.
Correct Answer:
All the above.
Explanation:
Q29). 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
Correct Answer:
2000 metres
Explanation:
Q30). 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.
Correct Answer:
All the above.
Explanation:
Q31). The length of a Second’s pendulum, is
a).99.0 cm
b).99.4 cm
c).100 cm
d).101 cm
Correct Answer:
99.4 cm
Explanation:
Q32). A load of 500 kg was lifted through a distance of 13 cm. by an effort of 25 kg which moved through a distance of 650 cm. The efficiency of the lifting machine is
a).0.5
b).0.4
c).0.55
d).30%.
Correct Answer:
0.4
Explanation: