500 Best Applied Mechanics MCQ
Q73). The inherent property of a body which offers reluctance to change its state of rest or uniform motion, is
a).weight
b).mass
c).interia
d).momentum.
Correct Answer:
interia
Explanation:
Q74). 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 velocity ratio of the lifting machine is
a).50
b).55
c).60
d).65
Correct Answer:
50
Explanation:
Q75). The angle of friction is :
a).The ratio of the friction and the normal reaction
b).The force of friction when the body is in motion
c).The angle between the normal reaction and the resultant of normal raction and limiting friction
d).The force of friction at which the body is just about to move.
Correct Answer:
The angle between the normal reaction and the resultant of normal raction and limiting friction
Explanation:
Q76). The motion of a particle is described by the relation x = (t)^2- 10t + 30, where x is in metres and t in seconds. The total distance travelled by the particle from t= 0 to t= 10 seconds would be
a).zero
b).30 m
c).50 m
d).60 m
Correct Answer:
zero
Explanation:
Q77). Three forces which act on a rigid body to keep it in equilibrium. The forces must be coplanar and
a).concurrent
b).parallel
c).concurrent parallel
d).none of these.
Correct Answer:
concurrent
Explanation:
Q78). For perfectly elastic bodies, the value of coefficient of restitution is
a).zero
b).0.5
c).1
d).between 0 and 1.
Correct Answer:
1
Explanation:
Q79). The maximum frictional force which comes into play, when a body just begins to slide over the surface of a an other body, is known
a).sliding friction
b).rolling friction
c).limiting friction
d).none of these.
Correct Answer:
limiting friction
Explanation:
Q80). If two forces of 3 kg and 4 kg act at right angles to each other, their resultant force will be equal to
a).7 Kg
b).1 Kg
c).5 Kg
d).1/7 Kg
Correct Answer:
5 Kg
Explanation: