500 Best Applied Mechanics MCQ
Q113). One half of a vibration of a body, is called
a).period time
b).oscillation
c).beat
d).amplitude.
Correct Answer:
beat
Explanation:
Q114). On a ladder resisting on a smooth ground and leaning against a rough vertical wall, the force of friction acts
a).towards the wall at its upper end
b).away from the wall at its upper end
c).upwards at its upper end
d).downwards at its upper end
Correct Answer:
upwards at its upper end
Explanation:
Q115). The acceleration of a particle moving along the circumference of a circle with a uniform speed, is directed
a).radially
b).tangentially at that point
c).away from the centre
d).towards the centre.
Correct Answer:
tangentially at that point
Explanation:
Q116). From the circular plate of a diameter 6 cm is cut out a circular plate whose diameter is equal to radius of the plate. The c.g. of the remainder shifts from the original position through
a).0.25 cm
b).0.50 cm
c).0.75 cm
d).1.00 cm.
Correct Answer:
0.50 cm
Explanation:
Q117). In simple harmonic motion, acceleration of a particle is proportional to
a).rate of change of velocity
b).displacement
c).velocity
d).direction
Correct Answer:
displacement
Explanation:
Q118). A heavy ladder resting on a floor and against a vertical wall may not be in equilibrium, if
a).floor is smooth and the wall is rough
b).floor is rough and the wall is smooth
c).floor and wall both are smooth surfaces
d).floor and wall both are rough surfaces.
Correct Answer:
floor and wall both are smooth surfaces
Explanation:
Q119). In a simple screw jack, the pitch of the screw is 9 mm and length of the handle operating the screw is 45 cm. The velocity ratio of the system is
a).1.5
b).5
c).25
d).314
Correct Answer:
314
Explanation:
Q120). To double the period of oscillation of a simple pendulum
a).the mass of its bob should be doubled
b).the mass of its bob should be quadrupled
c).its lenght should be quadrupled
d).its length should be doubled.
Correct Answer:
its lenght should be quadrupled
Explanation: