500 Best Applied Mechanics MCQ
Q145). A particle moving with a simple harmonic motion, attains its maximum velocity when it passes
a).the extreme point of the oscillation
b).through the mean position
c).through a point at half amplitude
d).none of these.
Correct Answer:
through the mean position
Explanation:
Q146). The unit of impulse, is
a).kg.m/sec
b).kg.m/sec^3
c).kg.m/sec^2
d).kg.m^2/sec.
Correct Answer:
kg.m/sec
Explanation:
Q147). The practical units of work, is
a).erg
b).joule
c).Newton
d).dyne.
Correct Answer:
joule
Explanation:
Q148). The rate of change of displacement of a body with respect to its surrounding, is known
a).velocity
b).acceleration
c).speed
d).none of these.
Correct Answer:
speed
Explanation:
Q149). The Centre of gravity of a 10 x 15 x 5 cm section from its bottom, is
a).7.5 cm
b).5.0 cm
c).8.75 cm
d).7.85 cm
Correct Answer:
8.75 cm
Explanation:
Q150). For a self-locking machine, the efficiency should be
a).less than 60%
b).0.5
c).more than 50%
d).None of these.
Correct Answer:
less than 60%
Explanation:
Q151). When a body moves round a fixed axis, it has
a).a rotary motion
b).a circular motion
c).a translatory
d).a rotary motion and translatory motion.
Correct Answer:
a circular motion
Explanation:
Q152). From a solid cylinder of height 8 cm and radius 4 cm, a right circular cone is scooped out on the same base and having the same height as that of the cylinder. The c.g. of the remainder is at a height of
a).4.5 cm
b).5.0 cm
c).5.25 cm
d).5.5 cm
Correct Answer:
5.0 cm
Explanation: