500 Best Applied Mechanics MCQ
Q169). The centre of gravity of a plane lamina will not be at its geometrical centre if it is a
a).circle
b).equilateral triangle
c).rectangle
d).right angled triangle.
Correct Answer:
right angled triangle.
Explanation:
Q170). The motion of a particle moving with S.H.M. from an extremity to the other, constitutes
a).half an oscillation
b).one full oscillation
c).two oscillations
d).none of these.
Correct Answer:
half an oscillation
Explanation:
Q171). Two parallel forces 20 kg and 15 kg act. In order that the distance of the resultant from 20 kg force may be the same as that of the former resultant was from 15 kg, the 20 kg force is diminished by
a).5.5 kg
b).6.25 kg
c).8.75 kg
d).10.5 kg.
Correct Answer:
8.75 kg
Explanation:
Q172). The velocity of a moving body, is
a).a vector quantity
b).a scalar quantity
c).a constant quantity
d).none of these.
Correct Answer:
a vector quantity
Explanation:
Q173). If two equal forces of magnitude act at an angle θ, their resultant, will be
a).P cos θ/2
b).2P sin θ/2
c).P tan θ/2
d).2P cos θ/2
Correct Answer:
2P cos θ/2
Explanation:
Q174). The centre of gravity of a quadrant of a circle lies along its central radius at a distance of
a).0.2 R
b).0.3 R
c).0.4 R
d).0.6 R
Correct Answer:
0.6 R
Explanation:
Q175). A geo-stationary satellite is one which orbits the earth with a velocity of rotation of
a).moon
b).earth
c).sun
d).pole.
Correct Answer:
earth
Explanation:
Q176). The direction of projection should bisect the angle between the inclined plane and the vertical for a range of a projectile on inclined plane
a).to be zero
b).to be maximum
c).to be minimum
d).none of the these.
Correct Answer:
to be maximum
Explanation: