291. A redundant frame is also called __________ frame.
[A]. perfect
[B]. imperfect
[C]. deficient
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✅ The correct answer is option B.
Engineering Mechanics MCQs
292. A body will begin to move down an inclined plane if the angle of inclination of the plane is __________ the angle of friction.
[A]. equal to
[B]. less than
[C]. greater than
null
✅ The correct answer is option C.
293. The velocity ratio in case of an inclined plane inclined at angle θ to the horizontal and weight being pulled up the inclined plane by vertical effort is
[A]. sin θ
[B]. cos θ
[C]. tan θ
[D]. cosec θ
✅ The correct answer is option A.
294. The mechanical advantage of a lifting machine is the ratio of
[A]. distance moved by effort to the distance moved by load
[B]. load lifted to the effort applied
[C]. output to the input
[D]. all of the above
✅ The correct answer is option B.
295. The maximum frictional force, which comes into play, when a body just begins to slide over the surface of the other body, is known as
[A]. static friction
[B]. dynamic friction
[C]. limiting friction
[D]. coefficient of friction
✅ The correct answer is option C.
296. The angle of inclination of a vehicle when moving along a circular path __________ upon its mass.
[A]. depends
[B]. does not depend
null
null
✅ The correct answer is option B.
297. When a rigid body is suspended vertically, and it oscillates with a small amplitude under the action of the force of gravity, the body is known as
[A]. simple pendulum
[B]. compound pendulum
[C]. torsional pendulum
[D]. second’s pendulum
✅ The correct answer is option B.
298. During elastic impact, the relative velocity of the two bodies after impact is __________ the relative velocity of the two bodies before impact.
[A]. equal to
[B]. equal and opposite to
[C]. less than
[D]. greater than
✅ The correct answer is option B.
299. If the resultant of two equal forces has the same magnitude as either of the forces, then the angle between the two forces is
[A]. 30°
[B]. 60°
[C]. 90°
[D]. 120°
✅ The correct answer is option D.
300. Which of the following is an equation of linear motion?(where, u and v = Initial and final velocity of the body, a = Acceleration of the body, and s = Displacement of the body in time t seconds.)
[A]. v = u + a.t
[B]. s = u.t + 1/2 a.t2
[C]. v2 = u2+2a.s
[D]. all of these
✅ The correct answer is option D.