## ENGINEERING MECHANICS MCQ

SECTION-2

##### Q51. 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 (a) sinθ(b) cosθ(c) tanθ(d) cosecθAns: (a) sinθQ52. 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 pendulumAns: (b) Compound pendulumQ53. The range of a projectile is maximum, when the angle of projection is(a) 30°(b) 45°(c) 60°(d) 90°Ans: (b) 45°Q54. The acceleration of a particle moving with simple harmonic motion, at any instant is given by(a) ω.y(b) ω2.y(c) ω2/y(d) ω3.yAns: (b) ω2.yQ55. The potential energy of a vertically raised body is __________ the kinetic energy of a vertically falling body.(a) Equal to(b) Less than(c) Greater than(d) None of theseAns: (a) Equal toQ56. The linear acceleration (a) of a body rotating along a circular path of radius (r) with an angular acceleration of α rad/s2, is(a) a = α/ r(b) a = α.r(c) a = r / α(d) None of theseAns: (b) a = α.rQ57. The units of moment of inertia of mass are(a) kg-m²(b) m²/kg.(c) kg/m²(d) kg/mAns: (a) kg-m²Q58. Which of the following is not the unit of energy?(a) kg m(b) kcal(c) Watt(d) Watt hoursAns: (c) WattQ59. Whenever a force acts on a body and the body undergoes a displacement, then(a) Work is said to be done(b) Power is being transmitted(c) Body has kinetic energy of translation(d) None of theseAns: (a) Work is said to be doneQ60. The power developed by a body acted upon by a torque T Newton metre (N – m) and revolving at ω radian/s is given by(a) T.ω (in watts)(b) T.ω/60 (in watts)(c) T.ω/75 (in kilowatts)(d) T.ω/4500 (in kilowatts)Ans: (a) T.ω (in watts)

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##### Read More Sections of Engineering Mechanics

Each section contains maximum 80 Questions. To practice more questions visit other sections.

Engineering Mechanics Objective Questions – Section-1

Engineering Mechanics Objective Questions – Section-2

Engineering Mechanics Objective Questions – Section-3

Engineering Mechanics Objective Questions – Section-4