SECTION-2

ENGINEERING MECHANICS MCQ

##### Q6. Forces are called coplanar when all of them acting on body lie in(a) One point(b) One plane(c) Different planes(d) Perpendicular planesAns: (b) One planeQ7. The moment of inertia of a thin rod of mass ‘m’ and length ‘l’, about an axis through its centre of gravity and perpendicular to its length is(a) ml2 /4(b) ml2 / 6(c) ml2 /8(d) ml2 /12Ans: (d) ml2 /12Q8. A weight of 1000 N can be lifted by an effort of 80 N. If the velocity ratio is 20, the machine is(a) Reversible(b) Non-reversible(c) Ideal(d) None of theseAns: (a) ReversibleQ9. A rubber ball is dropped from a height of 2 m. If there is no loss of velocity after rebounding, the ball will rise to a height of(a) 1 m(b) 2 m(c) 3 m(d) 4 mAns: (b) 2 mQ10. The periodic time (T) is given by (where, ω = Angular velocity of particle in rad/s.)(a) ω/2π(b) 2π/ω(c) 2π × ω(d) π/ωAns: (b) 2π/ω

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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