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Engineering Mechanics

Engineering Mechanics
Moment of inertia of a circular section about its diameter (d) is

πd4/64
πd3/32
πd4/32
πd3/16

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Engineering Mechanics
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.)

v2 = u2 + 2a.s
s = u.t + ½ a.t2
v = u + a.t
All of these

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Engineering Mechanics
A machine having an efficiency less than 50%, is known as

Reversible machine
Non-reversible machine
Ideal machine
Neither reversible nor non-reversible machine

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Engineering Mechanics
The velocity ratio of a differential wheel and axle with 'D' as the diameter of effort wheel and d1 and d2 as the diameters of larger and smaller axles respectively, is

2D/(d₁ - d₂)
D/(d₁ + d₂)
D/(d₁ - d₂)
2D/(d₁ + d₂)

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Engineering Mechanics
According to parallel axis theorem, the moment of inertia of a section about an axis parallel to the axis through center of gravity (i.e. IP) is given by(where, A = Area of the section, IG = Moment of inertia of the section about an axis passing through its C.G., and h = Distance between C.G. and the parallel axis.)

IP = IG + Ah2
IP = Ah2 / IG
IP = IG / Ah2
IP = IG - Ah2

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Engineering Mechanics
One kg force is equal to

9.8 N
8.9 N
7.8 N
12 N

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MORE MCQ ON Engineering Mechanics

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