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Engineering Mechanics

Engineering Mechanics
The velocity ratio of a simple wheel and axle with D and d as the diameters of effort wheel and load axle, is

D - d
D × d
D / d
D + d

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Engineering Mechanics
The overturning of a vehicle on a level circular path can be avoided if the velocity of vehicle is __________ √(gra/h)

Equal to
Less than
None of these
Greater than

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Engineering Mechanics
The rate of change of displacement of a body is called

None of these
Acceleration
Velocity
Momentum

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

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Engineering Mechanics
A ladder is resting on a rough ground and leaning against a smooth vertical wall. The force of friction will act

Downward at its upper end
Upward at its upper end
Perpendicular to the wall at its upper end
Zero at its upper end

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Engineering Mechanics
The matter contained in a body, is called

Momentum
Impulsive force
Mass
Weight

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