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Engineering Mechanics

Engineering Mechanics
The moment of inertia of a square of side a about its diagonal is

a²/8
a⁴/16
a³/12
a⁴/12

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Engineering Mechanics
The resultant of two equal forces ‘P’ making an angle ‘θ’, is given by

2P cotθ/2
2P cosθ/2
2P tanθ/2
2P sinθ/2

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Engineering Mechanics
In a screw jack, the effort required to lift the load is given by (where W = Load lifted, α = Helix angle, and φ = Angle of friction.)

P = W tan (α + φ)
P = W cos (α + φ)
P = W tan (φ - α)
P = W tan (α - φ)

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Engineering Mechanics
The periodic time of a particle with simple harmonic motion is _________ proportional to the angular velocity.

Inversely
Directly
None of these
Square root

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Engineering Mechanics
The point, through which the whole weight of the body acts, irrespective of its position, is known as

Center of mass
Center of percussion
Center of gravity
Moment of inertia

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Engineering Mechanics
The algebraic sum of moments of the forces forming couple about any point in their plane is

Both of above are correct
Constant
Both of above are wrong
Equal to the moment of the couple

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MORE MCQ ON Engineering Mechanics

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