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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 wheels of a moving car possess

Potential energy only
Kinetic energy of rotation only
Kinetic energy of translation only
Kinetic energy of translation and rotation both

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Engineering Mechanics
The velocity ratio for the third system of pulleys is

2n - 1
n²
2n
n

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Engineering Mechanics
If a number of forces are acting at a point, their resultant will be inclined at an angle 'θ' with the horizontal, such that

tanθ = √(ΣV + ΣH)
tanθ = ΣV/ΣH
tanθ = ΣV × ΣH
tanθ = ΣH/ΣV

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Engineering Mechanics
The forces, which meet at one point and their lines of action also lie on the same plane, are known as

Non-coplanar concurrent forces
Non-coplanar non-concurrent forces
Coplanar non-concurrent forces
Coplanar concurrent forces

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Engineering Mechanics
The linear velocity of a body rotating at ω rad/s along a circular path of radius r is given by

ω.r
ω².r
ω/r
ω²/r

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MORE MCQ ON Engineering Mechanics

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