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Engineering Mechanics

Engineering Mechanics
The unit of work in S.I. units is

Newton
erg
joule
kg-m

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

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

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

Square root
Inversely
None of these
Directly

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Engineering Mechanics
The forces, whose lines of action are parallel to each other and act in the same directions, are known as

Like parallel forces
Unlike parallel forces
Coplanar non-concurrent forces
Coplanar concurrent forces

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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
If tension in the cable supporting a lift moving downwards is half the tension when it is moving upwards, the acceleration of the lift is

g/4
g/3
None of these
g/2

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