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Engineering Mechanics

Engineering Mechanics
The maximum efficiency of a lifting machine is

1/m
m/V.R.
V.R./m
1/(m × V.R.)

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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 = ΣH/ΣV
tanθ = √(ΣV + ΣH)

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

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

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Engineering Mechanics
Moment of inertia of a triangular section of base (b) and height (h) about an axis through its base, is

bh3/36
bh3/12
bh3/8
bh3/4

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Engineering Mechanics
Two balls of equal mass and of perfectly elastic material are lying on the floor. One of the balls with velocity ‘v’ is made to strike the second ball. Both the balls after impact will move with a velocity

v
v/4
v/8
v/2

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Engineering Mechanics
The total motion possessed by a body, is called

Impulsive force
Weight
Momentum
Mass

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MORE MCQ ON Engineering Mechanics

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