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Engineering Mechanics

Engineering Mechanics
The coefficient of friction depends upon

Nature of surfaces
All of these
Shape of the surfaces
Area of contact

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Engineering Mechanics
The moment of inertia of a thin rod of mass 'm' and length 'l', about an axis through its centre of gravity and perpendicular to its length is

ml2/ 6
ml2/4
ml2/12
ml2/8

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Engineering Mechanics
Center of gravity of a thin hollow cone lies on the axis at a height of

One-fourth of the total height above base
Three-eighth of the total height above the base
One-half of the total height above base
One-third of the total height above base

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

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

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Engineering Mechanics
The velocity ratio for the first system of pulleys is (where n is the number of pulleys.)

n
2n
n²
2n - 1

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Engineering Mechanics
In actual machines, mechanical advantage is _________ velocity ratio.

Less than
Greater than
None of these
Equal to

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MORE MCQ ON Engineering Mechanics

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