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Engineering Mechanics

Engineering Mechanics
The velocity ratio of a first system of pulleys with 4 pulleys is

8
4
20
16

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Engineering Mechanics
Coefficient of friction depends upon

None of these
Nature of surface only
Both (A) and (B)
Area of contact only

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Engineering Mechanics
Moment of inertia of a triangular section of base (b) and height (h) about an axis passing through its C.G. and parallel to the base, is

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

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Engineering Mechanics
The ideal angle of banking provided on the curves on roads depends upon

Weight of the vehicle
Coefficient of friction between the road and vehicle contact point
(Velocity)2 of the vehicle
Nature of the road surface

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Engineering Mechanics
The maximum efficiency of a screw jack is

(1 + tanφ)/(1 - tanφ)
(1 + sinφ)/(1 - sinφ)
(1 - sinφ)/(1 + sinφ)
(1 - tanφ)/(1 + tanφ)

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Engineering Mechanics
If a number of coplanar forces acting at a point be in equilibrium, the sum of clockwise moments must be __________ the sum of anticlockwise moments, about any point.

Greater than
None of these
Less than
Equal to

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MORE MCQ ON Engineering Mechanics

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