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Engineering Mechanics

Engineering Mechanics
If the number of pulleys in a system is equal to its velocity ratio, then it is a __________ system of pulleys.

None of these
Third
First
Second

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Engineering Mechanics
Mass moment of inertia of a uniform thin rod of mass M and length (l) about its mid-point and perpendicular to its length is

(2/3) Ml²
(1/3) Ml²
(3/4) Ml²
(1/12) Ml²

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

Equal to
Greater than
None of these
Less than

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Engineering Mechanics
One joule is equal to

1 N-m
0.1 N-m
100 N-m
10 N-m

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Engineering Mechanics
The centre of gravity of an isosceles triangle with base (p) and sides (q) from its base is

[√(4p² - q²)]/6
(p² - q²)/4
(p² + q²)/4
(4p² - q²)/6

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Engineering Mechanics
If a body is acted upon by a number of coplanar non-concurrent forces, it may

Rotate about itself without moving
Be completely at rest
Move in any one direction rotating about itself
All of these

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