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Engineering Mechanics

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

kg-m
Newton
erg
joule

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Engineering Mechanics
In order to double the period of simple pendulum, the length of the string should be

Doubled
None of these
Halved
Quadrupled

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

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

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Engineering Mechanics
On the ladder resting on the ground and leaning against a smooth vertical wall, the force of friction will be

Perpendicular to the wall at its upper end
Downwards at its upper end
Zero at its upper end
Upwards at its upper end

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Engineering Mechanics
The moment of inertia of a rectangular section 3 cm wide and 4 cm deep about X-X axis is

20 cm4
12 cm4
16 cm4
9 cm4

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Engineering Mechanics
The unit of moment of inertia of an area is

kg/m2
m4
kg-m2
kg-m-s2

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MORE MCQ ON Engineering Mechanics

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