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Engineering Mechanics

Engineering Mechanics
Moment of inertia is the

Second moment of mass
Second moment of force
Second moment of area
All of these

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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

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

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Engineering Mechanics
In a single threaded worm and worm wheel, the number of teeth on the worm is 50. The diameter of the effort wheel is 100 mm and that of load drum is 50 mm. The velocity ratio is

50
400
200
100

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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 vertex and parallel to the base, is __________ than that passing through its C.G. and parallel to the base.

Two times
Nine times
Six times
Four times

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Engineering Mechanics
When a body of mass 'm' attains a velocity 'v' from rest in time 't', then the kinetic energy of translation is

0.5 mgv2
mgv2
0.5 mv2
mv2

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

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

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MORE MCQ ON Engineering Mechanics

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