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Engineering Mechanics

Engineering Mechanics
An ideal machine is one whose efficiency is

1
Between 70 and 80%
Between 60 and 70 %
Between 80 and 90%

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Engineering Mechanics
Two like parallel forces are acting at a distance of 24 mm apart and their resultant is 20 N. It the line of action of the resultant is 6 mm from any given force, the two forces are

15 N and 15 N
20 N and 5 N
None of these
15 N and 5 N

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Engineering Mechanics
The slope on the road surface generally provided on the curves is known as

Angle of repose
Angle of banking
Angle of friction
None of these

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Engineering Mechanics
Moment of inertia of a rectangular section having width (b) and depth (d) about an axis passing through its C.G. and parallel to the depth (d), is

db³/36
bd³/36
db³/12
bd³/12

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Engineering Mechanics
One joule is equal to

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

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Engineering Mechanics
Mass moment of inertia of a thin rod about its one end is ___________ the mass moment of inertia of the same rod about its mid-point

Same as
Four times
Twice
Thrice

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