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Engineering Mechanics

Engineering Mechanics
The maximum efficiency of a lifting machine is

m/V.R.
V.R./m
1/(m × V.R.)
1/m

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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

16 cm4
9 cm4
20 cm4
12 cm4

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Engineering Mechanics
According to parallel axis theorem, the moment of inertia of a section about an axis parallel to the axis through center of gravity (i.e. IP) is given by(where, A = Area of the section, IG = Moment of inertia of the section about an axis passing through its C.G., and h = Distance between C.G. and the parallel axis.)

IP = IG / Ah2
IP = IG - Ah2
IP = Ah2 / IG
IP = IG + Ah2

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Engineering Mechanics
A cable with a uniformly distributed load per horizontal meter run will take the following shape

Straight line
Parabola
Elliptical
Hyperbola

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Engineering Mechanics
The rate of doing work is known as

None of these
Power
Kinetic energy
Potential energy

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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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MORE MCQ ON Engineering Mechanics

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