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Engineering Mechanics

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

erg
Newton
joule
kg-m

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Engineering Mechanics
The moment of inertia of a solid sphere of mass ‘m’ and radius ‘r’ is

mr²/2
mr²
2mr²/5
2mr²/3

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Engineering Mechanics
When the spring of a watch is wound, it will possess

Strain energy
Electrical energy
Heat energy
Kinetic energy

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Engineering Mechanics
Two balls of equal mass and of perfectly elastic material are lying on the floor. One of the balls with velocity ‘v’ is made to strike the second ball. Both the balls after impact will move with a velocity

v/4
v/2
v
v/8

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Engineering Mechanics
The C.G. of a solid hemisphere lies on the central radius 3r

At distance — from the plane base
At distance — from the plane base 3r
At distance — from the plane base 3r
At distance — from the plane base 3r

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Engineering Mechanics
The law of the machine is (where P = Effort applied to lift the load, m = A constant which is equal to the slope of the line, W = Load lifted, and C = Another constant which represents the machine friction.)

P = C - mW
P = m/W + C
P = mW + C
P = mW - C

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MORE MCQ ON Engineering Mechanics

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