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Engineering Mechanics

Engineering Mechanics
The friction experienced by a body, when in motion, is known as

Limiting friction
Static friction
Dynamic friction
Rolling friction

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Engineering Mechanics
The centre of gravity of an isosceles triangle with base (p) and sides (q) from its base is

[√(4p² - q²)]/6
(4p² - q²)/6
(p² - q²)/4
(p² + q²)/4

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Engineering Mechanics
The maximum efficiency of a lifting machine is

1/(m × V.R.)
m/V.R.
V.R./m
1/m

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Engineering Mechanics
The moment of inertia of a solid cone of mass ‘m’ and base radius ‘r’ about its vertical axis is

2mr²/5
4mr²/5
3mr²/10
3mr²/5

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Engineering Mechanics
A body of weight 'W' is required to move up on rough inclined plane whose angle of inclination with the horizontal is 'α'. The effort applied parallel to the plane is given by (where μ = tanφ = Coefficient of friction between the plane and the body.)

P = W tanα
P = W (sinα + μcosα)
P = W (cosα + μsinα)
P = W tan (α + φ)

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

Heat energy
Electrical energy
Kinetic energy
Strain energy

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MORE MCQ ON Engineering Mechanics

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