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Engineering Mechanics

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

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

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Engineering Mechanics
In actual machines, mechanical advantage is _________ velocity ratio.

Less than
None of these
Equal to
Greater than

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Engineering Mechanics
When a body of mass moment of inertia 'I' (about a given axis) is rotated about that axis with an angular velocity to, then the kinetic energy of rotation is

Iω2
0.5 Iω
Iω
0.5 Iω2

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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

Thrice
Same as
Four times
Twice

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

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Engineering Mechanics
The time of flight (t) of a projectile on a horizontal plane is given by

t = 2u. cosα/g
t = 2u. tanα/g
t = 2u. sinα/g
t = 2u/g.sinα

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