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Engineering Mechanics

Engineering Mechanics
The maximum efficiency of a lifting machine is

V.R./m
m/V.R.
1/m
1/(m × V.R.)

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Engineering Mechanics
From a circular plate of diameter 6 cm is cut out a circle whose diameter is a radius of the plate. Find the e.g. of the remainder from the centre of circular plate

1.5 cm
1.0 cm
2.5 cm
0.5 cm

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Engineering Mechanics
The linear velocity of a body rotating at ω rad/s along a circular path of radius r is given by

ω/r
ω².r
ω.r
ω²/r

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Engineering Mechanics
A particle moves along a straight line such that distance (x) traversed in 't' seconds is given by x = t² (t - 4), the acceleration of the particle will be given by the equation

6f - 4
6f - 8
3t² + 2t
6t² - 8t

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Engineering Mechanics
The periodic time (T) is given by (where, ω = Angular velocity of particle in rad/s.)

ω/2π
π/ω
2π × ω
2π/ω

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Engineering Mechanics
Moment of inertia of a circular section about its diameter (d) is

πd4/64
πd3/16
πd4/32
πd3/32

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