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Engineering Mechanics

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
The power developed by a body acted upon by a torque 'T' Newton meter (N - m) and revolving at ω radian/s is given by

T.ω/75 (in kilowatts)
T.ω/4500 (in kilowatts)
T.ω (in watts)
T.ω/60 (in watts)

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Engineering Mechanics
The unit of moment of inertia of an area is

m4
kg-m2
kg/m2
kg-m-s2

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Engineering Mechanics
A trolley wire weighs 1.2 kg per meter length. The ends of the wire are attached to two poles 20 meters apart. If the horizontal tension is 1500 kg find the dip in the middle of the span

3.0 cm
2.5 cm
5.0 cm
4.0 cm

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Engineering Mechanics
One joule is equal to

0.1 N-m
1 N-m
100 N-m
10 N-m

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Engineering Mechanics
The velocity of a particle (v) moving with simple harmonic motion, at any instant is given by (where, r = Amplitude of motion, and y = Displacement of the particle from mean position.)

ω.√(r² - y²)
ω.√(y² - r²)
ω².√(r² - y²)
ω².√(y² - r²)

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