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Theory of Machine

Theory of Machine
The velocity of the belt for maximum power is (where m = Mass of the belt in kg per meter length)

T/3
(T.g)/3
√(T/3m)
√(3m/T)

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Theory of Machine
When the pitching of a ship is upward, the effect of gyroscopic couple acting on it will be

To raise the stern and lower the bow
To raise the bow and lower the stern
To move the ship towards port side
To move the ship towards starboard

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Theory of Machine
The secondary unbalanced force is maximum __________ in one revolution of the crank.

Four times
Sixteen times
Eight times
Two times

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Theory of Machine
The periodic time is given by (where ω = Angular velocity of the particle in rad/s)

ω × 2π
π/ω
2π/ω
ω/2π

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Theory of Machine
The pressure angle of a cam depends upon

All of these
Offset between center lines of cam and follower
Lift of follower
Angle of ascent

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Theory of Machine
For S.H.M. cam, the acceleration of the follower at the ends of the stroke and aimed stroke respectively, is

Maximum and zero
Zero and maximum
Minimum and maximum
Zero and minimum

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