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Theory of Machine

Theory of Machine
Rectilinear motion of piston is converted into rotary by

Gudgeon pin
Cross head
Slider crank
Connecting rod

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Theory of Machine
Whirling speed of the shaft is the speed at which

Combination of transverse and longitudinal vibration occurs
Shaft tends to vibrate vigorously in transverse direction
Torsional vibrations occur
Shaft tends to vibrate in longitudinal direction

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Theory of Machine
With usual notations for different parameters involved, the maximum fluctuations of energy for a flywheel is given by

EC S/2
2E²CS
2ECS²
2ECS

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Theory of Machine
The radial distance from the top of a tooth to the bottom of a tooth in a meshing gear, is called

Clearance
Addendum
Dedendum
Working depth

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Theory of Machine
The purpose of a link is to

Transmit motion
Act as a support
All of these
Guide other links

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Theory of Machine
The essential condition of placing the two masses, so that the system becomes dynamically equivalent, is (where l₁ and l₂ = Distance of two masses from the centre of gravity of the body, and kG = Radius of gyration of the body)

l₁ = kG
l₁l₂ = kG
l₂ = kG
l₁l₂ = kG²

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