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Theory of Machine

Theory of Machine
For an involute gear, the ratio of base circle radius and pitch circle radius is equal to

secφ
cosφ
cosecφ
sinφ

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Theory of Machine
The fundamental equation for correct steering is (where φ and α = Angle through which the axis of the outer wheel and inner wheel turns respectively, c = Distance between the pivots of the front axles, and d = Wheel base)

sinφ + sinα = b/c
cosφ - sinα = c/b
cotφ - cotα = c/b
tanφ + cotα = b/c

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Theory of Machine
A kinematic chain requires at least

2 links and 3 turning pairs
5 links and 4 turning pairs
3 links and 4 turning pairs
4 links and 4 turning pairs

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Theory of Machine
The moment on the pulley which produces rotation is called

Inertia
Momentum
Moment of momentum
Torque

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Theory of Machine
Oldham’s coupling is an inversion of the kinematic chain used in

Elliptical trammels
Whitworth quick return mechanism
Universal joint
Rotary engine

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Theory of Machine
When the load on the engine increases, it becomes necessary to increase the supply of working fluid and when the load decreases, less working fluid is required. The supply of the working fluid to the engine is controlled by a

Meyer's expansion valve
Governor
D-slide valve
Flywheel

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