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Theory of Machine

Theory of Machine
When one of the links of a kinematic chain is fixed, the chain is known as a

Inversion
Mechanism
Machine
Structure

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Theory of Machine
When the elements of a pair are kept in contact by the action of external forces, the pair is said to be a

Lower pair
Force-closed pair
Self-closed pair
Higher pair

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Theory of Machine
A circle passing through the pitch point with its center at the center of cam axis is known as

Base circle
Outer circle
Prime circle
Pitch circle

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Theory of Machine
Which of the following mechanism is an approximate straight line motion mechanism?

All of these
Grasshopper mechanism
Robert's mechanism
Watt's mechanism

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Theory of Machine
Coriolis component is encountered in

Four bar chain mechanism
Both (A) and (C) above
Slider crank mechanism
Quick return mechanism of shaper

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Theory of Machine
A body of weight W is required to move up the rough inclined plane whose angle of inclination with the horizontal is α. The effort applied parallel to the plane is given by (where μ = tan φ = Coefficient of friction between the plane and the body)

P = W tan (α + φ)
P = W (cos α + μ sin α)
P = W tan α
P = W (sin α + μ cos α)

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