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Theory of Machine

Theory of Machine
The approximate straight line mechanism is a

3 bar linkage
8 bar linkage
Four bar linkage
6 bar linkage

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Theory of Machine
The factor which affects the critical speed of a shaft is

Span of shaft
Eccentricity
Diameter of disc
All of the listed here

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Theory of Machine
In a kinematic chain, a quaternary joint is equivalent to

Two binary joints
One binary joint
Four binary joints
Three binary joints

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Theory of Machine
Governor is used in automobile to

Maintain constant engine speed
Decrease the variation of speed
Maximize the fuel economy
Limit the vehicle speed

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Theory of Machine
In a reciprocating steam engine, when the crank has turned from inner dead centre through an angle θ, the angular velocity of the connecting rod is given by

ω cosθ/(n² - cos²θ)1/2
ω cosθ/(n² - sin²θ)1/2
ω sinθ/(n² - cos²θ)1/2
ω sinθ/(n² - sin²θ)1/2

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Theory of Machine
The condition for correct steering of a Davis steering gear is (where α = Angle of inclination of the links to the vertical)

tanα = c/2b
cotα = c/2b
sinα = b/c
cosα = c/b

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MORE MCQ ON Theory of Machine

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