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Theory of Machine

Theory of Machine
In automobiles the power is transmitted from gear box to differential through

Universal joint
Bevel gear
Hooke's joint
Knuckle joint

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Theory of Machine
Rectangular bar in a rectangular hole is the following type of pair

Incompletely constrained motion
Partially constrained motion
Freely constrained motion
Completely constrained motion

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Theory of Machine
The working depth of a gear is the radial distance from the

Pitch circle to the top of a tooth
Addendum circle to the clearance circle
Pitch circle to the bottom of a tooth
Top of a tooth to the bottom of a tooth

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Theory of Machine
In a screw jack, the effort required to lower the load W is given by

P = W tan(α + φ)
P = W tan(α - φ)
P = W cos(α + φ)
P = W tan(φ - α)

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Theory of Machine
In multi V-belt transmission, if one of the belt is broken, we have to change the

Broken belt
All the belts
There is no need of changing any one as remaining belts can take care of transmission of load
Broken belt and its adjacent belts

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Theory of Machine
Which gear train is used for higher velocity ratios in a small space?

Compound gear train
Reverted gear train
Epicyclic gear train
Simple gear train

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