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Theory of Machine

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

Universal joint
Hooke's joint
Knuckle joint
Bevel gear

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Theory of Machine
When the two elements of a pair have __________ when in motion, it is said to a lower pair.

Surface contact
Body contact
None of these
Line or point contact

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Theory of Machine
In a Hartnell governor, the lift of the sleeve is given by (where r₁ and r₂ = Max. and min. radii of rotation, x = Length of ball arm of the lever, and y = Length of sleeve arm of the lever)

(r₁ + r₂) (y/x)
(r₁ - r₂) (y/x)
(r₁ + r₂) (x/y)
(r₁ - r₂) (x/y)

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Theory of Machine
The dynamic friction is the friction experienced by a body, when the body

Is in motion
None of these
Just begins to slide over the surface of the other body
Is at rest

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Theory of Machine
For simple harmonic motion of the of follower, a cosine curve represents

Acceleration diagram
Displacement diagram
All of these
Velocity diagram

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Theory of Machine
In which of the following type of gear train the first gear and the last gear are co-axial.

Reverted gear train
None of the listed here
Simple gear train
Compound gear train

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