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Theory of Machine

Theory of Machine
In full depth involute system, the smallest number of teeth in a pinion which meshes with rack without interference is

32
25
12
16

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Theory of Machine
The component of the acceleration, parallel to the velocity of the particle, at the given instant is called

None of these
Coriolis component
Tangential component
Radial component

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Theory of Machine
A mechanism _________ for transmitting or transforming motion.

Can be used
Can not be used
None of these
Unpredictable

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Theory of Machine
The Coriolis component of acceleration exists whenever a point moves along a path that has

Tangential acceleration
Linear displacement
Rotational motion
Gravitational acceleration

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Theory of Machine
In a multiple V-belt drive, if one of the belts is broken, then we should replace

The broken belt and the belts on either side of it
The broken belt only
All the belts
None of these

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Theory of Machine
The maximum efficiency of spiral gears is (where θ = Shaft angle, and φ = Friction angle)

cos (θ - φ) + 1/ cos (θ + φ) + 1
sin (θ + φ) + 1/ cos (θ - φ) + 1
cos (θ - φ) + 1/ sin (θ + φ) + 1
cos (θ + φ) + 1/ cos (θ - φ) + 1

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