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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

12
16
25
32

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Theory of Machine
A ball and a socket forms a

Turning pair
Rolling pair
Spherical pair
Screw pair

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Theory of Machine
If the radius of gyration of a compound pendulum about an axis through e.g. is more, then its frequency of oscillation will be

Less
More
Same
Data are insufficient to determine same

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Theory of Machine
The velocity of the belt for maximum power is (where m = Mass of the belt in kg per meter length)

√(3m/T)
T/3
(T.g)/3
√(T/3m)

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Theory of Machine
The velocity of a flat-faced follower when it has contact with the flank of a circular arc cam, is given by

ω(R - r₁) sinθ
ω(R - r₁) cosθ
ωr₁ sinθ
ωR cosθ

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Theory of Machine
When the crank is at the inner dead centre, in a reciprocating steam engine, then the velocity of the piston will be

None of these
Zero
Maximum
Minimum

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