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Theory of Machine

Theory of Machine
The flank of the tooth is the surface of the tooth __________ the pitch surface.

Below
At
None of these
Above

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Theory of Machine
The C.G. of a link in any mechanism would experience

Linear acceleration
Angular acceleration
No acceleration
Both angular and linear accelerations

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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

Maximum
None of these
Minimum
Zero

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Theory of Machine
If ω/ωn is very high for a body vibrating under steady state vibrations, the phase angle for all values of damping factors, will tend to approach

180°
90°
360°
0°

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Theory of Machine
The two elements of a pair are said to form a higher pair, when they

Have a surface contact when in motion
Are kept in contact by the action of external forces, when in motion
Have a line or point contact when in motion
Permit relative motion

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Theory of Machine
The absolute acceleration of any point ‘P’ in a link about center of rotation ‘O’ is

At 45° to PO
None of the listed here
Perpendicular to PO
Along PO

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