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Theory of Machine

Theory of Machine
The acceleration of the particle moving with simple harmonic motion is _________ at the mean position.

None of these
Maximum
Zero
Minimum

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Theory of Machine
Governor is used in automobile to

Maintain constant engine speed
Decrease the variation of speed
Limit the vehicle speed
Maximize the fuel economy

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Theory of Machine
The retardation of a flat faced follower when it has contact at the apex of the nose of a circular arc cam, is given by (where OQ = Distance between the centre of circular flank and centre of nose)

ω² × OQ cosθ
ω² × OQ sinθ
ω² × OQ tanθ
ω² × OQ

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Theory of Machine
Frequency of vibrations is usually expressed in

None of these
Number of cycles per second
Number of cycles per hour
Number of cycles per minute

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

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

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Theory of Machine
It is required to connect two parallel shafts, the distance between whose axes is small and variable. The shafts are coupled by

Universal joint
Flexible coupling
Knuckle joint
Oldham's coupling

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