THEORY OF MACHINE QUIZ

A Porter governor is a

Spring loaded governor

Inertia governor

Pendulum type governor

Dead weight governor

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The velocity of sliding of meshing gear teeth is(Where ω₁ and ω₂ are angular velocities of meshing gears and ‘y’ is distance between point of contact and the pitch point)

(ω₁ × ω₂) y

(ω₁ + ω₂)/y

(ω₁ + ω₂) y

(ω₁/ω₂) y

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The main disadvantage of the sliding pair is that it is

Bulky

Both (A) and (B) above

Wears rapidly

Difficult to manufacture

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The partial balancing of reciprocating parts in locomotives produces

Hammer blow

All of these

Swaying couple

Variation in tractive force along the line of stroke

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The working depth of a gear is the radial distance from the

Pitch circle to the top of a tooth

Top of a tooth to the bottom of a tooth

Pitch circle to the bottom of a tooth

Addendum circle to the clearance circle

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Balancing of rotating and reciprocating parts of an engine is necessary when it runs at

Slow speed

Moderate speed

Highs peed

Any one of these

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A universal joint is an example of

Sliding pair

Rolling pair

Higher pair

Lower pair

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A body will begin to move down an inclined plane, if the angle of inclination of the plane is ________ the angle of friction.

Equal to

Less than

None of these

Greater than

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The inversion of a mechanism is

Obtained by fixing different links in a kinematic chain

Changing of a higher pair to a lower pair

Obtained by reversing the input and output motion

Turning its upside down

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The ratio of maximum fluctuation of energy to the work-done per cycle is called

Fluctuation of energy

None of these

Maximum fluctuation of energy

Coefficient of fluctuation of energy

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