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Theory of Machine

Theory of Machine
The coefficient of fluctuation of speed is __________ of maximum fluctuation of speed and the mean speed.

Product
Ratio
Difference
Sum

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Theory of Machine
Under logarithmic decrement, the amplitude of successive vibrations are

In arithmetic progression
Constant
In geometric progression
In logarithmic progression

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Theory of Machine
The pressure angle of a cam depends upon

Angle of ascent
Offset between center lines of cam and follower
Lift of follower
All of these

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Theory of Machine
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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Theory of Machine
When the speed of the engine fluctuates continuously above and below the mean speed, the governor is said to be

Isochronous
Hunt
Unstable
Stable

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

No acceleration
Both angular and linear accelerations
Angular acceleration
Linear acceleration

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