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Theory of Machine

Theory of Machine
In order to double the period of a simple pendulum, the length of the string should be

Quadrupled
Doubled
None of these
Halved

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Theory of Machine
In full depth involute system, the smallest number of teeth in a pinion which meshes with rack without interference is

12
25
32
16

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Theory of Machine
The ratio of height of Porter governor (when length of arms and links are equal) to the height of Watt's governor is (where m = Mass of the ball, and M = Mass on the sleeve)

(m + M)/M
(m + M)/m
M/(m + M)
m/(m + M)

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Theory of Machine
For simple harmonic motion of the of follower, a cosine curve represents

Velocity diagram
Acceleration diagram
All of these
Displacement diagram

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Theory of Machine
The radial distance of a tooth from the pitch circle to the bottom of the tooth is called

Addendum
Dedendum
Clearance
Working depth

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Theory of Machine
Frequency of vibrations is usually expressed in

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

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