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Theory of Machine

Theory of Machine
The lead screw of a lathe with nut forms a

Rolling pair
Screw pair
Sliding pair
Turning pair

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Theory of Machine
When the nature of contact between the elements of a pair is such that it can only slide relative to the other, the pair is known as a

Turning pair
Sliding pair
Spherical pair
Screw pair

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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
Throw of a cam is the maximum distance of the follower from

Root circle
Pitch circle
Prime circle
Base circle

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Theory of Machine
In a four-bar chain it is required to give an oscillatory motion to the follower for a continuous rotation of the crank. For the lengths of 50 mm of crank and 70 mm of the follower, determine theoretical maximum length of coupler. The distance between fixed pivots of crank and followers is

45 mm
Slightly less than 95 mm
95 mm
Slightly more than 95 mm

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Theory of Machine
If the radius of gyration of a compound pendulum about an axis through e.g. is more, then its frequency of oscillation will be

Data are insufficient to determine same
Same
Less
More

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