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Theory of Machine

Theory of Machine
If the number of links in a mechanism is equal to l, then the numbers of possible inversions are equal to

l - 1
l - 2
l + 1
l

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Theory of Machine
At the nodal point in a shaft, the amplitude for torsional vibration will be

Zero
Minimum
Infinity
Maximum

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Theory of Machine
A pantograph is a mechanism with

Higher pairs
Lower pairs
Rolling pairs
Turning pairs

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Theory of Machine
When the addenda on pinion and wheel is such that the path of approach and path of recess are half of their maximum possible values, then the length of the path of contact is given by (where r = Pitch circle radius of pinion, R = Pitch circle radius of wheel, and φ = Pressure angle)

[(r + R) cosφ]/2
[(r² + R²) cosφ]/2
[(r + R) sinφ]/2
[(r² + R²) sinφ]/2

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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
The power from the engine to the rear axle of an automobile is transmitted by means of

Hooke's joint
Spur gears
Bevel gears
Worm and worm wheel

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MORE MCQ ON Theory of Machine

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