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Theory of Machine

Theory of Machine
The height of a Watt's governor (in meters) is equal to (where N = Speed of the arm and ball about the spindle axis)

8.95/N²
895/N²
89.5/N²
8950/N²

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Theory of Machine
The frequency of oscillation of a torsional pendulum is

2πr/k. √(g/l)
2πk/r. √(g/l)
r/2πk. √(g/l)
r/2πk. √(l/g)

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Theory of Machine
V-belts are usually used for

Long and short drives
Long drives
None of these
Short drives

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Theory of Machine
The two parallel and coplanar shafts are connected by gears having teeth parallel to the axis of the shaft. This arrangement is known as

Helical gearing
Spur gearing
Spiral gearing
Bevel gearing

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Theory of Machine
In a drag link quick return mechanism, the shortest link is always fixed. The sum of the shortest and longest link is

Less than sum of other two
There is no such relationship
Equal to sum of other two
Greater than sum of other two

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Theory of Machine
The factional torque for square thread at the mean radius r while raising load W is given by

T = W.r tan(φ - α)
T = W.r tanφ
T = W.r tan(φ + α)
T = W.r tanα

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