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Theory of Machine

Theory of Machine
With single Hooke's joint it is possible to connect two shafts, the axes of which have an angular misalignment up to

40°
10°
30°
20°

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Theory of Machine
A cam mechanism imparts following motion

Oscillating
Rotating
Reciprocating
All of these

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Theory of Machine
In a Hartnell governor, the lift of the sleeve is given by (where r₁ and r₂ = Max. and min. radii of rotation, x = Length of ball arm of the lever, and y = Length of sleeve arm of the lever)

(r₁ + r₂) (x/y)
(r₁ - r₂) (y/x)
(r₁ + r₂) (y/x)
(r₁ - r₂) (x/y)

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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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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

Same
Data are insufficient to determine same
Less
More

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Theory of Machine
The balancing of a rigid rotor can be achieved by appropriately placing balancing masses in

A single plane
Two planes
Three planes
Four planes

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