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Theory of Machine

Theory of Machine
When a ship travels in a sea, which of the effect is more dangerous

Rolling
All of these
Steering
Pitching

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Theory of Machine
Carnot cycle is

a reversible cycle
a quasi static cycle
an irreversible cycle
a semi-reversible cycle

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Theory of Machine
The flank of the tooth is the surface of the tooth __________ the pitch surface.

None of these
Below
Above
At

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Theory of Machine
The total number of instantaneous centers for a mechanism consisting of n links are

n(n - 1)/2
n - 1
n
n/2

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

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Theory of Machine
If ‘D₁’ and ‘D₂’ be the diameters of driver and driven pulleys, then belt speed is proportional to

D₂/D₁
D₁
D₁/D₂
D₁.D₂

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