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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°
30°
20°
10°

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Theory of Machine
A disc is a spinning with an angular velocity ω rad/s about the axis of spin. The couple applied to the disc causing precession will be (where I = Mass moment of inertia of the disc, and ωP = Angular velocity of precession of the axis of spin)

(1/2).Iω²
Iω²
(1/2). I ω ωP
I ω ωP

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Theory of Machine
Which one of the following can completely balance several masses revolving in different planes on a shaft?

Two masses in any two planes
Two equal masses in any two planes
A single mass in different planes
A single mass in one of the planes of the revolving masses

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Theory of Machine
The indicator using Watt mechanism is known as

Thomson indicator
Simplex indicator
Richard indicator
Thompson indicator

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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) (x/y)
(r₁ - r₂) (y/x)

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Theory of Machine
When a point at the end of a link moves with constant angular velocity, its acceleration will have

Tangential component only
Radial and tangential components both
Radial component only
Coriolis component only

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