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Theory of Machine

Theory of Machine
The size of cam depends upon

Pitch circle
Prime circle
Pitch curve
Base circle

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Theory of Machine
In order to facilitate starting of locomotive in any position, the cranks of a locomotive with two cylinders, are placed at

90° to each other
180° to each other
120° to each other
45° to each other

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Theory of Machine
The essential condition of placing the two masses, so that the system becomes dynamically equivalent, is (where l₁ and l₂ = Distance of two masses from the centre of gravity of the body, and kG = Radius of gyration of the body)

l₁l₂ = kG
l₁ = kG
l₂ = kG
l₁l₂ = kG²

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Theory of Machine
Peaucellier’s mechanism has

Eight links
Four links
Six links
Twelve links

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Theory of Machine
In Meyer's expansion valve, the expansion valve is driven by an eccentric having an angle of advance from

80°- 90°
60°-70°
70°- 80°
50°- 60°

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Theory of Machine
A kinematic chain is known as a mechanism when

None of the links is fixed
One of the links is fixed
None of these
Two of the links are fixed

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