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Theory of Machine

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

10°-15°
15°-25°
30°-40°
25°-30°

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Theory of Machine
For the same lift and same angle of ascent, a smaller base circle will give

A large value of pressure angle
There is no such relation with pressure angle
Something else
A small value of pressure angle

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Theory of Machine
A spring controlled governor is said to be unstable when the controlling force

Increases as the radius of rotation decreases
Increases as the radius of rotation increases
Remains constant for all radii of rotation
Decreases as the radius of rotation increases

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Theory of Machine
In vibration isolation system, if ω/ωn < 2, then for all values of damping factor, the transmissibility will be (where ω = Angular speed of the system, ωn = Natural frequency of vibration of the system)

Zero
Less than unity
Equal to unity
Greater than unity

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Theory of Machine
Hart mechanism has

Four links
Eight links
Twelve links
Six links

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Theory of Machine
The partial balancing means

Balancing partially reciprocating masses
Best balancing of engines
Balancing partially revolving masses
All of these

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