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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

30°-40°
10°-15°
15°-25°
25°-30°

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Theory of Machine
The values of velocity and acceleration of piston at near dead center for a slider-crank mechanism will be

0, and less than coV
0, and more than co2r
cor, 0
0, 0

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Theory of Machine
The radius of a friction circle for a shaft rotating inside a bearing is (where r = Radius of shaft, and tan φ = Coefficient of friction between the shaft and bearing)

r cosφ
r sinφ
r tanφ
(r/2) cosφ

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Theory of Machine
Which of the following is used to control the speed variations of the engine caused by the fluctuations of the engine turning moment?

Meyer's expansion valve
Flywheel
Governor
D-slide valve

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Theory of Machine
The critical speed of a shaft depends upon its

Mass and stiffness
Stiffness
Mass
Stiffness and eccentricity

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Theory of Machine
The arrangement is called bevel gearing, when two __________ are connected by gears.

Parallel and non-coplanar shafts
Parallel and coplanar shafts
Intersecting and coplanar shafts
Non-intersecting and non-coplanar shafts

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