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Theory of Machine

Theory of Machine
In a ball bearing, ball and bearing forms a

Rolling pair
Spherical pair
Screw pair
Turning pair

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Theory of Machine
Which of the following would constitute a link?

Piston and piston rod
Piston rod and cross head
Piston, crank pin and crank shaft
Piston, piston rod and cross head

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Theory of Machine
A spring controlled governor is said to be stable if the controlling force line when produced intersects the Y-axis

Above the origin
Any one of these
At the origin
Below the origin

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Theory of Machine
A flywheel is fitted to the crankshaft of an engine having W as the amount of indicated work per revolution and permissible limits of coefficient of fluctuation of energy and speed as CE and CS respectively. The kinetic energy of the flywheel is given by

W CE / CS
2 W CE / CS
W CS / 2CE
W CE / 2CS

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Theory of Machine
The unbalanced force due to reciprocating masses

Varies in direction but constant in magnitude
Varies in magnitude but constant in direction
Constant in magnitude and direction both
Varies in magnitude and direction both

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Theory of Machine
If the rotating mass of a rim type flywheel is distributed on another rim type flywheel whose mean radius is half the mean radius of the former, then energy stored in the latter at the same speed will be

One and a half times the first one
Same as the first one
Four times the first one
One fourth of the first one

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