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Theory of Machine

Theory of Machine
For fluctuating loads, well suited bearing is

Thrust bearing
Needle roller bearing
Ball bearing
Roller bearing

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Theory of Machine
In full depth involute system, the smallest number of teeth in a pinion which meshes with rack without interference is

12
16
32
25

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Theory of Machine
When a point moves along a straight line, its acceleration will have

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

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Theory of Machine
The Whitworth quick return motion mechanism is formed in a slider crank chain when the

Smallest link is a fixed link
Longest link is a fixed link
Slider is a fixed link
Coupler link is fixed

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

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Theory of Machine
The transmissibility, for all values of damping factor, will be less than unity, if ω/ωn is

Greater than 2
Less than 2
Equal to 1
Equal to 2

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