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Theory of Machine

Theory of Machine
Hart mechanism has

Eight links
Four links
Six links
Twelve links

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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
A shaft carrying three rotors will have

One node
Three nodes
Two nodes
No node

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Theory of Machine
The natural frequency of free transverse vibrations due to uniformly distributed load acting over a simply supported shaft is (where δS = Static deflection of simply supported shaft due to uniformly distributed load)

0.6253/ √δS
0.4985/ √δS
0.571/ √δS
0.5615/ √δS

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Theory of Machine
In a steam engine, the link constitutes a

Connecting rod with big and small end brasses, caps and bolts
Piston, piston rod and cross-head
Crank pin, crankshaft and flywheel
All of these

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

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