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Theory of Machine

Theory of Machine
The maximum value of the pressure angle in case of cam is kept as

20°
10°
14°
30°

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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

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

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Theory of Machine
________ is an inversion of Double slider crank chain.

Reciprocating engine
Hand pump
Scotch yoke mechanism
Coupling rod of a locomotive

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Theory of Machine
The swaying couple is due to the

Primary unbalanced force
Partial balancing
Two cylinders of locomotive
Secondary unbalanced force

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Theory of Machine
If the number of links in a mechanism is equal to l, then the numbers of possible inversions are equal to

l - 2
l + 1
l
l - 1

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Theory of Machine
For S.H.M. cam, the acceleration of the follower at the ends of the stroke and aimed stroke respectively, is

Minimum and maximum
Zero and minimum
Maximum and zero
Zero and maximum

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