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Theory of Machine

Theory of Machine
If there are L number of links in a mechanism, then number of possible inversions is equal to

L
L - 1
L + 1
L + 2

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Theory of Machine
In a gear having involute teeth, the normal to the involute is a tangent to the

Pitch circle
Dedendum circle
Base circle
Addendum circle

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Theory of Machine
There are six gears A, B, C, D, E and F in a compound train. The numbers of teeth in the gears are 20, 60, 30, 80, 25 and 75 respectively. The ratio of angular speeds of the driven (F) to the driver (A) of the drive is

12
1/8
1/24
4/15

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Theory of Machine
The frictional torque transmitted in a flat pivot bearing with assumption of uniform pressure is _________ as compared to uniform wear.

None of the listed here
Less
Same
More

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Theory of Machine
In which of the following type of gear train the first gear and the last gear are co-axial.

Reverted gear train
Simple gear train
Compound gear train
None of the listed here

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Theory of Machine
The following is the inversion of slider crank chain mechanism

Oscillating cylinder engine
All of these
Whitworth quick return mechanism
Hand pump

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