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Machine Design

Machine Design
The included angle for the British Association thread is

29°
55°
60°
47.3°

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Machine Design
If the centre distance of the mating gears having involute teeth is varied within limits, the velocity ratio

Decreases
Increases
Remains unchanged
None of these

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Machine Design
A sliding bearing which can support steady loads without any relative motion between the journal and the bearing, is called

Hydrostatic lubricated bearing
Boundary lubricated bearing
Zero film bearing
Hydrodynamic lubricated bearing

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Machine Design
The speed of the sprocket reduces as the chain pitch __________ for a given number of teeth.

Increases
None of these
Remain same
Decreases

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Machine Design
In designing a key, it is assumed that the distribution of forces along the length of key

Varies linearly
Varies exponentially, being less at the torque-input end
Varies exponentially, being more at the torque-input end
Is uniform throughout

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Machine Design
The condition for maximum power transmission is that the maximum tension in the flat belt should be equal to (Where, Pc = tension in belt due to centrifugal force)

Pc/3
1 Pc
3 Pc
2 Pc

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