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Machine Design

Machine Design
Which one of the following is a positive drive?

Chain drive
Crossed flat belt drive
V-belt drive
Rope drive

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Machine Design
When the connected members are very yielding (soft gasket) as compared to the bolt, then the resultant load on the bolt will be equal to the

Sum of the initial tension and external load applied
External load applied
Initial tension or external load, whichever is greater
Initial tension

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

None of these
Increases
Decreases
Remains unchanged

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Machine Design
Allen bolts are

Provided with hexagonal depression in head
Designed for shock load
Used in aircraft application
Self locking bolts

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Machine Design
The arms of the pulleys for flat belt drive have

Major axis twice the minor axis
Major axis in plane of rotation
All the three characteristics
Elliptical cross-section

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Machine Design
The number of slots in a 25 mm castle nut is

8
4
2
6

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