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Machine Design

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

6
2
8
4

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Machine Design
The contact ratio for gears is

Greater than one
Zero
Less than one
None of these

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Machine Design
A feather key is generally

Tight in both shaft and hub
Loose in both shaft and hub
Loose in shaft and tight in hub
Tight in shaft and loose in hub

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Machine Design
In order to withstand resistance to wear, the best profile of gear is

14½° full depth involute tooth
14½° stub tooth
20° involute stub tooth
20° full depth involute tooth

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Machine Design
The sleeve or muff coupling is designed as a

Hollow shaft
Thick cylinder
Solid shaft
Dun cylinder

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Machine Design
A riveted joint is a __________ fastening.

Temporary
Permanent
None of these
Either A or B

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