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Machine Design

Machine Design
The following type of nut is used with alien bolt

Hexagonal nut
Castle nut
Slotted nut
Any one of the above

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Machine Design
Which of the following screw thread is used for power transmission in one direction only?

Acme threads
Multiple threads
Buttress threads
Square threads

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

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

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Machine Design
Lewis equation is applied

Only to the gear
To weaker of the pinion or gear
Only to the pinion
To stronger of the pinion or gear

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Machine Design
A feather key is generally

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

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Machine Design
In helical gears, the right hand helixes on one gear will mesh __________ helixes on the other gear.

None of these
Right hand
Left hand
Both A and B

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