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Machine Design

Machine Design
Two shafts of the same length and material are joined in series. If the ratio of their diameters is 2, then the ratio of their angles of twist will be

4
2
16
8

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Machine Design
A sliding bearing in which although lubricant is present, the working surfaces __________ contact each other at least part of the time, is called boundary lubricated bearing.

Partially
Either A or B
None of these
Fully

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Machine Design
The taper on key is given on

On both sides
Top side only
Bottom side only
Any side

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Machine Design
The minimum number of teeth on the pinion which will mesh with any gear without interference for 20° full depth involute teeth will be

18
24
12
14

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Machine Design
In worm gears, the pressure angle is __________ the angle between two inclined faces in axial plane.

None of these
Thrice
Half
Twice

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Machine Design
The smallest diameter of an external or internal screw thread is known as

Minor diameter
Major diameter
Pitch diameter
None of these

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