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Machine Design

Machine Design
The ratio of circumferential stress to longitudinal stress in a thin cylinder subjected to an internal pressure is

1
43832
2
4

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

Thrice
Twice
Half
None of these

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Machine Design
The included angle for the British standard whitworth thread is

60°
55°
29°
47.5°

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Machine Design
The yield point in static loading is __________ as compared to fatigue loading.

Lower
Same
None of these
Higher

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Machine Design
The longitudinal joint in boilers is used to get the required

Diameter of boiler
Length of boiler
Length and diameter of boiler
Efficiency of boiler

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Machine Design
The edges of the plates for cylindrical vessels are usually bevelled to an angle of 80° for

Fullering and caulking
Reducing stress concentration
Ease of manufacture
Safety

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