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Machine Design

Machine Design
The included angle in unified of American National threads is

47°
29°
55°
60°

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Machine Design
The objective of caulking in a riveted joint is to make the joint

Free from corrosion
Leak-proof
Stronger in tension
Free from stress

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Machine Design
The building up of worn and undersized parts, subjected to repeated loads by electroplating is

Has no effect as regards fatigue strength
Best method
Extremely hazardous
Cheapest method

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Machine Design
For longitudinal joint in boilers, the type of joint used is

Lap joint with one ring overlapping the other
Any one of the above
Butt joint with double cover plate
Butt joint with single cover plate

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

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

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Machine Design
In cyclic loading, stress concentration is more serious in

Brittle materials
Brittle as well as ductile materials
Elastic materials
Ductile materials

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