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Machine Design

Machine Design
The pitch of threads on a Jock nut in comparison to pitch of nut is

Coarser
Very fine
Same
Finer

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Machine Design
Stress concentration in cyclic loading is more serious in

Equally serious in both cases
Brittle materials
Ductile materials
Depends on other factors

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Machine Design
The rivet head used for boiler plate riveting is usually

Snap head
Conical head
Counter sunk head
Pan Head

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Machine Design
The maximum normal stress theory is used for

Non-ferrous materials
Plastic materials
Brittle materials
Ductile materials

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Machine Design
The temperature at which the new grains are formed in the metal is known as

Upper critical temperature
Lower critical temperature
None of these
Recrystallization temperature

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Machine Design
A pressure vessel is said to be a thick shell, if the ratio of wall thickness to its diameter is

Greater than 1/10
Less than 1/10
None of these
Equal to 1/10

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