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Machine Design

Machine Design
Shear stress theory is applicable for

Brittle materials
Ductile materials
Elastic materials
All of these

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Machine Design
When a bolt is subjected to shock loading, the resilience of the bolt should be considered in order to prevent breakage at the

Shank
Thread
Middle
Head

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

47°
29°
60°
55°

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Machine Design
A steel containing 0.8% carbon is known as

None of these
Eutectoid steel
Hypereutectoid steel
Hypo-eutectoid steel

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Machine Design
A tube has the following advantage over pipe

Smoother inside walls
Greater shock absorption
Lighter and easier to handle
All of these

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Machine Design
According to I.B.R., the thickness of the boiler shell should not be less than

4 mm
5 mm
7 mm
6 mm

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