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Machine Design

Machine Design
The groove angle of the pulley for rope drive is usually

60°
45°
20°
35°

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Machine Design
In case of pressure vessels having closed ends, the fluid pressure induces

Circumferential stress
None of these
Shear stress
Longitudinal stress

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Machine Design
If d is the normal diameter of a bolt in mm, then the initial tension in kg in a bolt used for making a fluid tight joint as for steam engine cover joint is calculated by the relation

138 d
151 d
124 d
168 d

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Machine Design
The square threads are usually found on

Screw cutting lathes
Railway carriage couplings
Spindles of bench vices
Feed mechanism of machine tools

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Machine Design
The contact ratio for gears is

Less than one
Greater than one
Zero
None of these

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Machine Design
The size of a cam depends upon

Pitch circle
Pitch curve
Prime circle
Base circle

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