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Machine Design

Machine Design
Shear stress theory is applicable for

Ductile materials
Brittle materials
All of these
Elastic materials

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Machine Design
The speed of the sprocket reduces as the chain pitch __________ for a given number of teeth.

Increases
Remain same
None of these
Decreases

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Machine Design
Silver based solder is used for

Soft soldering
Brazing
Fusion welding
Flaring

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Machine Design
When a hole of diameter ‘d’ is punched in a metal of thickness 't', then the force required to punch a hole is equal to (where τu = Ultimate shear strength of the material of the plate)

π/4 × d² × tτu
π/4 × d².τu
πd.t.τu
t.τu

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Machine Design
The arms of the pulleys for flat belt drive have

All the three characteristics
Major axis in plane of rotation
Major axis twice the minor axis
Elliptical cross-section

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Machine Design
When spring index increases, the value of Wahl's stress factor

Remains same
Increases exponentially
Decreases linearly
Increases linearly

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