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MACHINE DESIGN

Machine Design
The notch angle of the Izod impact test specimen is

20°
45°
30°
10°

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Machine Design
For maximum power, the velocity of the belt will be

None of these
√(T/3m)
√(T/m)
√(T/2m)

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Machine Design
When a bolt is subjected to an external load, the stress induced in the bolt will be

Any one of these
Tensile stress
Combined tensile and shear stress
Shear stress

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Machine Design
The form factor of a helical gear __________ with the increase in the helix angle.

Increases
None of these
Decreases
Remains constant

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Machine Design
A metal pipe of 1 m diameter contains a fluid having a pressure of 1 N/mm². If the permissible tensile stress in the metal is 20 N/mm², then the thickness of the metal required for making the pipe will be

25 mm
5 mm
15 mm
10 mm

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