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Machine Design

Machine Design
The ratio of endurance limit in shear to the endurance limit in flexure is

0.33
0.5
0.4
0.55

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Machine Design
A circular shaft can transmit a torque of 5 kN-m. If the torque is reduced to 4 kN-m, then the maximum value of bending moment that can be applied to the shaft is

3 kN-m
4 kN-m
1 kN-m
2 kN-m

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Machine Design
Which of the following pipe joints would be suitable for pipes carrying steam?

Expansion
Flanged
Threaded
Bell and spigot

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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

5 mm
25 mm
10 mm
15 mm

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Machine Design
Fabric belts are used in industrial applications because

None of these
They are unaffected by moisture and humidity
They can work at high temperature
They are cheap

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Machine Design
When a load W is applied suddenly on a bar of cross-sectional area A, the stress induced in the bar will be

2W/A
W/2A
W/A
3W/A

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