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Machine Design

Machine Design
Crushing resistance required to crush the rivet per pitch length is

p.t.σc
(p - d) t.σc
n.d.t.σc
p.d.σc

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Machine Design
A taper key which fits half in the key way of the hub and half in the key way of shaft, is known as

Angular bevel gears
Internal bevel gears
Mitre gears
Crown Bevel gears

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Machine Design
The condition for maximum power transmission is that the maximum tension in the flat belt should be equal to(Where, Pc = tension in belt due to centrifugal force)

Pc/3
2 Pc
3 Pc
1 Pc

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Machine Design
A bolt is designed on the basis of __________ with a large factor of safety.

Direct shear stress
Direct tensile stress
Direct bending stress
Direct compressive stress

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Machine Design
A locking device extensively used in automobile industry is a

Ring nut
Sawn nut
Jam nut
Castle nut

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Machine Design
For hardening alloy steels and high speed steels, they are heated to

1100 to 1300°C
500 to 600°C
700 to 900°C
1300 to 1500°C

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