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Machine Design

Machine Design
In a marine flange coupling, the pitch circle diameter of bolts is taken as

1.2 d
1.6 d
2 d
2.5 d

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

None of these
Remains constant
Decreases
Increases

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Machine Design
The edges of a boiler plate are bevelled to an angle of

30°
60°
45°
80°

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Machine Design
In helical bevel gearing, the axes of shafts are __________ and the teeth are curved.

Intersecting and non-parallel
Non-intersecting and non-parallel
None of these
Intersecting

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Machine Design
When a metal or alloy is cold worked,

It is worked below recrystallization temperature
None of these
Its hardness and strength increases
Both (A) and (B)

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Machine Design
The application of third type levers is found in

Handle of a hand pump
Lever of a loaded safety valve
Hand wheel of a punching press
A pair of tongs

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