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Machine Design

Machine Design
The suitable material for belt used in flour mill is

Canvas or cotton duck
Balata gum
Leather
Rubber

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Machine Design
The cold working of metals is carried out __________ the recrystallization temperature.

Below
At
Above
None of these

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Machine Design
When two non-intersecting and non-coplanar shafts are connected by gears, the arrangement is known as

Spur gearing
Bevel gearing
Helical gearing
Spiral gearing

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Machine Design
Wahl's stress factor __________ very rapidly as the spring index decreases.

Increases
Decreases
None of these
Remain same

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Machine Design
Two shafts will have equal strength, if

Twisting moment of both the shafts is same
Angle of twist of both the shafts is same
Material of both the shafts is same
Diameter of both the shafts is same

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Machine Design
The initial tension (in newtons) in a bolt used for making a fluid tight joint like steam engine cover joints, is calculated by the relation (where d = Nominal diameter of bolt in mm)

2840 d
1420 d
2080 d
1680 d

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