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Machine Design

Machine Design
The following type of nut is used with alien bolt

Any one of the above
Slotted nut
Hexagonal nut
Castle nut

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Machine Design
A flanged pipe joint will be a leak-proof joint, if the circumferential pitch of the bolts is (where d = Diameter of bolt hole)

Greater than 30d
Equal to inside diameter of pipe
Less than 20d
Between 20d and 30d

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Machine Design
If the centre distance of the mating gears having involute teeth is varied within limits, the velocity ratio

Increases
Remains unchanged
None of these
Decreases

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Machine Design
In standard taper roller bearings, the angle of taper of outer raceway is

8°
5°
15°
25°

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Machine Design
Fibrous fracture occurs in

Elastic material
Ductile material
Brittle material
Hard material

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Machine Design
Fabric belts are used in industrial applications because

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

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