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Machine Design

Machine Design
In a marine flange coupling, the thickness of flange is taken as

3d/4
d/4
d/3
d/2

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Machine Design
The bending stress in a curved beam is

Zero at the point other than centroidal axis
Zero at the centroidal axis
Maximum at the neutral axis
None of these

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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

25 mm
15 mm
10 mm
5 mm

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Machine Design
Allen bolts are

Provided with hexagonal depression in head
Self locking bolts
Used in aircraft application
Designed for shock load

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Machine Design
The period during which the cam follower remains at rest, when cam moves, is known as

Idle period
Dwell period
Fixed period
Constant period

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Machine Design
The centre to centre distance between two consecutive rivets in a row, is called

Diagonal pitch
Pitch
Back pitch
Margin

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