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Machine Design

Machine Design
Screws used for power transmission should have

Very fine threads
Strong teeth
High efficiency
Low efficiency

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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

5 mm
25 mm
10 mm
15 mm

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Machine Design
A V-belt designated as B 4430 LP has

4430 mm as diameter of large pulley
4430 mm as diameter of small pulley
4430 mm as centre distance between pulleys
4430 mm as nominal pitch length

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Machine Design
The property of a material which enables it to resist fracture due to high impact loads is known as

Toughness
Endurance
Strength
Elasticity

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Machine Design
The expansion joint is mostly used for pipes which carry steam at __________ pressures.

Low
High
Medium
None of these

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Machine Design
In radial cams, the follower moves

In a direction perpendicular to the cam axis
In any direction irrespective of cam axis
Along the cam axis
In a direction parallel to the cam axis

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