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Machine Design

Machine Design
The stress in the threaded part of the bolt will be __________ as compared to the shank.

Same
None of these
Lower
Higher

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Machine Design
When a nut is tightened by placing a washer below it, the bolt will be subjected to following type of loads

Compression
Tension
Shear
Combined loads

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Machine Design
The longitudinal joint in boilers is used to get the required

Length and diameter of boiler
Efficiency of boiler
Diameter of boiler
Length of boiler

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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

15 mm
10 mm
5 mm
25 mm

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Machine Design
Resistance to fatigue of a material is measured by

Elastic limit
Coefficient of elasticity
Endurance limit
Young's modulus

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Machine Design
A self locking screw has

Course threads
Hole for inserting split pin
Fine threads
Coefficient of friction is greater than tangent of load angle

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