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Machine Design

Machine Design
Euler’s formula for a mild steel column is not valid if the slenderness ratio is

100
120
60
90

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

Same
Higher
None of these
Lower

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Machine Design
The acme threads are usually found on

Railway carriage couplings
Spindles of bench vices
Screw cutting lathes
Feed mechanism of machine tools

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Machine Design
In order to remove internal stresses produced by hardening the steel, the process usually adopted is

Tempering
Normalizing
Spheroidizing
Annealing

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Machine Design
A localized compressive stress at the area of contact between two members is known as

Bending stress
Bearing stress
Shear stress
Tensile stress

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Machine Design
Which of the following material has the maximum ductility?

Aluminium
Copper
Mild steel
Zinc

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