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Machine Design

Machine Design
In a flange coupling, the bolts are subjected to

None of these
Tensile stress
Shear stress
Compressive stress

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Machine Design
Stress concentration factor is defined as the ratio of

Maximum stress to the endurance limit
Nominal stress to the maximum stress
Maximum stress to the nominal stress
Nominal stress to the endurance limit

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Machine Design
The pipe joint mostly used for pipes carrying water at low pressures is

Union joint
Socket joint
Spigot and socket joint
Nipple joint

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Machine Design
The circumferential and longitudinal strains in a cylindrical boiler under internal steam pressure are εc and εl respectively. The change in volume of the boiler cylinder per unit volume will be

εc + εl²
εc² + εl
2εc + εl
εc + 2εl

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

Spheroidizing
Tempering
Annealing
Normalizing

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Machine Design
According to Indian standards, total numbers of fundamental deviations are

10
25
20
15

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