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Machine Design

Machine Design
In Vickers hardness testing, the pyramid indentor apex is

152°
40°
122°
136°

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Machine Design
The resistance to fatigue of a material is measured by

Elastic limit
Ultimate tensile strength
Endurance limit
Young's modulus

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Machine Design
Which of the following coupling is used to connect two shafts which have both lateral and angular misalignment?

Universal coupling
All of these
Oldham coupling
Bushed pin type coupling

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Machine Design
The included angle for the British Association thread is

60°
47.3°
29°
55°

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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
εc + 2εl
εc² + εl
2εc + εl

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Machine Design
The value of stress concentration factor depends upon

Material and geometry of the part
Geometry of the part
Material of the part
None of these

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