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Machine Design

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

20
25
10
15

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Machine Design
The spring mostly used in gramophones is

Conical spring
Helical spring
Flat spiral spring
Volute spring

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Machine Design
When the pulley or other mating piece is required to slide along the shaft, a __________ sunk key is used.

Parallel
Rectangular
None of these
Square

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Machine Design
The centre to centre distance between two consecutive rivets in a row, is called

Pitch
Margin
Back pitch
Diagonal pitch

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Machine Design
Auto frettage is the method of

Calculating stresses in thick cylinders
Joining thick cylinders
Pre-stressing thick cylinders
Increasing the life of thick cylinders

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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

2εc + εl
εc + εl²
εc + 2εl
εc² + εl

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