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Machine Design

Machine Design
Taper usually provided on cotter is

1 in 40
1 in 24
1 in 10
1 in 5

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Machine Design
Maximum principal stress theory is applicable for

Elastic materials
Brittle materials
All of these
Ductile materials

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Machine Design
The coefficient of friction in belt drive depends upon

Materials of belt and pulley
Material of pulley
Belt velocity
Material of belt

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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 + 2εl
2εc + εl
εc + εl²
εc² + εl

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Machine Design
The smallest diameter of an external or internal screw thread is known as

None of these
Major diameter
Minor diameter
Pitch diameter

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Machine Design
Eye bolts are used for

Lifting and transportation of machines and cubicles
Transmission of power
Foundation purposes
Absorbing shock and vibrations

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