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MACHINE DESIGN

Machine Design
Deep groove ball bearings are used for

Heavy thrust load only
Small angular displacement of shafts
Radial load at high speed
Combined thrust and radial loads at high speed

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Machine Design
A compound cylinder with inner radius 50 mm and outer radius 70 mm is made by shrinking one cylinder on to the other cylinder, the junction radius is 60 mm and the junction pressure is 1.1 N/mm². The maximum hoop stress developed in the inner cylinder is

7.2 N/mm² tension
7.2 N/mm² compression
3.6 N/mm² tension
3.6 N/mm² compression

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Machine Design
A backing ring is used inside the pipe joint when making a

Fillet weld
Butt weld
Socket weld
Sleeve weld

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Machine Design
Oil in journal bearing should be applied at the point where load is

Any one of the above
Average
Maximum
Nil or lightest

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Machine Design
Shear stress theory is applicable for

Ductile materials
Brittle materials
All of these
Elastic materials

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