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Machine Design

Machine Design
According to I.B.R., the thickness of the boiler shell should not be less than

5 mm
4 mm
7 mm
6 mm

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

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Machine Design
In testing a material for endurance strength, it is subjected to

Completely reversed load
Static load
Impact load
Dynamic load

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Machine Design
A transmission shaft includes

Counter shaft
All of these
Over head shaft
Line shaft

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Machine Design
The following type of nut is used with alien bolt

Castle nut
Any one of the above
Slotted nut
Hexagonal nut

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Machine Design
18/8 steel contains

18% nickel and 8% chromium
18% chromium and 8% nickel
18% vanadium and 8% nickel
18% nickel and 8% vanadium

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