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Machine Design

Machine Design
Whether any core is required in wire ropes

Rarely
No
Sometimes
Yes

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Machine Design
For a shoe brake, the equivalent coefficient of friction is equal to (where μ = Actual coefficient of friction, and θ = Semi-block angle)

2μ sinθ/(θ + sinθ)
4μ sinθ/(θ + sinθ)
4μ sinθ/(2θ + sin 2θ)
μ sinθ/(2θ + sin 2θ)

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Machine Design
In case of pressure vessels having open ends, the fluid pressure induces

Longitudinal stress
Shear stress
None of these
Circumferential stress

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

Diagonal pitch
Back pitch
Margin
Pitch

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Machine Design
The stress in the bar when the load is applied suddenly is __________ as compared to the stress induced due to gradually applied loads.

Four times
Same
Three times
Double

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Machine Design
A locking device extensively used in automobile industry is a

Castle nut
Ring nut
Sawn nut
Jam nut

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