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Machine Design

Machine Design
Crushing resistance required to crush the rivet per pitch length is

(p - d) t.σc
p.t.σc
n.d.t.σc
p.d.σc

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Machine Design
In a flange coupling, the keys are staggered at __________ along the circumference of the shafts in order to divide the weakening effect caused by key ways.

90°
180°
135°
160°

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Machine Design
According to maximum normal stress theory, the maximum normal stress in the shaft is

(1/2) × √(σ² × 4τ²)
√(σ² × 4τ²)
σ + √(σ² × 4τ²)
(1/2) × [σ + √(σ² × 4τ²)]

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Machine Design
The stretching in a belt can be controlled by __________ the stress in the belt.

Both A and B
None of these
Reducing
Increasing

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Machine Design
Which of the following pipe joints would be suitable for pipes carrying steam?

Threaded
Bell and spigot
Expansion
Flanged

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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)

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

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