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Machine Design

Machine Design
The strength of the unriveted plate (P) per pitch length is equal to

p.t.σt
p.d.σt
(p - d) σt
(p - d) t.σt

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Machine Design
The power transmitted by belt drive depends upon

All of these
Arc of contact
Belt velocity
Initial belt tension

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

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Machine Design
The coefficient of friction in belt drive depends upon

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

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Machine Design
The shock resistance of steel is increased by adding

Cobalt and molybdenum
Nickel and chromium
Chromium
Nickel

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Machine Design
The centre distance between two meshing involute gears is equal to

Difference of base circle radii/cosφ
Sum of base circle radii/cosφ
Difference of pitch circle radii/cosφ
Sum of pitch circle radii/cosφ

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