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The efficiency of power transmission through pipe is (where H = Total supply head, and hf = Head lost due to friction in the pipe)?

LohaHridoy
  1. (H - hf )/H
  2. H/(H - hf )
  3. (H + hf )/H
  4. H/(H + hf )

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Answer: Option 1

Let'

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According to Darcy's formula, the loss of head due to friction in the pipe is (where f = Darcy's coefficient, l = Length of pipe, v = Velocity of liquid in pipe, and d = Diameter of pipe)?

Answer: Option 4 Let'

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The loss of head due to viscosity for laminar flow in pipes is (where d = Diameter of pipe, l = Length of pipe, v = Velocity of the liquid in the pipe, μ = Viscosity of the liquid, and w = Specific weight of the flowing liquid)?

Answer: Option 4 Let'

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Various efficiencies of a centrifugal pump are related as (where, ηm = mechanical efficiency ηv = volumetric efficiency. ηma = manometric efficiency ηo = overall efficiency)?

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Consider two pipes of same length and diameter through which water is passed at the same velocity. The friction factor for rough pipe is f₁ and that for smooth pipe is f₂. Pick out the correct statement.?

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Efficiency of power transmission (η) through a circular pipe is given by (ht - hf)/ht, which has a maximum value of __________ percent.?

Answer: Option 3 Let'

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