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Hydraulics

Q1: If the pressure at the inlet of a pipe is 90 kg/cm2 and pressure drop over the pipe line is 10 kg/cm2, the efficiency of transmission, is

A 66.6%

B 77.7%

C 55.5%

D 88.8%

ANS:D - 88.8%

The efficiency of transmission in a pipeline can be calculated using the formula: Efficiency=Pressure dropInlet pressure×100%Efficiency=Inlet pressurePressure drop​×100% Given:

  • Inlet pressure = 90 kg/cm²
  • Pressure drop over the pipeline = 10 kg/cm²
We can substitute these values into the formula: Efficiency=1090×100%=19×100%=11.1%Efficiency=9010​×100%=91​×100%=11.1% Therefore, the efficiency of transmission is 11.1%. It seems there was a mistake in the options provided, as none of them matches the calculated efficiency. The correct efficiency is 11.1%.



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