The output of a turbine is 300 kW and efficiency is 25%. The input power is

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ISRO IPRC Technical Assistant Mechanical 28 Aug 2016 Official Paper
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  1. 600 kW
  2. 1200 kW
  3. 900 kW
  4. 1500 kW

Answer (Detailed Solution Below)

Option 2 : 1200 kW
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Detailed Solution

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Concept:

The efficiency of the turbine is given by;

\(η_T =\frac{Output\ Power}{Input\ Power}\)

Calculation:

Given:

ηT = 25% = 0.25, Output Power = 300 kW

\(0.25 =\frac{300}{Input\ Power}\)

\(Input\ Power =\frac{300}{0.25}\)

Input Power = 1200 kW

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