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The quality of vapour at the exit of nozzle _______ due to nozzle friction.


1. increases
2. decreases
3. does not change
4. unpredictable 

1 Answer

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Best answer
Correct Answer - Option 1 : increases

Explanation:

The effects of steam nozzle friction are:

  • Reduction in enthalpy drop.
  • Increase in the specific volume
  • Steam is reheated i.e. quality of vapour at the exit is improved means dryness fraction increases.
  • The decrease in mass flow rate
  • Reduction in exit velocity.

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