Power Systems
Objectives of power system is/are

 Rated voltage and frequency has to be supplied to the consumers
 nether 1 nor 2
 Cost of electrical energy per KWh is to be minimum
 both 1 and 2

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Power Systems
An impulse turbine

 makes use of a draft tube.
  operates by initial complete conversion to kinetic energy.
 always operates submerged.
 is most suited for low head and high discharge power plants.

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