Power Systems
The steam power plant efficiency can be improved by

 burning large amount of coal.
  using high temperature and high pressure steam.
 decreasing the load on the plant.
 using large quantity of water.

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Power Systems
Half life is defined as

  the time required for one half of isotope to decay.
 the time required for full of atoms in a specimen disintegrate.
 the time required to spiliting of a heavy nucleus.
 none of above.

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Power Systems
An impulse turbine

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

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