Power Systems
Peterson coil is used in case of transmission line for

 reduce ferranti effect
 compensation of arcing grounds
 increase the voltage level
 improve power factor

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Power Systems
Half life is defined as

 none of above.
  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.

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