Power Systems
For a fixed value of complex power flow in a transmission line having a sending end voltage V, the real power loss will be proportional to

 V.
 1 / V.
  1 / V2.
 V2.

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Power Systems
Half life is defined as

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

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