Power Systems
Half life is defined as

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

ANSWER DOWNLOAD EXAMIANS APP

Power Systems
A thermal power station needs space

 less than that required by a gas turbine power plant of same output.
 less than that required by atomic power station of the same output.
 less than that required by the diesel power station of same output.
  less than that required by hydro-power station of same capacity.

ANSWER DOWNLOAD EXAMIANS APP

Power Systems
The incremental fuel costs for two generating units G1 and G2 are given by Ic1 = 25 + 0.2 PG1 and Ic2 = 32 + 0.2 PG2, where PG1 and PG2 are real powers generated by the units. The economic allocation for a total load of 250 MW, neglecting transmission loss, is given by

 PG1 = 125 MW and PG2 = 125 MW
 PG1 = 109.75 MW and PG2 = 140.25 MW
 PG1 = 100 MW and PG2 = 150 MW
 PG1 = 142.5 MW and PG2 = 107.5 MW

ANSWER DOWNLOAD EXAMIANS APP