Power Systems
The sequence components of the fault current are as follows : Ipositive = j1.5 pu, Inegative = − j0.5 pu, Izero = − j pu Which fault is this?

  LLLG.
  LLG.
  LL.
  LG.

ANSWER DOWNLOAD EXAMIANS APP

Power Systems
In coal fired thermal power stations, what are the electrostatic precipitators used for?

All of these
 To remove dust particles setting on the bus bar conductors in the station switch yard
 To keep the air heaters clean
 To collect the dust particles from the flue gases

ANSWER DOWNLOAD EXAMIANS APP

Power Systems
In a biased differential relay the bias is defined as the ratio of

  operating coil current and restraining coil current.
  number of turns of restraining and operating coil.
  fault current and restraining coil current.
  fault current and operating coil current.

ANSWER DOWNLOAD EXAMIANS APP

Power Systems
The modern trend in electric power generation

  none of above.
 to have large number of small size thermal plants located at different places.
 to have large size thermal plant located near coal fields.
 to have large size thermal plants near load centre.

ANSWER DOWNLOAD EXAMIANS APP
MORE MCQ ON Power Systems