Power Systems
IF the time of operation of a relay for unity TMS is 10 sec then the time of operation for 0.5 TMS is

  5 sec.
 20 sec.
 10 sec.
 none of these.

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

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

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