Power Systems
A thermal power plant is being supplied with coal having much more ash content than that for which it was designed. Which of its following units needs major modifications

 Cooling tower.
 Pulversing unit.
 Ash handling unit.
 Condenser.

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

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

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