Power Systems
A cable has the following characteristics, L = 0.201 µH/m and C = 196.2 pF/m. The velocity of wave propagation through cable is

 159.24 m/µs
 0.0312 m/s
 32 m/s
 159.24 m/s

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

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

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