Power Systems
Proximity effect depends on

 frequency
 relative permeability
All of these
 distance between the conductors

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Power Systems
The advantage of hydro electric power station over thermal power station is

 the initial cost of hydro electric power station is low
 the operation cost of hydro electric power station is low
 hydro electric station can be constructed at the place where the energy is required
 hydro electric power station can supply the power throughout the year

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Power Systems
Gas coolled reactor

 use coolant at pressure of 14-28 Kg/cm2 and at temperature of 700°-800° c.
 use CO2. or helium as coolant and graphite the moderator.
 use heavy water as coolant as well as moderator.
  both B and C.

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