The main advantage of using fractional pitch winding is to refuce

due to fractional pitch EMF can be approximately made into sine wave
losses due to harmonics reduced
saving in conductor material
mechanical strength of coil is increased.

Transposition of transmission line is done to

The corona effect can be minimized by increasing

Corona can be reduced by using large size of conductor, bundle conductor and hollow conductor.

Due to skin effect

Skin Effect:
tendency of the current to crowd near the conductor surface.

Skin effect is proportional to frequency, conductor diameter and permiability.
Skin effect increases effective resistance of conductor.
In DC, no skin effect.

Which of the following correctly represents the sequence of operations of isolator, circiut breaker and earthing switch while opening a circuit?

The transient stability of a power system can be improved by