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Transformers and induction motors require kvar or consumes kvar where as
capacitor banks will produces kvar. If there are no capacitor banks the
generator will supplies kvar to the induction motors. Due to this power
factor will reduces and current drawn from the generator will be more.
If we install capacitor banks to supply the required kvar to induction
motor then the kvar supplied from the generator will reduces and power
factor will increases. Due to this current will reduces and losses will
also reduces.By short circuiting the secondary and start increasing the primary voltage then up to saturation of transformer core secondary current increases with primary current but after the core saturates even though we increase primary current by increasing primary voltage the secondary current will not increases.
Current is nothing but it is flow of electrons. If 6.24 x 1018 electrons flows a reference point in 1 second then it is said that 1 ampere current was flown.
