Tata Power Senior Officer Interview Questions and Answers

Magnetic core balance test is done to measure the balance of magnetic cores in a transformer.

• The test is performed by injecting a current into one winding of the transformer and measuring the voltage induced in the other winding.

• The test is repeated for each winding of the transformer.

• The results are compared to determine if the magnetic cores are balanced.

• If the magnetic cores are not balanced, it can lead to increase...read more

Power factor is a measure of how effectively electrical power is being used and it affects the efficiency of electrical systems.

• Power factor is the ratio of real power (kW) to apparent power (kVA) in an electrical system.

• It indicates how much of the total power is being used for useful work.

• A power factor of 1 means all the power is being used effectively, while a power factor less than 1 indicates inefficiency.

• Low pow...read more

Active power is the actual power consumed by a device or system.

• Active power is measured in watts (W).

• It is the power that is actually doing the work.

• It is the product of voltage and current in an AC circuit.

• It is also known as real power.

• For example, a 100W light bulb consumes 100W of active power.