How do you find the equivalent resistance of a transformer?

How do you find the equivalent resistance of a transformer?

In fig -2 shows , The secondary resistance is transferred to primary winding and secondary winding is resistance less. And the total resistance at primary winding is ( R1 + R2/K2 ) which is known as the equivalent resistance of the transformer as referred to primary .

What is meant by the equivalent resistance of a transformer how may it be calculated in primary terms in secondary terms?

The primary resistance referred to the secondary is denoted by R1′ and can be calculated by the formula given below. R1′ = K2R1. The equivalent resistance of transformer referred to the secondary is represented by R02. Therefore, R02 = R2 + R1′ = R2+ K2R1.

When voltage is transformed from primary to secondary then it is multiplied by?

This discussion on When voltage is transformed from primary to secondary then it is _____. a) multiplied by K2b)multiplied by Kc) divided by K2d)divided by KCorrect answer is option ‘B’.

What is the transformation ratio?

The transformation ratio is defined as the ratio of the secondary voltage to primary voltage. And Turns Ratio would be the number turns of the primary winding to the secondary winding (edit: those were swapped originally).

What is secondary voltage in transformer?

Secondary voltage is the coil winding supplying the output voltage. The output voltage of a transformer varies some with varying load resistances, even with a constant voltage input.

What is a secondary winding?

A secondary winding is the winding of a transformer that receives its energy by electromagnetic induction from the primary winding. A secondary winding is the winding of a transformer that receives its energy by electromagnetic induction from the primary winding.

Why CT secondary should be shorted?

Unless a burden (i.e. meters, relays, etc.) is connected to the CT, current transformers should always be shorted across the secondary terminals. The reason is very high voltages will be induced at the terminals. Think of the CT as a transformer, with a 1 turn primary and many turns on the secondary.

What will happen if the secondary winding is shorted?

Shorted Winding A shorted primary causes a very large primary current. Usually either the source or the transformer will burn out unless it is protected by a fuse or circuit breaker. If a short is suspected, disconnect the transformer from the source and test the primary with an ohmmeter.