What is the turns ratio of a 50 kva transformer rated at 7200 - 120/240?

To determine the turns ratio of a transformer, one focuses on the primary and secondary voltages. For a transformer rated at 7200 volts (primary) and 120/240 volts (secondary), you can use the voltage ratios to calculate the turns ratio.

The primary voltage is 7200 volts, and the secondary voltage in this case is typically considered to be the higher of the two secondary ratings, which is 240 volts. The formula for the turns ratio is the primary voltage divided by the secondary voltage.

Calculating the turns ratio:

Turns Ratio = Primary Voltage / Secondary Voltage

Substituting in the values:

Turns Ratio = 7200 V / 240 V

This simplifies to:

Turns Ratio = 30

Thus, the turns ratio of the transformer is 30 to 1. This indicates that for every 30 turns on the primary side, there is 1 turn on the secondary side, which aligns with the principles of electromagnetic induction and transformer operations.