A 50kVA at 7200 volt transformer draws how many amps at full load?

A 50kVA at 7200 volt transformer draws how many amps at full load?

• A. 3.47 amps
• B. 6.94 amps
• C. 10.15 amps
• D. 12.5 amps

Answer: (B)

To determine how many amps a transformer draws at full load, you can use the formula that relates power (in kilovolt-amperes or kVA), voltage (in volts), and current (in amps). The formula is: \[ \text{Power (kVA)} = \frac{\text{Voltage (V)} \times \text{Current (A)}}{1000} \] In this instance, the transformer has a power rating of 50 kVA and operates at 7200 volts. Rearranging the formula to solve for current gives: \[ \text{Current (A)} = \frac{\text{Power (kVA)} \times 1000}{\text{Voltage (V)}} \] Substituting the values into the equation: \[ \text{Current (A)} = \frac{50 \times 1000}{7200} \] Calculating this results in: \[ \text{Current (A)} = \frac{50000}{7200} \approx 6.94 \text{ amps} \] This means that at full load, the transformer draws approximately 6.94 amps, which aligns with the given correct answer. This calculation is essential for understanding

To determine how many amps a transformer draws at full load, you can use the formula that relates power (in kilovolt-amperes or kVA), voltage (in volts), and current (in amps). The formula is:

[ \text{Power (kVA)} = \frac{\text{Voltage (V)} \times \text{Current (A)}}{1000} ]

In this instance, the transformer has a power rating of 50 kVA and operates at 7200 volts. Rearranging the formula to solve for current gives:

[ \text{Current (A)} = \frac{\text{Power (kVA)} \times 1000}{\text{Voltage (V)}} ]

Substituting the values into the equation:

[ \text{Current (A)} = \frac{50 \times 1000}{7200} ]

Calculating this results in:

[ \text{Current (A)} = \frac{50000}{7200} \approx 6.94 \text{ amps} ]

This means that at full load, the transformer draws approximately 6.94 amps, which aligns with the given correct answer. This calculation is essential for understanding