Question

What is the output voltage of the transformer with 380 primary turns, 1290 secondary turns, 120 V input voltage, and 18.0 A output current, assuming 100% efficiency?

a) 440 V
b) 306 V
c) 156 V
d) 45 V

Answer 1

The output voltage of the transformer, considering 380 primary turns, 1290 secondary turns, and 120 V input, is 440 V.

Step-by-step explanation:

To calculate the output voltage of the transformer, we can use the formula: Output Voltage = (Secondary Turns / Primary Turns) times Input Voltage. Plugging in the values: Output Voltage = (1290 / 380) times 120 V, Output Voltage ≈ 410 V This assumes 100% efficiency, reflecting the step-up transformation of the electrical signal in the secondary coil compared to the primary coil, amplifying voltage while maintaining current consistency. Therefore, the correct answer is Option A) 440 V.