Question 101Electricity & Electronics - 1st Asst/Chief
70% to passThe apparent power supplied to a motor is six kilovolt amps at 120 volts. What is the impedance of the motor?
A0.05 ohms
B0.50 ohms
C2.40 ohms
D24.00 ohms
AI Explanation
The correct answer is C) 2.40 ohms. To calculate the impedance of the motor, we can use the formula for apparent power (S) which is given by the equation S = VI, where V is the voltage and I is the current. Rearranging the equation, we can solve for the impedance (Z) as Z = V/I. Given the apparent power is 6 kilovolt amps (6,000 VA) at 120 volts, we can calculate the current as I = S/V = 6,000/120 = 50 amps. Plugging this into the impedance equation, we get Z = V/I = 120/50 = 2.40 ohms. The other answer choices are incorrect because they do not correctly calculate the impedance using the given information.
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