Question 442Electricity/Electronics - Assistant Engineer70% to pass
A 125 volt DC motor is rated at 10 kW. What is the current rating of the motor?
AI Explanation
The correct answer is D) 80 amps.
To calculate the current rating of a DC motor, we can use the formula: Power (in watts) = Voltage (in volts) x Current (in amps). Given that the motor is rated at 10 kW (10,000 watts) and 125 volts DC, we can rearrange the formula to solve for the current: Current = Power / Voltage, which gives us 10,000 watts / 125 volts = 80 amps.
The other options are incorrect because:
A) 4.6 amps is too low for a 10 kW motor at 125 VDC.
B) 8.0 amps is also too low for a 10 kW motor at 125 VDC.
C) 46.2 amps is too low for a 10 kW motor at 125 VDC.
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