Question 444Electricity & Electronics - Assistant Engineer

The correct answer is D) 220 volts AC. When the supply voltage is 220 volts at 60 Hz, the operating voltage of the motor controller control circuit illustrated in figure "A" of the illustration EL-0011 would be 220 volts AC. This is because the control circuit is typically designed to operate directly from the same AC power source that supplies the main motor, without any intermediate voltage conversion. The other options are incorrect because 110 volts DC and 110 volts AC would not match the 220 volts AC supply, and 220 volts DC would not be the typical operating voltage for a motor controller control circuit.