Answer the following statement(s) true (T) or false (F)
1. Multispeed AC motors have been used to a great extent in the air conditioning field for many years.
2. Most transistor-controlled variable drives no longer employ insulated gate bipolar transistor (IGBT) transistors.
3. The output voltage to the motor is controlled by pulse width modulation (PWM).
4. The primary purpose of a variable frequency drive is to provide speed control for an AC motor.
5. Current limit controls set the ratio by which the voltage increases as frequency increases or decreases as frequency decreases.
1. TRUE
2. FALSE
3. TRUE
4. TRUE
5. FALSE
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