Answer the following statement(s) true (T) or false (F)
1. The power ratings for oscillators range from a few milliwatts to megawatts and their frequency from a few cycles to several billion cycles per second.
2. Saturating the transistor causes the collector-emitter voltage to drop to between .04 and .03 volts.
3. A great advantage of drives using IGBTs is the fact that SCRs are generally used in the power supply.
4. Due to the problem of excessive voltage spikes caused by IGBT drives, some manufacturers produce a motor that is “inverter rated.”
5. Variable frequency drives intended to control motors under 500 Hp generally use SCRs or GTOs.
1. True
2. True
3. False
4. True
5. False
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