Answer the following statement(s) true (T) or false (F)

1. A frequency changer may be used to vary the speed of AC squirrel cage induction motors.
2. There is only one method used for one or more motors to obtain variable frequency from a fixed-frequency power
source.
3. Variable-frequency power drives are used on many different types of conveyor systems.
4. Assembly lines make use of variable-frequency power drives.
5. Variable pitch systems are among the lowest-cost methods of achieving variable speed.


1. TRUE
2. FALSE
3. TRUE
4. TRUE
5. TRUE

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