What are some examples of thyristors?
What will be an ideal response?
Thyristors include such devices as the SCR, the triac, the diac, and the UJT.
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Very small pupils are a symptom of _____.
a. heat stroke b. frostbite c. hypothermia d. heat exhaustion
In a three-phase, four wire system, the conductor that is most likely to be affected by nonlinear loads is the _____.
a. ground conductor b. neutral conductor c. phase A conductor d. phase B conductor
En los sistemas divididos de aire acondicionado, ¿cuál de los siguientes componentes se ubica en el interior?
a. La bobina de condensación b. El compresor c. El carburador d. El serpentín evaporador
Answer the following statement(s) true (T) or false (F)
1. The wound-rotor induction motor and the squirrel-cage induction motor both were developed for variable speed applications. 2. To minimize the starting surge of current to a wound-rotor induction motor, insert the full resistance of the speed controller in the rotor circuit. 3. If the full resistance of the speed controller is inserted into the rotor circuit when the motor is running, the rotor current decreases and the motor slows down. 4. As resistance is removed from the rotor circuit, the rotor speed will continue to increase until its speed matches the synchronous speed of the field developed by the stator windings. 5. The starting torque output of a wound-rotor induction motor is poor when all resistance is removed from the rotor circuit.