4. Indicate if the power thyristor will be on or off under the following conditions: The thyristor was reverse biased, then a current pulse was injected into a. the gate. The thyristor is b. The thyristor was reverse biased, a current pulse was injected into the gate, then the thyristor was forward biased. The thyristor is The thyristor was forward biased, then a current pulse was injected into the gate. The thyristor is d. The thyristor was forward biased, a current pulse was injected into the gate, then the thyristor was reverse biased. The thyristor is 5. Why are two thyristors required for ac switching?

EBK ELECTRICAL WIRING RESIDENTIAL
19th Edition
ISBN:9781337516549
Author:Simmons
Publisher:Simmons
Chapter19: Special-purpose Outlets-water Pump, Water Heater
Section19.2: Water Heater Branch Circuit
Problem 22R
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4. Indicate if the power thyristor will be on or off under the following conditions:
The thyristor was reverse biased, then a current pulse was injected into
the gate.
a.
The thyristor is
b. The thyristor was reverse biased, a current pulse was injected into the
gate, then the thyristor was forward biased.
The thyristor is
The thyristor was forward biased, then a current pulse was injected into
the gate.
The thyristor is
d. The thyristor was forward biased, a current pulse was injected into the
gate, then the thyristor was reverse biased.
The thyristor is
5. Why are two thyristors required for ac switching?
Transcribed Image Text:4. Indicate if the power thyristor will be on or off under the following conditions: The thyristor was reverse biased, then a current pulse was injected into the gate. a. The thyristor is b. The thyristor was reverse biased, a current pulse was injected into the gate, then the thyristor was forward biased. The thyristor is The thyristor was forward biased, then a current pulse was injected into the gate. The thyristor is d. The thyristor was forward biased, a current pulse was injected into the gate, then the thyristor was reverse biased. The thyristor is 5. Why are two thyristors required for ac switching?
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