Thyristors Questions and Answers

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Thyristors are semiconductor devices widely used for controlling high-power electrical applications such as rectifiers, converters, and AC regulators. Understanding thyristor operation and characteristics is vital for candidates appearing in GATE, DRDO, and JE-level electrical exams. Our set of Thyristors questions with answers provides detailed aptitude questions and answers to help you master triggering methods, turn-off techniques, and VI characteristics. Designed for aptitude test practice online, this content enables students to strengthen their conceptual clarity and score high in technical competitive exams and interviews.

Thyristors

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21. Thyristors are 4-layer semiconductor devices.

  • TRUE
  • FALSE
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22. The diac can conduct current in either direction and is turned on when a breakover voltage is exceeded.

  • TRUE
  • FALSE
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23. The triac is similar to an SCR, but it provides conduction for both halves of the ac wave.

  • TRUE
  • FALSE
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24. The triac can be turned on or off by a pulse at the gate.

  • TRUE
  • FALSE
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