Typical range of thyristor turn OFF time is

Electrical Engineering XYZ MCQs

Typical range of thyristor turn OFF time is:

  1. 3 – 100 µs
  2. 3 – 10 µs
  3. 3 – 500 µs
  4. 3 – 50 µs

Correct answer: 1. 3 – 100 µs

Explanation: A thyristor is a semiconductor device used for controlling large amounts of electrical power. Turn-off time refers to the time taken by the thyristor to switch off once the gate signal is removed. It is a crucial parameter in the operation of thyristors, especially in applications where precise timing is required.

The typical range of turn-off time for thyristors varies depending on the specific type and application. However, in general, the turn-off time for thyristors typically falls within the range of microseconds (µs).

Out of the options provided:

  • 3 – 100 µs is the most reasonable range as it covers a broad spectrum of possible turn-off times for thyristors.
  • 3 – 10 µs might be too narrow, as some thyristors may have turn-off times exceeding 10 µs.
  • 3 – 500 µs seems too wide as it includes turn-off times that are much longer than typical for most thyristors.
  • 3 – 50 µs could be considered, but it may exclude some thyristors with turn-off times closer to 100 µs.

Therefore, the most appropriate choice is 3 – 100 µs, as it encompasses the typical range of thyristor turn-off times.

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