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Question

The typical switching speed of GTOs is

This question was previously asked in
RRB NTPC 2024 Undergraduate CBT 1 Question Paper (29-Aug-2025) (Shift 1)
The correct answer is

relatively slow

The correct answer is relatively slow.

GTOs, or Gate Turn-Off thyristors, are a type of thyristor that can be turned off by a negative gate current. While they offer advantages such as high power handling capabilities and the ability to be turned off, their switching speeds are comparatively slower than other semiconductor switching devices like MOSFETs or IGBTs. This relatively slow switching speed is a key characteristic that distinguishes GTOs from other power semiconductor devices. The switching speed is limited by factors like the device's internal charge storage and the time it takes for the gate current to effectively reverse the device's conduction state.

Therefore, options 1, 2, and 3 are incorrect. While their switching speed can be considered "high" in some contexts, when compared to other modern switching devices, they are relatively slow.

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Similar Questions

  1. Which of the following characteristics of a GTO is most important for its use in high-power switching applications?

  2. Which of the following best describes the working of a TRIAC?

  3. If a TRIAC used to trigger using a negative gate voltage, in which of the following Quadrants would it be

  4. In a motor speed control using TRIAC and UJT, the potentiometer controls:

  5. In Silicon Controlled Rectifier (SCR):

Important Questions from Thyristors

  1. _______ exhibit a regenerative switching characteristic.

  2. The minimum anode current, which must flow through the SCR in order for it to stay ON initially after the gate signal is removed, is known as ______.

  3. What is the maximum firing angle achievable using resistance-capacitance triggering of SCR?

  4. Which one of the following can be used in the lighting system for power interruptions?

  5. Which of the following characteristics of a GTO is most important for its use in high-power switching applications?

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