Podcast
Questions and Answers
What is the main purpose of a Silicon Controlled Rectifier (SCR)?
How many terminals does a Silicon Controlled Rectifier have?
What type of semiconductor layers make up a Silicon Controlled Rectifier?
Which of the following terms is often used interchangeably with Silicon Controlled Rectifier?
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Who led the team of power engineers that developed the SCR?
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What are the three terminals of a silicon controlled rectifier?
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In which region of the V-I characteristics does the SCR not conduct electric current?
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Which junctions are forward biased in the Forward Blocking Mode?
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What happens when the SCR reaches the forward breakdown voltage (VBF)?
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What happens when a positive voltage is applied to the gate terminal?
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What defines the reverse blocking region in an SCR?
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In which mode does the SCR exhibit high resistance and prevents current flow despite being forward biased?
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What is the primary role of a TRIAC?
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How does a TRIAC operate when MT2 is at a positive potential relative to MT1?
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What phenomenon allows the SCR to conduct current during Forward Conducting Mode?
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What is the role of the external resistance in a TRIAC circuit?
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In which modes does a TRIAC conduct?
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What is the primary characteristic of a DIAC?
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Which of the following is a disadvantage of using a TRIAC?
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What is a primary application of a DIAC?
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Which statement about the V-I characteristics of a DIAC is true?
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How does a DIAC switch from off-state to on-state?
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What happens to junction J2 during forward voltage triggering when the forward break over voltage is reached?
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Which triggering method uses a light source to activate the SCR?
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What is a critical drawback of using forward voltage triggering in SCR operation?
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Which mode of SCR operation occurs when the anode is negative and the cathode is positive?
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What triggers the SCR in the dt/dv method?
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What phenomenon may occur due to temperature increase in an SCR?
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Which SCR triggering method is considered the most reliable?
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What should happen to the gate voltage after the SCR is turned ON?
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What is the impact of spurious voltage spikes on SCRs?
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What is the primary function of a DIAC in a circuit?
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Which statement accurately describes the operation of a DIAC?
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How does the two transistor analogy of SCR work?
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What happens to the SCR after it is triggered?
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What characteristic of DIAC helps in reducing harmonics in a system?
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Which of the following is a disadvantage of using a DIAC?
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What role does the gate current play in SCR operation?
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What does the regeneration process in SCR do after triggering?
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Which factor is critical for the reliable turn-on of an SCR?
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