- A. Changing anode voltage
- B. Changing gate voltage
- C. Reverse biasing the gate
- D. None of the above
Silicon Controlled Rectifiers
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In an SCR circuit, the angle of conduction can be changed by_____.
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If gate current is increased, then anode-cathode voltage at which SCR closes_____.
- A. Is decreased
- B. Is increased
- C. Remains the same
- D. None of the above
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An SCR is made of_____.
- A. Germanium
- B. Silicon
- C. Carbon
- D. None of the above
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An SCR has three terminals viz_____.
- A. Cathode, anode, gate
- B. Anode, cathode, grid
- C. Anode, cathode, drain
- D. None of the above
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An SCR is turned off by_____.
- A. Reducing anode voltage to zero
- B. Reducing gate voltage to zero
- C. Reverse biasing the gate
- D. None of the above
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An SCR is a solid state equivalent of_____.
- A. Triode
- B. Pentode
- C. Gas-filled triode
- D. Tetrode
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When SCR is OFF, the current in the circuit is_____.
- A. Exactly zero
- B. Small leakage current
- C. Large leakage current
- D. None of the above
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When SCR starts conducting, then ______ loses all control.
- A. Gate
- B. Cathode
- C. Anode
- D. None of the above
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An SCR is made of silicon and not germanium because silicon_____.
- A. Is inexpensive
- B. Is mechanically strong
- C. Has small leakage current
- D. Is tetravalent
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If firing angle in an SCR circuit is increased, the output_____.
- A. Remains the same
- B. Is increased
- C. Is decreased
- D. None of the above