An SCR is turned off when ________________?

Related Mcqs:

1. When an SCR is turned on, the voltage across it is about _____________?

   A. Zero
   B. 10 V
   C. 1 V
   D. 1 V

2. 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

3. 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

4. An SCR has three terminals viz ________________?

   A. Cathode, anode, gate
   B. Anode, cathode, grid
   C. Anode, cathode, drain
   D. None of the above

5. When SCR starts conducting, then _____________ loses all control?

   A. Gate
   B. Cathode
   C. Anode
   D. None of the above

6. In an SCR circuit, the angle of conduction can be changed by__________________?

   A. Changing anode voltage
   B. Changing gate voltage
   C. Reverse biasing the gate
   D. None of the above

7. 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

8. An SCR is sometimes called ____________?

   A. Triac
   B. Diac
   C. Unijunction transistor
   D. Thyristor

9. The normal way to turn on a SCR is by______________?

   A. Breakover voltage
   B. Appropriate anode current
   C. Appropriate gate current
   D. None of the above

10. In an SCR circuit the supply voltage is generally ___________ that of breakover voltage?

    A. Equal to
    B. Less than
    C. Greater than
    D. None of the above