An SCR is made of_______________?

Related Mcqs:

1. 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

2. An SCR can exercise control over____________of a.c. supply?

   A. Positive half-cycles only
   B. Negative half-cycles only
   C. Both positive and negative half-cycles
   D. Positive or negative half-cycles

3. An SCR has three terminals viz ________________?

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

4. An SCR is a solid state equivalent of ______________?

   A. Triode
   B. Pentode
   C. Gas-filled triode
   D. Tetrode

5. An SCR behaves as a____________switch?

   A. Unidirectional
   B. Bidirectional
   C. Mechanical
   D. None of the above

6. In the normal operation of an SCR, anode is __________ w.r.t. cathode?

   A. At zero potential
   B. Negative
   C. Positive
   D. None of the above

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

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

8. 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

9. An SCR is a ____________ triggered device?

   A. Voltage
   B. Current
   C. Voltage as well as current
   D. None of the above

10. 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