An SCR has three terminals viz ________________?

Related Mcqs:

1. 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

2. An SCR is turned off when ________________?

   A. Anode current is reduced to zero
   B. Gate voltage is reduced to zero
   C. Gate is reverse biased
   D. None of the above

3. 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

4. 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

5. An SCR is made of_______________?

   A. Germanium
   B. Silicon
   C. Carbon
   D. None of the above

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

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

7. An SCR behaves as a____________switch?

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

8. 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

9. 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

10. An SCR is a ____________ triggered device?

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