Home / EEE / Single Stage Transistor :: section-1

EEE :: Single Stage Transistor

  1. The purpose of capacitors in a transistor amplifier is to ___________

  2. A.

     Protect the transistor

    B.

     Cool the transistor

    C.

     Couple or bypass a.c. component

    D.

     Provide biasing


  3. The purpose of a coupling capacitor in a transistor amplifier is to ___________

  4. A.

     Increase the output impedance of transistor

    B.

     Protect the transistor

    C.

     Pass a.c. and block d.c.

    D.

     Provide biasing


  5. If the input capacitor of a transistor amplifier is short-circuited, then

  6. A.

     Transistor will be destroyed

    B.

     Biasing conditions will change

    C.

     Signal will not reach the base

    D.

     None of the above


  7. The phase difference between the output and input voltages of a CE amplifier is ___________

  8. A.

     180°

    B.

     0°

    C.

     90°

    D.

     270°


  9. The ratio of output impedance of a CE amplifier is ___________

  10. A.

     About 1

    B.

     Low

    C.

     High

    D.

     Moderate


  11. In a CE amplifier, the phase difference between voltage across collector load RC and signal voltage is ___________

  12. A.

     180°

    B.

     270°

    C.

     90°

    D.

     0°


  13. In the d.c. equivalent circuit of a transistor amplifier, the capacitors are considered ___________

  14. A.

     Short

    B.

     Open

    C.

     Partially short

    D.

     None of the above


  15. In the a.c. equivalent circuit of a transistor amplifier, the capacitors are considered ___________

  16. A.

     Short

    B.

     Open

    C.

     Partially open

    D.

     None of the above


  17. The purpose of d.c. conditions in a transistor is to ___________

  18. A.

     Reverse bias the emitter

    B.

     Forward bias the collector

    C.

     Set up operating point

    D.

     None of the above


  19. The output power of a transistor amplifier is more than the input power because the additional power is supplied by ___________

  20. A.

     Transistor

    B.

     Biasing circuit

    C.

     Collector supply VCC

    D.

     None of the above