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EEE :: Single Stage Transistor

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

  2. A.

     180°

    B.

     270°

    C.

     90°

    D.

     0°


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

  4. A.

     Short

    B.

     Open

    C.

     Partially short

    D.

     None of the above


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

  6. A.

     Short

    B.

     Open

    C.

     Partially open

    D.

     None of the above


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

  8. A.

     Reverse bias the emitter

    B.

     Forward bias the collector

    C.

     Set up operating point

    D.

     None of the above


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

  10. A.

     Transistor

    B.

     Biasing circuit

    C.

     Collector supply VCC

    D.

     None of the above


  11. The point of intersection of d.c. and a.c. load lines is called ___________

  12. A.

     Saturation point

    B.

     Cut off point

    C.

     Operating point

    D.

     None of the above


  13. The radio wave picked up by the receiving antenna is amplified about times to have reasonable sound output

  14. A.

     1000

    B.

     A million

    C.

     100

    D.

     10000


  15. If the power and current gains of a transistor amplifier are 16500 and 100 respectively, then voltage gain is

  16. A.

     165

    B.

     165 x 104

    C.

     100

    D.

     None of the above


  17. If the collector supply is 10V, then collector cut off voltage under d.c. conditions is ___________

  18. A.

     20 V

    B.

     5 V

    C.

     2 V

    D.

     10 V


  19. In order to get more voltage gain from a transistor amplifier, the transistor used should have ___________

  20. A.

     Thin base

    B.

     Thin collector

    C.

     Wide emitter

    D.

     None of the above