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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

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  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

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  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

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

  8. A.

     180°

    B.

     0°

    C.

     90°

    D.

     270°

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

  10. A.

     About 1

    B.

     Low

    C.

     High

    D.

     Moderate

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  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°

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  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

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  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

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  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

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  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

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