1) If a three-stage amplifier has individual stage gains of 10 db, 5 db and 12 db, then total gain in db is____________? a. 600 db b. 24 db c. 14 db d. 27 db
|
||||
2) Transformer coupling is generally employed when load resistance is______________? a. Large b. Very large c. Small d. None of the above
|
||||
3) _____________coupling provides the maximum voltage gain? a. RC b. Transformer c. Direct d. Impedance
|
||||
4) In RC coupling, the value of coupling capacitor is about_______________? a. 100 pF b. 0.1 µF c. 0.01 µF d. 10 µF
|
||||
5) The best frequency response is of_____________coupling? a. RC b. Transformer c. Direct d. None of the above
|
||||
6) In obtaining the frequency response curve of an amplifier, the______________? a. Amplifier level output is kept constant b. Amplifier frequency is held constant c. Generator frequency is held constant d. Generator output level is held constant
|
||||
7) In an RC coupling scheme, the coupling capacitor CC must be large enough______________? a. To pass d.c. between the stages b. Not to attenuate the low frequencies c. To dissipate high power d. None of the above
|
||||
8) When a multistage amplifier is to amplify d.c. signal, then one must use_____________coupling? a. RC b. Transformer c. Direct d. None of the above
|
||||
9) In practice, voltage gain is expressed______________? a. In db b. In volts c. As a number d. None of the above
|
||||
10) The final stage of a multistage amplifier uses______________? a. RC coupling b. Transformer coupling c. Direct coupling d. Impedance coupling
|