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
Multi-Stage Transistor Amplifiers
Transformer coupling is generally employed when load resistance is______________?
Transformer coupling is generally employed when load resistance is______________?
A. Large
B. Very large
C. Small
D. None of the above
_____________coupling provides the maximum voltage gain?
_____________coupling provides the maximum voltage gain?
A. RC
B. Transformer
C. Direct
D. Impedance
In RC coupling, the value of coupling capacitor is about_______________?
In RC coupling, the value of coupling capacitor is about_______________?
A. 100 pF
B. 0.1 µF
C. 0.01 µF
D. 10 µF
The best frequency response is of_____________coupling?
The best frequency response is of_____________coupling?
A. RC
B. Transformer
C. Direct
D. None of the above
In obtaining the frequency response curve of an amplifier, the______________?
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
In an RC coupling scheme, the coupling capacitor CC must be large enough______________?
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
When a multistage amplifier is to amplify d.c. signal, then one must use_____________coupling?
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
In practice, voltage gain is expressed______________?
In practice, voltage gain is expressed______________?
A. In db
B. In volts
C. As a number
D. None of the above
The final stage of a multistage amplifier uses______________?
The final stage of a multistage amplifier uses______________?
A. RC coupling
B. Transformer coupling
C. Direct coupling
D. Impedance coupling