Multi Stage Transistor Amplifiers Mcqs - Set 2

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
Answer  Explanation 

ANSWER: 27 db

Explanation:
No explanation is available for this question!


2)   Transformer coupling is generally employed when load resistance is______________?

a. Large
b. Very large
c. Small
d. None of the above
Answer  Explanation 

ANSWER: Small

Explanation:
No explanation is available for this question!


3)   _____________coupling provides the maximum voltage gain?

a. RC
b. Transformer
c. Direct
d. Impedance
Answer  Explanation 

ANSWER: Transformer

Explanation:
No explanation is available for this question!


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
Answer  Explanation 

ANSWER: 10 µF

Explanation:
No explanation is available for this question!


5)   The best frequency response is of_____________coupling?

a. RC
b. Transformer
c. Direct
d. None of the above
Answer  Explanation 

ANSWER: Direct

Explanation:
No explanation is available for this question!


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
Answer  Explanation 

ANSWER: Generator output level is held constant

Explanation:
No explanation is available for this question!


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
Answer  Explanation 

ANSWER: Not to attenuate the low frequencies

Explanation:
No explanation is available for this question!


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
Answer  Explanation 

ANSWER: Direct

Explanation:
No explanation is available for this question!


9)   In practice, voltage gain is expressed______________?

a. In db
b. In volts
c. As a number
d. None of the above
Answer  Explanation 

ANSWER: In db

Explanation:
No explanation is available for this question!


10)   The final stage of a multistage amplifier uses______________?

a. RC coupling
b. Transformer coupling
c. Direct coupling
d. Impedance coupling
Answer  Explanation 

ANSWER: Transformer coupling

Explanation:
No explanation is available for this question!