Class C amplifiers are used as ___________________?

Related Mcqs:

1. Power amplifiers handle ______________ signals compare to voltage amplifiers?

   A. Small
   B. Very small
   C. Large
   D. None of the above

2. ________________ coupling is generally employed in power amplifiers?

   A. Transformer
   B. RC
   C. direct
   D. Impedance

3. Power amplifiers generally use transformer coupling because transformer permits______________?

   A. Cooling of the circuit
   B. Impedance matching
   C. Distortionless output
   D. Good frequency response

4. In transistor amplifiers, we generally use______________ capacitors?

   A. Electrolytic
   B. Mica
   C. Paper
   D. Air

5. In transistor amplifiers, we use_____________transformer for impedance matching?

   A. Step up
   B. Step down
   C. Same turn ratio
   None of the above

6. A 2-transistor class B power amplifier is commonly called ______________ amplifier?

   A. Dual
   B. Push-pull
   C. Symmetrical
   D. Differential

7. The maximum collector efficiency of class B operation is ________________?

   A. 50%
   B. 90%
   C. 5%
   D. 5%

8. For the same a.c. power output as above, what should be the minimum power rating of transistor for class B operation?

   A. 10 W
   B. 4 W
   C. 8 W
   D. None of the above

9. The class B push-pull circuit can deliver 100 W of a.c. output power. What should be the minimum power rating of each transistor ?

   A. 20 W
   B. 40 W
   C. 10 W
   D. 80 W

10. The maximum a.c. power output from a class A power amplifier is 10 W. What should be the minimum power rating of the transistor used ?

    A. 10 W
    B. 15 W
    C. 5 W
    D. 20 W