Class_____________ power amplifier has the highest collector efficiency ?

Related Mcqs:

1. What will be the collector efficiency of a power amplifier having zero signal power dissipation of 5 watts and a.c. power output of 2 watts ?

   A. 20%
   B. 80%
   C. 40%
   D. 50%

2. If the power rating of a transistor is 1W and collector current is 100mA, then maximum allowable collector voltage is________________?

   A. 1V
   B. 100V
   C. 20V
   D. 10V

3. If the maximum collector current due to signal alone is 3 mA, then zero signal collector current should be at least equal to___________________?

   A. 6 mA
   B. mA
   C. 3 mA
   D. 1 mA

4. If the collector supply is 10V, then collector cut off voltage under d.c. conditions is _______________?

   A. 20 V
   B. 5 V
   C. 2 V
   D. 10 V

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

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

6. 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

7. In a single stage transistor amplifier, RC and RL represent collector resistance and load resistance respectively. The transistor sees a d.c. load of _____________________?

   A. RC + RL
   B. RC || RL
   C. RL
   D. RC

8. If RC and RL represent the collector resistance and load resistance respectively in a single stage transistor amplifier, then a.c. load is____________________?

   A. RL + RC
   B. RC || RL
   C. RL – RC
   D. RC

9. The value of collector load RC in a transistor amplifier is _______________the output impedance of the transistor?

   A. The same as
   B. Less than
   C. More than
   D. None of the above

10. A single stage transistor amplifier with collector load RC and emitter resistance RE has a d.c. load of ________________________?

    A. RC
    B. RC || RE
    C. RC – RE
    D. RC + RE