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 ?

Related Mcqs:

1. 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...

2. 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...

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

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

4. The output power of a transistor amplifier is more than the input power because the additional power is supplied by__________________?

   A. Transistor B. Biasing circuit C. Collector supply VCC D. None of the above...

5. 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...

6. If the zero signal dissipation of a transistor is 1W, then power rating of the transistor should be at least___________________?

   A. 5 W B. 33 W C. 75 W D. 1 W...

7. The output signal voltage and current of a power amplifier are 5V and 200 mA; the values being r.m.s. What is the power output ?

   A. 1 W B. 2 W C. 4 W D. None of the above...

8. 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%...

9. 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...

10. The power output of an audio system is 18 W. For a person to notice an increase in the output (loudness or sound intensity) of the system, what must the output power be increased to ?

    A. 2 W B. 6 W C. 68 W D. None of the above...