A class A power amplifier uses _________________?

Related Mcqs:

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

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

2. 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

3. The maximum efficiency of resistance loaded class A power amplifier is _________________?

   A. 5%
   B. 50%
   C. 30%
   D. 25%

4. 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%

5. 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

6. A class A power amplifier is sometimes called______________amplifier?

   A. Symmetrical
   B. Single-ended
   C. Reciprocating
   D. Differential

7. The maximum efficiency of transformer coupled class A power amplifier is _______________?

   A. 30%
   B. 50%
   C. 80%
   D. 45%

8. A transformer coupled class A power amplifier has a load of 100 O on the secondary. If the turn ratio is 10:1, what is the value of load appearing on the primary?

   A. 5 kO
   B. 20 kO
   C. 100 kO
   D. 10 kO

9. 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

10. The bandwidth of a single stage amplifier is_____________that of a multistage amplifier?

    A. More than
    B. The same as
    C. Less than
    D. Data insufficient