The pulsating d.c. applied to power amplifier causes________________?

Related Mcqs:

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

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

2. 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%...

3. 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...

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 pulsating torque exerted by steam locomotives causes which of the following ?

   A. Jolting and skidding B. Hammer blow C. Pitching D. All of the above...

6. 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...

7. 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...

8. An amplifier receives 0.1 W of input signal and delivers 15 W of signal power. What is the power gain in db?

   A. 8 db B. 6 db C. 5 db D. 4 db...

9. When an a.c. signal is applied to an amplifier, ,the operating point moves along_________________?

   A. c. load line B. c. load line C. both d.c. and a.c. load lines D. none of the above...

10. A class A power amplifier is sometimes called______________amplifier?

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