A gain of 1,000,000 times in power is expressed by_____________?

Related Mcqs:

1. A gain of 1000 times in voltage is expressed by_______________?

   A. 60 db
   B. 30 db
   C. 120 db
   D. 600 db

2. An amplifier has a power gain of 100. Its db gain is ________________?

   A. 10 db
   B. 20 db
   C. 40 db
   D. None of the above

3. The gain of an amplifier is expressed in db because_____________?

   A. It is a simple unit
   B. Calculations become easy
   C. Human ear response is logarithmic
   D. None of the above

4. 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

5. If the power level of an amplifier reduces to half, the db gain will fall by___________?

   A. 5 db
   B. 2 db
   C. 10 db
   D. 3 db

6. 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%

7. 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

8. 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

9. If the power and current gains of a transistor amplifier are 16500 and 100 respectively, then voltage gain is_____________________?

   A. 165
   B. 165 x 104
   C. 100
   D. None of the above

10. For highest power gain, one would use _________________configuration?

    A. CC
    B. CB
    C. CE
    D. none of the above