A. 30 db
B. 60 db
C. 120 db
D. 600 db
Related Mcqs:
- A gain of 1000 times in voltage is expressed by_______________?
A. 60 db
B. 30 db
C. 120 db
D. 600 db - 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 - 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 - 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 - 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 - 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% - 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 - 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 - 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 - For highest power gain, one would use _________________configuration?
A. CC
B. CB
C. CE
D. none of the above
