A. Transistor
B. Biasing circuit
C. Collector supply VCC
D. None of the above
Related Mcqs:
- 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 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 - If a transistor amplifier draws 2mA when input voltage is 10 V, then its input impedance is ____________?
A. 20 kΩ
B. 2 kΩ
C. 10 kΩ
D. 5 kΩ - A 2-transistor class B power amplifier is commonly called ______________ amplifier?
A. Dual
B. Push-pull
C. Symmetrical
D. Differential - 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 - In a single stage transistor amplifier, RC and RL represent collector resistance and load resistance respectively. The transistor sees a d.c. load of _____________________?
A. RC + RL
B. RC || RL
C. RL
D. RC - In order to get more voltage gain from a transistor amplifier, the transistor used should have_________________?
A. Thin base
B. Thin collector
C. Wide emitter
D. None of the above - 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 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 - If the input capacitor of a transistor amplifier is short-circuited, then_________________?
A. Transistor will be destroyed
B. Biasing conditions will change
C. Signal will not reach the base
D. None of the above
