Transistor Audio Power Amplifiers Mcqs
Transistor Audio Power Amplifiers Mcqs, this topic has 40 mcqs, It takes five to ten minutes to complete this free Transistor Audio Power Amplifiers Mcqs test. You will see 4 or 5 option of each question. You must choose / think only one option and then press on answer key for check right answer. Practice "Transistor Audio Power Amplifiers Mcqs" MCQs and share with your friends, brothers, sisters.
Transistor Audio Power Amplifiers Mcqs (Total Quiz: 40)
MCQ: The output transformer used in a power amplifier is a _____________ transformer?
- 1:1 ratio
- Step-up
- Step-down
- None of the above
C
MCQ: The pulsating d.c. applied to power amplifier causes________________?
- Burning of transistor
- Hum in the circuit
- Excessive forward voltage
- None of the above
B
MCQ: If the gain versus frequency curve of a transistor amplifier is not flat, then there is distortion ?
- Amplitude
- Intermodulation
- Frequency
- None of the above
C
MCQ: If the power rating of a transistor is 1W and collector current is 100mA, then maximum allowable collector voltage is________________?
- 1V
- 100V
- 20V
- 10V
D
MCQ: 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 ?
- 20%
- 80%
- 40%
- 50%
C
MCQ: The driver stage usually employs_________________?
- Class A power amplifier
- Push-pull amplifier
- Class C amplifier
- None of the above
A
MCQ: 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 ?
- 1 W
- 2 W
- 4 W
- None of the above
A
MCQ: What turn ratio (Np/Ns) of transformer is required to match 4 O speaker to a transistor having an output impedance of 8000 O ?
- 2
- 7
- 3
- None of the above
B
MCQ: For the same a.c. power output as above, what should be the minimum power rating of transistor for class B operation?
- 10 W
- 4 W
- 8 W
- None of the above
B