Transistor Audio Power Amplifiers MCQ

Transistor Audio Power Amplifiers MCQ Questions

• 1. What is called the output stage of a multistage amplifier?
• 2. Which of the following coupling is generally employed in power amplifiers?
• 3. A class a power amplifier uses
• 4. The maximum efficiency of resistance loaded class a power amplifier is
• 5. Which of the following class power amplifier has the highest collector efficiency?
• 6. Power amplifiers handle …………. signals compare to voltage amplifiers.
• 7. Which kind of coupling is the most costly coupling?
• 8. What is the maximum collector efficiency of class B operation?
• 9. When no signal is applied, the approximate collector efficiency of class a power amplifier is
• 10. Power amplifiers generally use transformer coupling because transformer permits……..
• 11. The disadvantage of impedance matching is that it
• 12. low efficiency of a power amplifier results in ..........
• 13. The output transformer used in a power amplifier is a ............... transformer
• 14. A 2-transistor class B power amplifier is commonly called the
• 15. The size of a power transistor is made considerably large to …………
• 16. What is the most important consideration in a power amplifier?
• 17. An AF amplifier is shielded to prevent induction due to stray magnetic fields.
• 18. Which of the following device was used for the amplification of audio signals before the invention of power amplifiers?
• 19. What does the power amplifier directly amplifies?
• 20. ............. audio speaker will be hard to be driven by a power amplifier.