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Electronic Devices and Circuits: Large Signal Amplifiers
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Electronic Devices and Circuits: Large Signal Amplifiers
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25 Questions

1. What is the output of a class B amplifier for sinusoidal input?
2. The power rating of the amplifier is 100watts then the transistor can only operate at ___________
3. Why there is a need for heat sinks in Class A amplifier?
4. If water is used as a cooling medium then it is termed as _______________
5. Passive heat sinks are made of ________________
6. The use of amplifier in a circuit is to _____________ for input signal.
7. Input stage of power amplifier is also called ___________
8. Which device was used for the amplification of audio signals before the invention of power amplifiers?
9. Difference between active heat sink and passive heat sink is that passive heat sink?
10. The unwanted characteristics of amplifier output apart from the desired output is collectively termed as ___________
11. When is maximum efficiency of class B amplifier achieved?
12. In a class B amplifier, it is found that DC power is 25W, find the ac power.
13. The maximum eciency produced by the Class B amplier is
14. Which of the following statement is true about class A amplifiers?
15. Active heat sinks are less durable than passive heat sink because of the presents of __________
16. What is the major principle behind heat sink action?
17. Read statements and select the correct option below. A. A push-pull amplifier decreases harmonic distortion B. Output has half-wave symmetry
18. Why do we use CE amplifier as a large signal class a amplifier?
19. The power dissipation of Class C ampliers is
20. Unit of power rating of a transistor is expressed in ___________
21. Pentavalent atoms are the atoms known as
22. What is the purpose of heat sink in transistor circuit?
23. Power amplifier directly amplifies ___________
24. If DC power for a Class A amplifier is 500W and AC power is 150W, what is its efficiency?
25. Which of these is incorrect for complementary symmetry push-pull amplifiers?

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