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ency is the ratio of output signal power to total power.

ency is the ratio of output signal power to total power.

Database System Concepts
Database System Concepts
7th Edition
ISBN:9780078022159
Author:Abraham Silberschatz Professor, Henry F. Korth, S. Sudarshan
Publisher:Abraham Silberschatz Professor, Henry F. Korth, S. Sudarshan
Chapter1: Introduction
Section: Chapter Questions
Problem 1PE
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1. Class A power amplifiers are a type of large-signal amplifier. 2. Efficiency is the ratio of output signal power to total power. True Or false 3. Each transistor in a class B amplifier conducts for the entire input cycle. 4. Class AB operation overcomes the problem of crossover distortion. 5. Darlington transistors can be used to increase the input resistance of a class AB amplifier. 6. The transistor in a class C amplifier conducts for a small portion of the input cycle. 7. The output of a class C amplifier is a replica of the input signal. 8. A class C amplifier usually employs a tuned circuit. 9. The JFET always operates with a reverse-biased gate-to-source pn junction. 10. The channel resistance of a JFET is a constant. 11. The gate-to-source voltage of an n-channel JFET must be negative. 12. VGs has no effect on Ip. 13. The D-MOSFET can be operated in two modes. 14. An E-MOSFET operates in the depletion mode. 15. A D-MOSFET has a physical channel and an E-MOSFET has an induced channel.
Transcribed Image Text:1. Class A power amplifiers are a type of large-signal amplifier. 2. Efficiency is the ratio of output signal power to total power. True Or false 3. Each transistor in a class B amplifier conducts for the entire input cycle. 4. Class AB operation overcomes the problem of crossover distortion. 5. Darlington transistors can be used to increase the input resistance of a class AB amplifier. 6. The transistor in a class C amplifier conducts for a small portion of the input cycle. 7. The output of a class C amplifier is a replica of the input signal. 8. A class C amplifier usually employs a tuned circuit. 9. The JFET always operates with a reverse-biased gate-to-source pn junction. 10. The channel resistance of a JFET is a constant. 11. The gate-to-source voltage of an n-channel JFET must be negative. 12. VGs has no effect on Ip. 13. The D-MOSFET can be operated in two modes. 14. An E-MOSFET operates in the depletion mode. 15. A D-MOSFET has a physical channel and an E-MOSFET has an induced channel.
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