Practice Quiz in Power Amplifiers Part 5

This is the Online Practice Quiz in Power Amplifiers Part 5 from the book, Electronic Devices and Circuit Theory 10th Edition by Robert L. Boylestad. If you are looking for a reviewer in Electronics Engineering this will definitely help. I can assure you that this will be a great help in reviewing the book in preparation for your Board Exam. Make sure to familiarize each and every questions to increase the chance of passing the ECE Board Exam.

Continue Part V of the Online Practice Quiz

Quiz in Power Amplifiers Question 41. The beta of a power transistor is generally _____. A. more than 200 B. 100 to 200 C. less than 100 D. 0 Question 42. A _____ power amplifier is limited to use at one fixed frequency. A. class A B. class B or AB C. class C D. class D Question 43. The _____ has the hottest temperature in a power transistor. A. heat sink B. case C. junction D. None of these Question 44. The slope of the ac load line in the class A transformer-coupled transistor is _____. A. –1/RL (load resistor) B. 1/(a2RL) C. –1/(a2RL) D. 1/RL Question 45. Power amplifiers primarily provide sufficient power to an output load, typically from _____ to _____. A. a few kW, tens of kW B. 500 W, 1 kW C. 100 W, 500 W D. a few W, tens of W Question 46. The fundamental component is typically _____ any harmonic component. A. larger than B. the same as C. smaller than D. None of these Question 47. A class A amplifier dissipates _____ power when the load is drawing maximum power from the circuit. A. the least B. about the same C. the most D. None of these Question 48. In class B power amplifiers, the output signal varies for _____ of the cycle. A. 360º B. 180º C. between 180º and 360º D. less than 180º Question 49. Class D operation can achieve power efficiency of over _____. A. 90% B. 78.5% C. 50% D. 25% Question 50. The reflected impedance seen from one side of the transformer to the other side is _____. A. N1/N2 B. (N1/N2)2 C. (N1/N2)1/3 D. N1× N2

More Practice Quiz in Power Amplifiers

Practice Quiz Part 1

Practice Quiz Part 2

Practice Quiz Part 3

Practice Quiz Part 4

Practice Quiz Part 5

Practice Quiz Part 6

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Complete Practice Quiz in Electronic Devices and Circuit Theory

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