Practice Quiz in Bipolar Junction Transistor Amplifiers Part 4

This is the Online Practice Quiz in Bipolar Junction Transistor Amplifiers Part 4 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 IV of the Online Practice Quiz

Quiz in Bipolar Junction Transistor Amplifiers Question 31. Which of the following gains is less than 1 for a common-base configuration? A. Ai B. Av C. Ap D. None of these Question 32. Which of the following techniques can be used in the sinusoidal ac analysis of transistor networks? A. Small-signal B. Large-signal C. Small- or large-signal D. None of these Question 33. Under which of the following condition(s) is the current gain Av ≈ β? A. ro ≥ 10RC B. RB ≥ 10re C. ro ≥ 10RC and RB ≥ 10re D. None of these Question 34. Which of the following is (are) true regarding the output impedance for frequencies in the midrange ≤ 100 kHz of a BJT transistor amplifier? A. The output impedance is purely resistive. B. It varies from a few ohms to more than 2 MΩ. C. An ohmmeter cannot be used to measure the small-signal ac output impedance. D. All of these Question 35. Which of the following conditions must be met to allow the use of the approximate approach in a voltage-divider bias configuration? A. βre > 10R2 B. βRE > 10R2 C. βRE < 10R2 D. βre < 10R2 Question 36. Which of the following define(s) the conversion efficiency? A. Ac power to the load/ac input power B. Ac power to the load/dc power supplied C. Dc output power/ac input power D. All of these Question 37. Under which of the following conditions is the output impedance of the network approximately equal to RC for a common-emitter fixed-bias configuration? A. ro ≥ 10RC B. ro < 10RC C. ro < ro D. ro > ro Question 38. Which of the following configurations has an output impedance Zo equal to RC? A. Fixed-bias common-emitter B. Common-emitter voltage-divider with bypass capacitor C. Common-emitter voltage-divider without bypass capacitor D. All of these Question 39. The current gain for the Darlington connection is _____. A. β1 • (β2/2) B. β1 • β2 C. β1 / β2 D. β1 • (β2 – 1) Question 40. The feedback pair uses a(n) _____ transistor driving a(n) _____ transistor, the two devices acting effectively much like one pnp transistor. A. pnp, npn B. pnp, pnp C. npn, npn D. None of these

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