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# Practice Quiz in DC Biasing – BJT Part 1

This is the Online Practice Quiz in DC Biasing – BJTs Part 1 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.

### Start Part I of the Online Practice Quiz

#### Quiz in DC Biasing – BJTs

Question 1. In a voltage-divider circuit, which one of the stability factors has the least effect on the device at very high temperature?

A. S(ICO)

B. S(VBE)

C. S(ฮฒ)

D. Undefined

Question 2. Determine ICQ at a temperature of 175ยบ C if ICQ = 2 mA at 25ยบ C for RB / RE = 20 due to the S(ฮฒ) stability factor.

A. 2.417 mA

B. 2.392 mA

C. 2.25 mA

D. 2.58 mA

Question 3. For the typical transistor amplifier in the active region, VCE is usually about _____ % to _____ % of VCC.

A. 10, 60

B. 25, 75

C. 40, 90

D. None of these

Question 4. Which of the following is assumed in the approximate analysis of a voltage divider circuit?

A. IB is essentially zero amperes.

B. R1 and R2 are considered to be series elements.

C. ฮฒRE โฅ 10R2

D. All of these

Question 5. Calculate the storage time in a transistor switching network if toff is 56 ns, tf = 14 ns, and tr = 20 ns.

A. 70 ns

B. 42 ns

C. 36 ns

D. 34 ns

Question 6. Which of the following voltages must have a negative level (value) in any npn bias circuit?

A. VBE

B. VCE

C. VBC

D. None of these

Question 7. The total time required for the transistor to switch from the "off" to the "on" state is designated as ton and defined as the delay time plus the time element.

A. True

B. False

Question 8. Determine the reading on the meter when VCC = 20 V, RC = 5 kโฆ, and IC = 2 mA.

A. 10 V

B. โ10 V

C. 0.7 V

D. 20 V

Question 9. For the BJT to operate in the active (linear) region, the base-emitter junction must be _____-biased and the base-collector junction must be _____-biased.

A. forward, forward

B. forward, reverse

C. reverse, reverse

D. reverse, forward

Question 10. The ratio of which two currents is represented by ฮฒ?

A. IC and IE

B. IC and IB

C. IE and IB

D. None of these

### More Practice Quiz in DC Biasing - BJTs

Practice Quiz Part 1

Practice Quiz Part 2

Practice Quiz Part 3

Practice Quiz Part 4

Practice Quiz Part 5

Practice Quiz Part 6

### See: Complete List of Practice Quizzes

Note: After taking this particular quiz, you can proceed to check all the topics.

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