fbpx

Floyd Self-test in Bipolar Junction Transistors

(Last Updated On: December 8, 2017)

Floyd Self-test in Chapter 4 of Electronic Devices

This is the Self-test in Chapter 4: Bipolar Junction Transistors from the book Electronic Devices Conventional Current Version, 9th edition by Thomas L. Floyd. If you are looking for a reviewer in Electronics Engineering this will definitely help you before taking the Board Exam.

Floyd Self-test Chapter 4 Topic Outline

  • Floyd Self-test in Bipolar Junction Transistor (BJT) Structure
  • Floyd Self-test in Basic BJT Operation
  • Floyd Self-test in BJT Characteristics and Parameters
  • Floyd Self-test in The BJT as an Amplifier
  • Floyd Self-test in The Phototransistor
  • Floyd Self-test in The BJT as a Switch
  • Floyd Self-test in Transistor Categories and Packaging

Start Practice Exam Test Questions

Choose the letter of the best answer in each questions.

1. The three terminals of a bipolar junction transistor are called

  • (a) p, n, p
  • (b) n, p, n
  • (c) input, output, ground
  • (d) base, emitter, collector

2. In a pnp transistor, the p region are

  • (a) base and emitter
  • (b) base and collector
  • (c) emitter and collector

3. For operation as an amplifier, the base of an npn transistor must be

  • (a) positive with respect to the emitter
  • (b) positive with respect to the collector
  • (c) negative with respect to the emitter
  • (d) 0V

4. The emitter current is always

  • (a) greater than the base current
  • (b) less than the collector current
  • (c) greater than the collector current
  • (d) answers (a) and (c)

5. The βdc of a transistor is its

  • (a) current gain
  • (b) voltage gain
  • (c) power gain
  • (d) internal resistance

6. If Ic is 50 times larger than Ib, then βdc is

  • (a) 0.02
  • (b) 100
  • (c) 50
  • (d) 500

7. The approximate voltage across the forward-biased base-emitter junction of silicon BJT is

  • (a) 0V
  • (b) 0.7
  • (c) 0.3
  • (d) VBB

8. The bias condition for a transistor to be used as a linear amplifier is called

  • (a) forward-reverse
  • (b) forward-forward
  • (c) reverse-reverse
  • (d) collector bias

9. If the output of a transistor amplifier is 5V rms and the input is 100mV rms, the voltage gain is

  • (a) 5
  • (b) 500
  • (c) 50
  • (d) 100

10. When a lowercase r’ is used in relation to a transistor, it refers to

  • (a) a low resistance
  • (b) a wire resistance
  • (c) an internal ac resistance
  • (d) a source resistance

11. In a given transistor amplifier, Rc= 2.2 kΩ and r’e =20Ω, the voltage gain is

  • (a) 2.2
  • (b) 110
  • (c) 20
  • (d) 44

12. When operated in cutoff and saturation, the transistor acts like a

  • (a) linear amplifier
  • (b) switch
  • (c) variable capacitor
  • (d) variable resistor

13. In cutoff, Vce is

  • (a) 0V
  • (b) minimum
  • (c) maximum
  • (d) equal to Vcc
  • (e) answers (a) and (b)
  • (f) answers (c) and (d)

14. In saturation, Vce is

  • (a) 0.7V
  • (b) equal to Vcc
  • (c) minimum
  • (d) maximum

15. To saturate a BJT,

  • (a) Ib= Ic(sat)
  • (b) Ib>Ic(sat)/βdc
  • (c) Vcc must be at least 10V
  • (d) the emitter must be grounded

16. Once in saturation, a further increase in base current will

  • (a) cause the collector current to increase
  • (b) not affect the collector current
  • (c) cause the collector current to decrease
  • (d) turn the transistor off

17. In a phototransistor, base current is

  • (a) set by a bias voltage
  • (b) directly proportional to light intensity
  • (c) inversely proportional to light intensity
  • (d) not a factor

18. The relationship between the collector current and a light-generated base current is

  • (a) Ic= βdcIλ
  • (b) Ic= αdcIλ
  • (c) Ic= λλ
  • (d) Ic= β2dcIλ

19. An optocoupler usually consists of

  • (a) two LEDs
  • (b) an LED and a photodiode
  • (c) an LED and a phototransistor
  • (d) both (b) and (c)

20. In a transistor amplifier, if the base-emitter junction is open, the collector voltage is

  • (a) Vcc
  • (b) 0V
  • (c) floating
  • (d) 0.2V

21. A DMM measuring on open transistor junction shows

  • (a) 0V
  • (b) 0.7V
  • (c) OL
  • (d) Vcc

Complete List of Floyd Self-test in Electronic Devices

Check your work.

Floyd Self-test in Bipolar Junction Transistors
4 (80%) 1 vote

Add Comment

© 2014 PinoyBIX Engineering. © 2018 All Rights Reserved | How to Donate?
mcq in computer fundamentals
➡️ MCQ in Computer Fundamentals Series | ECE Board Exam
mcq in industrial electronics
➡️ MCQ in Industrial Electronics Series | ECE Board Exam
MCQ in Power Generators (Cells and Batteries) Part 5 | ECE Board Exam
➡️ MCQ in Power Generators, Sources, Principles, Applications Series | ECE Board Exam
mcq in electrical circuit
➡️ MCQ in Electrical Circuit Series | ECE Board Exam

Get FREE Review Course
in your inbox

Subscribe to our mailing list and get reviewers and updates to your email inbox.

Thank you for subscribing.

Something went wrong.