This is the Multiple Choice Questions in Chapter 1: Introduction to Electronic Principles from the book **Electronic Principles 7th Edition by Albert Malvino**. 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.

### Topic Outline

- MCQs in Three Kinds of Formulas
- MCQs in Approximation
- MCQs in Voltage Sources
- MCQs in Current Sources
- MCQs in Thevenin’s Theorem
- MCQs in Norton’s Theorem

### Start Practice Exam Test Questions

**Choose the letter of the best answer in each questions.**

1. An ideal voltage source has

- a) Zero internal resistance
- b) Infinite internal resistance
- c) A load-dependent voltage
- d) A load-dependent current

2. A real voltage source has

- a. Zero internal resistance
- b. Infinite internal resistance
- c. A small internal resistance
- d. A large internal resistance

3. If a load resistance is 1 kΩ, a stiff voltage source has a resistance of

- a. At least 10 ohm
- b. Less than 10 ohm
- c. More than 100 kΩ
- d. Less than 100 kΩ

4. An ideal current source has

- a. Zero internal resistance
- b. Infinite internal resistance
- c. A load-dependent voltage
- d. A load-dependent current

5. A real current source has

- a. Zero internal resistance
- b. Infinite internal resistance
- c. A small internal resistance
- d. A large internal resistance

6. If a load resistance is 1 kΩ, a stiff current source has a resistance of

- a. At least 10 ohm
- b. Less than 10 ohm
- c. More than 100 kΩ
- d. Less than 100 kΩ

7. The Thevenin voltage is the same as the

- a. Shorted-load voltage
- b. Open-load voltage
- c. Ideal source voltage
- d. Norton voltage

8. The Thevenin resistance is equal in value to the

- a. Load resistance
- b. Half the load resistance
- c. Internal resistance of a Norton circuit
- d. Open-load resistance

9. To get the Thevenin voltage, you have to

- a. Short the load resistor
- b. Open the load resistor
- c. Short the voltage source
- d. Open the voltage source

10. To get the Norton current, you have to

- a. Short the load resistor
- b. Open the load resistor
- c. Short the voltage source
- d. Open the current source

11. The Norton current is sometimes called the

- a. Shorted-load current
- b. Open-load current
- c. Thevenin current
- d. Thevenin voltage

12. A solder bridge

- a. may produce a short
- b. may cause an open
- c. is useful in some circuits
- d. always has high resistance

13. A cold-solder joint

- a. shows good soldering technique
- b. usually produces an open
- c. is sometimes useful
- d. always has low resistance

14. An open resistor has

- a. Infinite current through it
- b. Zero voltage across it
- c. Infinite voltage across it
- d. Zero current through it

15. A shorted resistor has

- a. Infinite current through it
- b. Zero voltage across it
- c. Infinite voltage across it
- d. Zero current through it

16. An ideal voltage source and an internal resistance is an example of the

- a. Ideal approximation
- b. Second approximation
- c. Higher approximation
- d. Exact model

17. Treating a connecting wire as a conductor with zero resistance is an example of the

- a. Ideal approximation
- b. Second approximation
- c. Higher approximation
- d. Exact model

18. The voltage out of an ideal voltage source

- a. Is zero
- b. Is constant
- c. Depends on the value of load resistance
- d. Depends on the internal resistance

19. The current out of an ideal current source

- a. Is zero
- b. Is constant
- c. Depends on the value of load resistance
- d. Depends on the internal resistance

20. Thevenin’s theorem replaces a complicated circuit facing a load by an

- a. Ideal voltage source and parallel resistor
- b. Ideal current source and parallel resistor
- c. Ideal voltage source and series resistor
- d. Ideal current source and series resistor

21. Norton’s theorem replaces a complicated circuit facing a load by an

- a. Ideal voltage source and parallel resistor
- b. Ideal current source and parallel resistor
- c. Ideal voltage source and series resistor
- d. Ideal current source and series resistor

22. One way to short a device is

- a. With a cold-solder joint
- b. With a solder bridge
- c. By disconnecting it
- d. By opening it

23. Derivations are

- a. Discoveries
- b. Inventions
- c. Produced by mathematics
- d. Always called theorems

24. Laws are proved by

- a. Definition
- b. Experiment
- c. Mathematics
- d. Formulas

25. Definitions are

- a. Man made
- b. Invented
- c. Made up
- d. All of the above