Malvino
Chapter 1
1. An ideal voltage source has
a. Zero internal resistance
b. Infinite internal resistance
c. A load-dependent voltage
d. A load-dependent current
a. Zero internal resistance
2. A real voltage source has
a. Zero internal resistance
b. Infinite internal resistance
c. A small internal resistance
d. A large internal resistance
c. A small internal resistance
3. If a load resistance is 1 kohm, a stiff voltage source has a resistance of
a. At least 10 ohm
b. Less than 10 ohm
c. More than 100 kohm
d. Less than 100 kohm
b. Less than 10 ohm
4. An ideal current source has
a. Zero internal resistance
b. Infinite internal resistance
c. A load-dependent voltage
d. A load-dependent current
b. Infinite internal resistance
5. A real current source has
a. Zero internal resistance
b. Infinite internal resistance
c. A small internal resistance
d. A large internal resistance
d. A large internal resistance
6. If a load resistance is 1 kohm, a stiff current source has a resistance of
a. At least 10 ohm
b. Less than 10 ohm
c. More than 100 kohm
d. Less than 100 kohm
c. More than 100 kohm
7. The Thevenin voltage is the same as the
a. Shorted-load voltage
b. Open-load voltage
c. Ideal source voltage
d. Norton voltage
b. Open-load 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
c. Internal resistance of a Norton circuit
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
b. Open the load resistor
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
a. Short the load resistor
11. The Norton current is sometimes called the
a. Shorted-load current
b. Open-load current
c. Thevenin current
d. Thevenin voltage
a. Shorted-load current
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
a. may produce a short
13. A cold-solder joint
a. shows good soldering technique
b. usually produces an open
c. is sometimes useful
d. always has low resistance
b. usually produces an open
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
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
b. Zero voltage across 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
b. Second approximation
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
a. Ideal approximation
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
b. Is constant
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
b. Is constant
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
c. Ideal voltage 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
b. Ideal current source and parallel 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
b. With a solder bridge
23. Derivations are
a. Discoveries
b. Inventions
c. Produced by mathematics
d. Always called theorems
c. Produced by mathematics
24. Laws are proved by
a. Definition
b. Experiment
c. Mathematics
d. Formulas
b. Experiment
25. Definitions are
a. Man made
b. Invented
c. Made up
d. All of the above
d. All of the above
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