Deck 1: Introduction

Question 1

The voltage across a shorted device is

A) zero.
B) very high.
C) always greater than 10 volts.
D) measured with an ammeter.

Answer 1

A

Question 2

A Thevenin circuit cannot be converted to a Norton circuit.

Answer 2

False

Question 3

Troubleshooting means finding out why a circuit is not doing what it is supposed to do.

Answer 3

True

Question 4

The duality principle states that for any theorem in electrical circuit analysis there is a dual (opposite)theorem in which one replaces the original quantities with dual quantities.

Question 5

A derivation is a formula produced without the use of mathematics.

Question 6

A definition is a formula invented for a new concept.

Question 7

The term stiff voltage source refers to a voltage source with a load resistance which is

A) times larger than the source resistance.
B) 100 times larger than the source resistance.
C) equal to the source resistance.
D) 100 times smaller than the source resistance.

Question 8

A law summarizes a relationship that does not yet exist in nature.

Question 9

The most common circuit troubles are

A) faulty power supplies.
B) improper design.
C) broken switches.
D) open and shorts.

Question 10

Norton current is sometimes called the open-circuit current.

Question 11

A solder bridge

A) is a poor solder connection.
B) is also called a cold-solder joint.
C) effectively shorts any device between two conducting lines.
D) effectively opens any device between two conducting lines.

Question 12

Norton's theorem states that the load voltage equals the Norton current times the Norton resistance in parallel with the load resistance.

Question 13

A law is true because you can verify it with an experiment.

Question 14

A formula is a rule that relates quantities.

Question 15

In order to avoid loading error,a field-effect transistor (FET)input or digital multimeter (DMM)is generally used to measure a voltage.

Question 16

Which approximation is generally the best choice because it is easy to use and does not require a computer?

A) first
B) second
C) third
D) fourth

Question 17

The Thevenin voltage is sometimes called

A) the open-circuit voltage.
B) the short-circuit voltage.
C) the source voltage.
D) the load voltage.

Question 18

A dc current source produces a constant load current

A) for different load resistances.
B) for constant load resistances only.
C) by using a constant voltage source.
D) by using alternating current.

Question 19

An ideal dc voltage source produces a load voltage

A) that is variable.
B) that is constant.
C) that is zero.
D) that is greater than 250 volts.

Question 20

In a circuit,voltages are usually measured with respect to

A) the positive side of the power source.
B) the component known as the fuse.
C) ground.
D) the load.

Question 21

A dc voltage source produces a constant load voltage

A) for different load resistances.
B) for equal load resistances only.
C) with zero load resistance.
D) by using alternating current.

Question 22

A breadboard is

A) a shelf used to store components.
B) a circuit often built with solderless connections.
C) a small printed circuit board.
D) a schematic diagram of a circuit.

Question 23

When troubleshooting,the ideal approximation is never adequate.

Question 24

Definitions are formulas that a researcher creates.

Question 25

Whenever two vertical bars are used in an equation,it means

A) divide twice.
B) in series with.
C) in parallel with.
D) multiply the following value.

Question 26

For higher approximations,a computer and a program like MultiSim should be used.

Question 27

A linear resistance

A) increases with increasing voltage.
B) decreases with increasing voltage.
C) does not change with increasing voltage.
D) is effectively nonlinear in a Thevenin circuit.

Question 28

The second approximation of a dc voltage source includes internal resistance.

Question 29

A derivation is a formula that we can get from other formulas.

Question 30

When can the source resistance of a current source be ignored?

A) when it is at least 100 times larger than the load resistance
B) when it is at least 10 times larger than the load resistance
C) when it is equal to the load resistance
D) when it is zero

Question 31

The different levels of approximation are an ideal approximation,a second approximation,a third approximation,and an exact answer.

Question 32

The input impedance of a voltmeter should be how many times greater than the Thevenin resistance?

A) 10
B) 100
C) 1000
D) 2

Question 33

When you reduce a current source to zero

A) you are effectively replacing it by a short.
B) you are effectively replacing it by an open.
C) you are effectively replacing it by a low-value resistor.
D) you are effectively replacing it by a fuse.

Question 34

When analyzing a transistor circuit,the transistor is visualized as a

A) load resistor.
B) voltage source.
C) current source.
D) voltmeter.

Question 35

Thevenin voltage is defined as the voltage across the load terminals when

A) the voltage source is removed.
B) the load resistor is open.
C) the load resistor is shorted.
D) the voltage source is shorted.

Question 36

When can the source resistance be ignored?

A) when it is at least 100 times smaller than the load resistance
B) when it is at least 10 times smaller than the load resistance
C) when it is equal to the load resistance
D) never

Question 37

Coulomb's Law states that the force of attraction or repulsion between two charges is directly proportional to the charges and inversely proportional to the square of the distance between them.

Question 38

With an ideal voltage source,only the load current changes when the load resistance changes.