Deck 24: Solving DC Networks

Question 1

A source current is often easier to work with-especially when calculating values for ____ circuits-than a voltage source, which drops voltages across series elements.

A)parallel
B)perpendicular
C)circular
D)distant

Answer 1

A

Question 2

Under the superposition theorem, we do an analysis for each power source, and the resulting currents are then algebraically combined to determine the magnitude and direction of each current flow.

Answer 2

True

Question 3

Power sources represented by a current source are connected to a perpendicular resistance that delivers a certain amount of current such as 1 ampere, 2 amperes, 3 amperes, and so on.

Answer 3

False

Question 4

Norton's theorem assumes that the source of current is divided among parallel branches.

Question 5

The superposition theorem is developed on the principle that, in a circuit with multiple power sources, we can determine just how much each power source contributes toward the branch currents.

Question 6

When using ____, we can pretend to place all components, except one resistor, into a black box and bring out only the two terminals labeled A and B.

A)Thevenin's theorem
B)the superposition theorem
C)Kirchhoff's voltage law
D)the black box theorem

Question 7

Norton's theorem,developed by American scientist E.L.Norton, is used to ____ a circuit network into a simple current source and a single parallel resistor.

A)reduce
B)manipulate
C)translate
D)divide

Question 8

It is assumed that you can completely solve a system of simultaneous equations with multiple unknowns.

Question 9

When asked to find the magnitude and direction of all branch currents using the superposition theorem, our first step is to eliminate all but one of the batteries by replacing them with a ____.

A)resistor
B)short circuit
C)direct circuit
D)larger power source

Question 10

Using the superposition theorem, the currents through each resistor must be added algebraically, so currents flowing in the same direction are being added, and currents flowing in opposite directions are being ____.

A)multiplied
B)divided
C)ignored
D)subtracted

Question 11

A network is any complex arrangement of circuit elements and often involves multiple voltage sources, and the use of Ohm's and Kirchhoff's laws usually suffice to solve related problems.

Question 12

According to Thevenin's theorem, if we need to know specific information about a resistor, we can simplify our task by reducing the rest of the network to a single equivalent series circuit of one emf and one resistance, known as Thevenin's ____ and Thevenin's resistance.

A)magnetism
B)voltage
C)current
D)reduction

Question 13

____ sources are generally shown as a battery with a resistance connected in series with the circuit to represent the internal resistance of the source.

A)Current
B)Electromagnetic
C)Heat
D)Voltage

Question 14

Norton's theorem is very similar to Thevenin's theorem.

Question 15

Voltages sources are rated with some amount of voltage, such as 12 volts, 24 volts, and so on.

Question 16

In a circuit with ____ power sources, each power source contributes toward the current flow through the resistors.

A)interconnected
B)variable
C)parallel
D)multiple

Question 17

The ____ method applies to circuits with a series of interconnected branches forming loops.

A)loop mesh
B)loop circuit
C)loop current
D)mesh

Question 18

When we say that the contents within an imaginary black box may be thevenized, we mean that they are reduced to the simple equivalent circuit.

Question 19

Occasionally, an electronics technician is confronted with a complex network of emfs and resistors for the purpose of verifying the electrical data for only one of the resistors.

Question 20

When we have multiple power sources and use the superposition theorem to determine just how much each power source contributes toward the branch currents, we do this by considering ____.

A)only one power source at a time
B)all the power sources at one time
C)at least two power sources at a time
D)only half of the power sources