Question 1

A node is a junction of two or more current paths.

Accepted Answer

A) True 
 B)False

Question 2

-See Figure 9-4. If nodal analysis were to be used to solve for unknown voltages in this circuit, how many nodes would be needed including the reference node) ?

Accepted Answer

A)   1
B)   2
C)   3
D)   4E) B) and D)
F) A) and D)

Question 3

What is the characteristic determinant from the following equations? 5I1 - 8I2 = 10
L0I1 + 5I2 = 20

Accepted Answer

A)   10
B)   55
C)   105
D)   -90E) A) and B)
F) B) and C)

Question 4

Simultaneous equations can be solved by substitution or by using determinants.

Accepted Answer

A) True 
 B)False

Question 5

What circuit law is used in the mesh current method?

Accepted Answer

A)   Kirchhoff's current law
B)   Kirchhoff's voltage law
C)   the power law
D)   Ohm's lawE) B) and C)
F) All of the above

Question 6

Which of the following are useful for analyzing circuits with two or more voltage or current sources?

Accepted Answer

A)   mesh current method
B)   node-voltage method
C)   branch current method
D)   all of the aboveE) A) and B)
F) A) and C)

Question 7

-See Figure 9-3. Using R = 100 Ω, compute the current through the 50 Ω resistor.

Accepted Answer

A)   2.14 mA
B)   21.47 µA
C)   21.47 A
D)   21.47 mAE) B) and D)
F) All of the above D

Question 8

-Given the circuit in Figure , find the approximate voltage drop across the 68 Ω resistor.

Accepted Answer

A)   1.36 V
B)   14.28 V
C)   11.69 V
D)   12.92 VE) A) and B)
F) C) and D)

Question 9

An advantage of mesh currents over branch currents is:

Accepted Answer

A)   The mesh current method can be applied to circuits with any number of loops.
B)   The mesh current method requires fewer equations than the branch method.
C)   There are no negative answers for current.
D)   There are no advantages.E) B) and D)
F) C) and D) B

Question 10

-In Figure  what value of R will result in a balanced bridge?

Accepted Answer

A)   60 Ω
B)   300 Ω
C)   30 Ω
D)   3 ΩE) None of the above
F) A) and B)

Question 11

What circuit law is used in the node voltage method?

Accepted Answer

A)   Kirchhoff's current law
B)   Kirchhoff's voltage law
C)   Ohm's law
D)   the power lawE) B) and D)
F) C) and D)

Question 12

Delta to wye configurations are used in bridge circuits.

Accepted Answer

A) True 
 B)False

Question 13

The loop current direction must be drawn:

Accepted Answer

A)   counter-clockwise
B)   clockwise
C)   It doesn't matter, as long as you are consistent.D) None of the above
E) All of the above

Question 14

A node is where the voltage is connected to the circuit.

Accepted Answer

A) True 
 B)False  False

Question 15

2 B)  7 Ω)  I1 + I2 C)  7 Ω)  I1 D)  7 Ω)  I1 - I2" class="answers-bank-image d-inline" rel="preload" > 
-Which of the following terms describes the voltage across the 7 Ω resistor when using mesh analysis?

Accepted Answer

A)   7 Ω)  I2
B)   7 Ω)  I1 + I2
C)   7 Ω)  I1
D)   7 Ω)  I1 - I2E) C) and D)
F) A) and B)

Question 16

A branch current is an current through a branch, whereas: loop currents are .

Accepted Answer

A)   actual, circuit dependent
B)   assumed, mathematical quantities
C)   actual, mathematical
D)   both A and BE) B) and D)
F) C) and D)

Question 17

How many general steps are used in applying the branch current method?

Accepted Answer

A)   5
B)   4
C)   1
D)   3E) B) and C)
F) A) and D)

Question 18

A branch is a path that connects:

Accepted Answer

A)   two components
B)   two multiple loop circuits
C)   two loops
D)   two nodesE) C) and D)
F) A) and C)

Question 19

What is the significance of a negative sign in the answer for current, when solving network problems?

Accepted Answer

A)   It means you must chose the correct direction for the actual, net, current flow.
B)   It means that the negative current flows in the opposite direction from the assigned current.
C)   It means you must subtract the negative value from the other value.
D)   It means there is a negative current flow.E) None of the above
F) A) and D)

Question 20

1 + 7 Ω) I2 B)  0 = +5 V - 3 Ω) I1 + 7 Ω) I2 C)  0 = +5 V + 3 Ω) I1 - 7 Ω) I2 D)  0 = -5 V - 3 Ω) I1 - 7 Ω) I2" class="answers-bank-image d-inline" rel="preload" > 
- If the branch current method is used, which equation describes loop 1?

Accepted Answer

A)   0 = -5 V - 3 Ω) I1 + 7 Ω) I2
B)   0 = +5 V - 3 Ω) I1 + 7 Ω) I2
C)   0 = +5 V + 3 Ω) I1 - 7 Ω) I2
D)   0 = -5 V - 3 Ω) I1 - 7 Ω) I2E) B) and C)
F) None of the above

Exam 9: Branch, Loop, and Node Analyses

A node is a junction of two or more current paths.

Correct AnswerverifiedShow Answer

-See Figure 9-4. If nodal analysis were to be used to solve for unknown voltages in this circuit, how many nodes would be needed including the reference node) ?

Correct AnswerverifiedShow Answer

What is the characteristic determinant from the following equations? 5I1 - 8I2 = 10 L0I1 + 5I2 = 20

Correct AnswerverifiedShow Answer

Simultaneous equations can be solved by substitution or by using determinants.

Correct AnswerverifiedShow Answer

What circuit law is used in the mesh current method?

Correct AnswerverifiedShow Answer

Which of the following are useful for analyzing circuits with two or more voltage or current sources?

Correct AnswerverifiedShow Answer

-See Figure 9-3. Using R = 100 Ω, compute the current through the 50 Ω resistor.

Correct AnswerverifiedD

-Given the circuit in Figure , find the approximate voltage drop across the 68 Ω resistor.

Correct AnswerverifiedShow Answer

An advantage of mesh currents over branch currents is:

Correct AnswerverifiedB

-In Figure what value of R will result in a balanced bridge?

Correct AnswerverifiedShow Answer

What circuit law is used in the node voltage method?

Correct AnswerverifiedShow Answer

Delta to wye configurations are used in bridge circuits.

Correct AnswerverifiedShow Answer

The loop current direction must be drawn:

Correct AnswerverifiedShow Answer

A node is where the voltage is connected to the circuit.

Correct AnswerverifiedFalse

-Which of the following terms describes the voltage across the 7 Ω resistor when using mesh analysis?

Correct AnswerverifiedShow Answer

A branch current is an current through a branch, whereas: loop currents are .

Correct AnswerverifiedShow Answer

How many general steps are used in applying the branch current method?

Correct AnswerverifiedShow Answer

A branch is a path that connects:

Correct AnswerverifiedShow Answer

What is the significance of a negative sign in the answer for current, when solving network problems?

Correct AnswerverifiedShow Answer

- If the branch current method is used, which equation describes loop 1?

Correct AnswerverifiedShow Answer

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D

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B

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False

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