Question 1

Mesh currents flow in a counter-clockwise direction through each loop.

Accepted Answer

A) True 
 B)False

Question 2

Give the two equations, 2I1 = 8 - 5I2 and 0 = 4I2 - 5I1 + 6, in standard form.

Accepted Answer

A)  2I1 + 3I2 = 6 
4I1 - 2I2 = 8 
B)  2I1 + 5I2 = 8 
5I1 - 4I2 = 6 
C)  3I1 + 5I2 = 6
 2I1 + 4I2 = 8 
A)  2I1 + 3I2 = 6 
4I1 - 2I2 = 8 
B)  2I1 + 5I2 = 8 
5I1 - 4I2 = 6 
C)  3I1 + 5I2 = 6
 2I1 + 4I2 = 8

Question 3

The node voltage method for the Bridged-T circuit:

Accepted Answer

A)  creates a source node and a reference node. 
B)  results in two unknowns. 
C)  results in two equations. 
D)  all of the above 
E)  none of the above 
A)  creates a source node and a reference node. 
B)  results in two unknowns. 
C)  results in two equations. 
D)  all of the above 
E)  none of the above

Question 4

The branch method is based on loop currents.

Accepted Answer

A) True 
 B)False

Question 5

-Which statement is true if the loop current I2 is found to be a negative number?

Accepted Answer

A)  The 10 V battery and 10 Ω resistor should have been converted to a current source. 
B)  The determinant used to compute the current should have been third order, not second order. 
C)  The nodal analysis approach should have been used, not the mesh analysis approach. 
D)  The original direction assumed for I2 is wrong. 
A)  The 10 V battery and 10 Ω resistor should have been converted to a current source. 
B)  The determinant used to compute the current should have been third order, not second order. 
C)  The nodal analysis approach should have been used, not the mesh analysis approach. 
D)  The original direction assumed for I2 is wrong.

Question 6

Loop/Mesh analysis uses simultaneous equations to calculate the current through each component.

Accepted Answer

A) True 
 B)False

Question 7

Solve for I1 and I2 in the following equation: 100I1 + 30I2 = 30
75I1 - 45I2 = 20

Accepted Answer

A)  I1 = 28.9 mA, I2 = 3.7 mA 
B)  I1 = 0.289 A, I2 = 0.037 A 
C)  I1 = 0.037 A, I2 = 0.368 A 
D)  I1 = 0.289 A, I2 = -0.037 A 
A)  I1 = 28.9 mA, I2 = 3.7 mA 
B)  I1 = 0.289 A, I2 = 0.037 A 
C)  I1 = 0.037 A, I2 = 0.368 A 
D)  I1 = 0.289 A, I2 = -0.037 A

Question 8

In the equation; 5I1 - 8I2 = 10, which is the coefficient for I1?

Accepted Answer

A)  10 
B)  -8 
C)  5 
D)  8 
A)  10 
B)  -8 
C)  5 
D)  8

Question 9

-Given the circuit in Figure , find the approximate current flow through the 500 Ω resistor.

Accepted Answer

A)  1.69 mA 
B)  3.47 mA 
C)  8.63 mA 
D)  5.16 mA 
A)  1.69 mA 
B)  3.47 mA 
C)  8.63 mA 
D)  5.16 mA

Question 10

The rule, when solving for several unknown quantities is:

Accepted Answer

A)  You must have the same number of equations as there are unknown values. 
B)  You must use substitution. 
C)  You must use determinants. 
D)  Use Ohm's law. 
A)  You must have the same number of equations as there are unknown values. 
B)  You must use substitution. 
C)  You must use determinants. 
D)  Use Ohm's law.

Question 11

The branch current method involves using:

Accepted Answer

A)  loops and nodes 
B)  voltages and nodes 
C)  junctions and nodes 
D)  loops and junctions 
A)  loops and nodes 
B)  voltages and nodes 
C)  junctions and nodes 
D)  loops and junctions

Question 12

-See Figure 9-3. If R = 100 Ω, compute the current through the 50 Ω resistor. Use the delta-wye conversion method.

Accepted Answer

A)  21.5 mA, Left to Right 
B)  31.8 mA, Right to Left 
C)  21.5 mA, Right to Left 
D)  31.8 mA, Left to Right 
A)  21.5 mA, Left to Right 
B)  31.8 mA, Right to Left 
C)  21.5 mA, Right to Left 
D)  31.8 mA, Left to Right

Question 13

The loop current is not necessarily the actual current in a branch.

Accepted Answer

A) True 
 B)False

Question 14

-See Figure 9-5. The equation obtained from performing loop analysis on loop #1 is:

Accepted Answer

A)  3I1 + 7I2 - I1) + 5 V = 0 
B)  3I2 + 7I2 - I1) - 5 V = 0 
C)  3I2 + 7I1 - I2) + 5 V = 0 
D)  -3I2 + 7I2 - I1) + 5 V = 0 
A)  3I1 + 7I2 - I1) + 5 V = 0 
B)  3I2 + 7I2 - I1) - 5 V = 0 
C)  3I2 + 7I1 - I2) + 5 V = 0 
D)  -3I2 + 7I2 - I1) + 5 V = 0

Question 15

What is a loop current?

Accepted Answer

A)  Loop currents are assigned currents 
B)  Loop currents are actual currents. 
A)  Loop currents are assigned currents 
B)  Loop currents are actual currents.

Question 16

-See Figure 9-5. Which equation describes node X?

Accepted Answer

A)  I3 = I2 + I1 
B)  I1 + I2 + I3 = 0 
C)  -I1 - I2 - I3 = 0 
D)  I3 = I2 - I1 
A)  I3 = I2 + I1 
B)  I1 + I2 + I3 = 0 
C)  -I1 - I2 - I3 = 0 
D)  I3 = I2 - I1

Question 17

A loop is a closed current path in a circuit.

Accepted Answer

A) True 
 B)False

Question 18

Simultaneous equations can be solved by which two methods?

Accepted Answer

A)  substitution and loop 
B)  determinant and mesh 
C)  substitution and coefficient 
D)  substitution and determinant 
A)  substitution and loop 
B)  determinant and mesh 
C)  substitution and coefficient 
D)  substitution and determinant

Question 19

To convert from a wye to an equivalent delta, superimpose the two and take the sum of the products of the wye, then divide by the opposite wye resistor from the delta resistor you are trying to find.

Accepted Answer

A) True 
 B)False

Mesh currents flow in a counter-clockwise direction through each loop.

Give the two equations, 2I₁ = 8 - 5I₂ and 0 = 4I₂ - 5I₁ + 6, in standard form.

The node voltage method for the Bridged-T circuit:

The branch method is based on loop currents.

-Which statement is true if the loop current I2 is found to be a negative number?

Loop/Mesh analysis uses simultaneous equations to calculate the current through each component.

Solve for I1 and I2 in the following equation: 100I1 + 30I2 = 30 75I1 - 45I2 = 20

In the equation; 5I1 - 8I2 = 10, which is the coefficient for I1?

-Given the circuit in Figure , find the approximate current flow through the 500 Ω resistor.

The rule, when solving for several unknown quantities is:

The branch current method involves using:

-See Figure 9-3. If R = 100 Ω, compute the current through the 50 Ω resistor. Use the delta-wye conversion method.

The loop current is not necessarily the actual current in a branch.

-See Figure 9-5. The equation obtained from performing loop analysis on loop #1 is:

What is a loop current?

-See Figure 9-5. Which equation describes node X?

A loop is a closed current path in a circuit.

Simultaneous equations can be solved by which two methods?

To convert from a wye to an equivalent delta, superimpose the two and take the sum of the products of the wye, then divide by the opposite wye resistor from the delta resistor you are trying to find.

Quantities and Units

Voltage, Current, and Resistance

Ohms Law

Energy and Power

Series Circuits

Parallel Circuits

Series-Parallel Circuits

Circuit Theorems and Conversions

Magnetism and Electromagnetism

Introduction to Alternating Current and Voltage

Capacitors

Inductors

Transformers

Rc Circuits

Rl Circuits

Rlc Circuits and Resonance

Passive Filters

Circuit Theorems in Ac Analysis

Time Response of Reactive Circuits

Three-Phase Systems in Power Applications

Filters

Exam 9: Branch, Loop, and Node Analyses

Mesh currents flow in a counter-clockwise direction through each loop.

Give the two equations, 2I1 = 8 - 5I2 and 0 = 4I2 - 5I1 + 6, in standard form.

The node voltage method for the Bridged-T circuit:

The branch method is based on loop currents.

-Which statement is true if the loop current I2 is found to be a negative number?

Loop/Mesh analysis uses simultaneous equations to calculate the current through each component.

Solve for I1 and I2 in the following equation: 100I1 + 30I2 = 30 75I1 - 45I2 = 20

In the equation; 5I1 - 8I2 = 10, which is the coefficient for I1?

-Given the circuit in Figure , find the approximate current flow through the 500 Ω resistor.

The rule, when solving for several unknown quantities is:

The branch current method involves using:

-See Figure 9-3. If R = 100 Ω, compute the current through the 50 Ω resistor. Use the delta-wye conversion method.

The loop current is not necessarily the actual current in a branch.

-See Figure 9-5. The equation obtained from performing loop analysis on loop #1 is:

What is a loop current?

-See Figure 9-5. Which equation describes node X?

A loop is a closed current path in a circuit.

Simultaneous equations can be solved by which two methods?

To convert from a wye to an equivalent delta, superimpose the two and take the sum of the products of the wye, then divide by the opposite wye resistor from the delta resistor you are trying to find.

Quantities and Units

Voltage, Current, and Resistance

Ohms Law

Energy and Power

Series Circuits

Parallel Circuits

Series-Parallel Circuits

Circuit Theorems and Conversions

Magnetism and Electromagnetism

Introduction to Alternating Current and Voltage

Capacitors

Inductors

Transformers

Rc Circuits

Rl Circuits

Rlc Circuits and Resonance

Passive Filters

Circuit Theorems in Ac Analysis

Time Response of Reactive Circuits

Three-Phase Systems in Power Applications

Filters

Give the two equations, 2I₁ = 8 - 5I₂ and 0 = 4I₂ - 5I₁ + 6, in standard form.