Question 1

-Given the circuit in Figure 16-6, what is the total circuit current?

Accepted Answer

A)  57.7 mA 
B)  555.1 mA 
C)  4.69 mA 
D)  533.8 mA 
A)  57.7 mA 
B)  555.1 mA 
C)  4.69 mA 
D)  533.8 mA D

Question 2

-Given the circuit in Figure 16-6, what is the current through the resistor?

Accepted Answer

A)  21.8 mA 
B)  1100 mA 
C)  45.3 mA 
D)  207.5 mA 
A)  21.8 mA 
B)  1100 mA 
C)  45.3 mA 
D)  207.5 mA A

Question 3

-Given the circuit in Figure 16-3, what is the voltage rms) across the inductor?

Accepted Answer

A)  4 V 
B)  7.07 V 
C)  10 V 
D)  6 V 
A)  4 V 
B)  7.07 V 
C)  10 V 
D)  6 V D

Question 4

-In the circuit in Figure 16-1, increasing the frequency will cause an increase in circuit current.

Accepted Answer

A) True 
 B)False

Question 5

-Given the circuit in Figure 16-5, what is the total circuit current?

Accepted Answer

A)  5 A 
B)  3 A 
C)  4.69 mA 
D)  2.24 A 
A)  5 A 
B)  3 A 
C)  4.69 mA 
D)  2.24 A

Question 6

What is the Impedance of the circuit in Figure , expressed in polar form?

Accepted Answer

A)  120   32° Ω 
B)  120   -58° Ω 
C)  141.5   -58° Ω 
D)  141.5   58° Ω 
A)  120   32° Ω 
B)  120   -58° Ω 
C)  141.5   -58° Ω 
D)  141.5   58° Ω

Question 7

-In the circuit in Figure 16-1, increasing the inductance value will cause an increase in circuit current.

Accepted Answer

A) True 
 B)False

Question 8

Figure 16-7
-In Figure 16-7, the plot of the sine wave could represent the and the cosine wave could represent the
Relationship in a purely inductive circuit

Accepted Answer

A)  current, voltage 
B)  current, impedance 
C)  voltage, current 
D)  voltage, impedance 
A)  current, voltage 
B)  current, impedance 
C)  voltage, current 
D)  voltage, impedance

Question 9

For voltage-current vector diagrams relating to series RL circuits, current is the reference vector because it is the same throughout the circuit.

Accepted Answer

A) True 
 B)False

Question 10

Figure 16-8
-In Figure 16-8, for the voltage across the resistor to equal the voltage across the inductor:

Accepted Answer

A)  XL must be smaller than R 
B)  XL must equal R. 
C)  XL must be larger than R 
D)  impedance must be zero. 
A)  XL must be smaller than R 
B)  XL must equal R. 
C)  XL must be larger than R 
D)  impedance must be zero.

Question 11

-Given the circuit in Figure 16-5, what is the current through the inductor?

Accepted Answer

A)  1.0 A 
B)  2.0 A 
C)  3.0 A 
D)  0.707 A 
A)  1.0 A 
B)  2.0 A 
C)  3.0 A 
D)  0.707 A

Question 12

-In the circuit in Figure 16-2, increasing the inductance value will cause an increase in circuit current.

Accepted Answer

A) True 
 B)False

Question 13

-Given the circuit in Figure , what is the total circuit impedance?

Accepted Answer

A)  569 Ω 
B)  26.8 Ω 
C)  268 Ω 
D)  22.6 Ω 
A)  569 Ω 
B)  26.8 Ω 
C)  268 Ω 
D)  22.6 Ω

Question 14

What is the phase angle of the circuit in Figure 16-4?

Accepted Answer

A)  32° 
B)  -32° 
C)  58° 
D)  -58° 
A)  32° 
B)  -32° 
C)  58° 
D)  -58°

Question 15

-Given the circuit in Figure 16-3, what is the voltage rms) across the resistor?

Accepted Answer

A)  4 V 
B)  7.07 V 
C)  3 V 
D)  8 V 
A)  4 V 
B)  7.07 V 
C)  3 V 
D)  8 V

Question 16

A circuit has an apparent power of 240 VA, and a power factor of 0.943. What is the true power dissipated by the circuit?

Accepted Answer

A)  13.6 W 
B)  226 W 
C)  84.5 W 
D)  240 W 
A)  13.6 W 
B)  226 W 
C)  84.5 W 
D)  240 W

Question 17

A 12 mH inductor is used in a circuit with a 10 kHz source. What is the inductive reactance?

Accepted Answer

A)  500 ohms 
B)  754 ohms 
C)  127 ohms 
D)  1.33 k ohms 
A)  500 ohms 
B)  754 ohms 
C)  127 ohms 
D)  1.33 k ohms

Question 18

In a series RL circuit where R = 100 Ω and XL = 50 Ω. What is the total impedance of this circuit?

Accepted Answer

A)  111.8 $\Omega \angle$
 26.6° 
B)  111.8 $\Omega \angle$
 -26.6° 
C)  111.8 $\Omega \angle$
 -63.4° 
D)  111.8 $\Omega \angle$
 63.4° 
A)  111.8 $\Omega \angle$
 26.6° 
B)  111.8 $\Omega \angle$
 -26.6° 
C)  111.8 $\Omega \angle$
 -63.4° 
D)  111.8 $\Omega \angle$
 63.4°

Question 19

For series AC circuits containing both resistance and inductive reactance, total opposition to current flow cannot be found by simply adding ohmic values or oppositions to current.

Accepted Answer

A) True 
 B)False

Question 20

The impedance of a series resistor/inductor circuit is defined as: 56 Ω + j75 Ω. What is the resistance value?

Accepted Answer

A)  93.6 Ω 
B)  56 Ω 
C)  75 Ω 
D)  19 Ω 
A)  93.6 Ω 
B)  56 Ω 
C)  75 Ω 
D)  19 Ω

Exam 16: Rl Circuits

-Given the circuit in Figure 16-6, what is the total circuit current?

-Given the circuit in Figure 16-6, what is the current through the resistor?

-Given the circuit in Figure 16-3, what is the voltage rms) across the inductor?

-In the circuit in Figure 16-1, increasing the frequency will cause an increase in circuit current.

-Given the circuit in Figure 16-5, what is the total circuit current?

What is the Impedance of the circuit in Figure , expressed in polar form?

-In the circuit in Figure 16-1, increasing the inductance value will cause an increase in circuit current.

Figure 16-7 -In Figure 16-7, the plot of the sine wave could represent the and the cosine wave could represent the Relationship in a purely inductive circuit

For voltage-current vector diagrams relating to series RL circuits, current is the reference vector because it is the same throughout the circuit.

Figure 16-8 -In Figure 16-8, for the voltage across the resistor to equal the voltage across the inductor:

-Given the circuit in Figure 16-5, what is the current through the inductor?

-In the circuit in Figure 16-2, increasing the inductance value will cause an increase in circuit current.

-Given the circuit in Figure , what is the total circuit impedance?

What is the phase angle of the circuit in Figure 16-4?

-Given the circuit in Figure 16-3, what is the voltage rms) across the resistor?

A circuit has an apparent power of 240 VA, and a power factor of 0.943. What is the true power dissipated by the circuit?

A 12 mH inductor is used in a circuit with a 10 kHz source. What is the inductive reactance?

In a series RL circuit where R = 100 Ω and XL = 50 Ω. What is the total impedance of this circuit?

For series AC circuits containing both resistance and inductive reactance, total opposition to current flow cannot be found by simply adding ohmic values or oppositions to current.

The impedance of a series resistor/inductor circuit is defined as: 56 Ω + j75 Ω. What is the resistance value?

Quantities and Units

Voltage, Current, and Resistance

Ohms Law

Energy and Power

Series Circuits

Parallel Circuits

Series-Parallel Circuits

Circuit Theorems and Conversions

Branch, Loop, and Node Analyses

Magnetism and Electromagnetism

Introduction to Alternating Current and Voltage

Capacitors

Inductors

Transformers

Rc Circuits

Rlc Circuits and Resonance

Passive Filters

Circuit Theorems in Ac Analysis

Time Response of Reactive Circuits

Three-Phase Systems in Power Applications

Filters