Question 1

If the voltage is behind the current i n a RLC series circuit,  the power factor is referred to as _____.

Accepted Answer

A)  lagging 
B)  leading 
A)  lagging 
B)  leading B

Question 2

An RLC series circuit is powered by a 120-V, 60-Hz supply. It contains an inductor that has an inductive reactance of 50 Ω and a wire resistance of 10 Ω . What is the inductance of the inductor?

Accepted Answer

A)  0.0265 H 
B)  0.133 H 
C)  0.259 H 
D)  0.335 H 
A)  0.0265 H 
B)  0.133 H 
C)  0.259 H 
D)  0.335 H B

Question 3

The difference between the two frequencies at which the current is 0.707 of the maximum current value is the _____.

Accepted Answer

A)  quality 
B)  power factor 
C)  bandwidth 
D)  resonance 
A)  quality 
B)  power factor 
C)  bandwidth 
D)  resonance C

Question 4

An RLC series circuit has an applied voltage of 240 volts. R = 48 Ω , XL = 100 Ω , XC = 36 Ω , and Z = 80 Ω . What is the voltage drop across the capacitor?

Accepted Answer

A)  40 V 
B)  108 V 
C)  300 V 
D)  444 V 
A)  40 V 
B)  108 V 
C)  300 V 
D)  444 V

Question 5

In a RLC series circuit, the point at which XL and XC are equal is called _____.

Accepted Answer

A)  equality 
B)  resonance 
C)  inductance 
D)  bandwidth 
A)  equality 
B)  resonance 
C)  inductance 
D)  bandwidth

Question 6

An RLC series circuit has R = 56 Ω , XL = 64 Ω , and XC = 37 Ω . What is the value of Z?

Accepted Answer

A)  25.49 Ω 
B)  43 Ω 
C)  59 Ω 
D)  62.17 Ω 
A)  25.49 Ω 
B)  43 Ω 
C)  59 Ω 
D)  62.17 Ω

Question 7

In a RLC series circuit, _____ is the same through all components and the _____ are out of phase.

Accepted Answer

A)  voltage; currents 
B)  current; voltages 
A)  voltage; currents 
B)  current; voltages

Question 8

Because inductive reactance and capacitive reactance are _____ out of phase with each other, they subtract from each other in an AC circuit.

Accepted Answer

A)  90° 
B)  180° 
A)  90° 
B)  180°

Question 9

An RLC series circuit has R = 42 Ω , XL = 80 Ω , and XC = 24 Ω . What is angle theta?

Accepted Answer

A)  36.87 ° 
B)  53.13 ° 
C)  59.74 ° 
D)  62.33 ° 
A)  36.87 ° 
B)  53.13 ° 
C)  59.74 ° 
D)  62.33 °

Question 10

An RLC series circuit has an applied voltage of 277 volts. The current through the resistor is 3.5 A. What is the apparent power of the circuit?

Accepted Answer

A)  210.92 VA 
B)  220.61 VA 
C)  790.14 VA 
D)  969.5 VA 
A)  210.92 VA 
B)  220.61 VA 
C)  790.14 VA 
D)  969.5 VA

Question 11

An RLC series circuit has an applied voltage of 240 volts. R = 48 Ω , XL = 100 Ω , XC = 36 Ω , and Z = 80 Ω . What is the voltage drop across the inductor?

Accepted Answer

A)  140 V 
B)  208 V 
C)  300 V 
D)  344 V 
A)  140 V 
B)  208 V 
C)  300 V 
D)  344 V

Question 12

An RLC series circuit has an applied voltage of 240 volts. R = 48 Ω and the voltage across it is 96 V. What is the circuit power factor?

Accepted Answer

A)  10% 
B)  20% 
C)  40% 
D)  50% 
A)  10% 
B)  20% 
C)  40% 
D)  50%

Question 13

An RLC series circuit is powered by a 120-V, 60-Hz supply. It contains a capacitor that has an XL of 50 Ω . What is the capacitance of the capacitor?

Accepted Answer

A)  53.05 μ F 
B)  106.1 μ F 
C)  132.63 mF 
D)  265.25mF 
A)  53.05 μ F 
B)  106.1 μ F 
C)  132.63 mF 
D)  265.25mF

Question 14

An RLC series circuit has an applied voltage of 240 volts. R = 48 Ω , XL = 100 Ω , XC = 36 Ω , and Z = 80 Ω . What is the total current?

Accepted Answer

A)  1 A 
B)  2 A 
C)  3 A 
D)  4 A 
A)  1 A 
B)  2 A 
C)  3 A 
D)  4 A

Question 15

An RLC series circuit has an applied voltage of 240 volts. R = 48 Ω , XL = 100 Ω , XC = 36 Ω , and Z = 80 Ω . What is the reactive power of the capacitor?

Accepted Answer

A)  100 VARs 
B)  208 VARs 
C)  324 VARs 
D)  520 VARs 
A)  100 VARs 
B)  208 VARs 
C)  324 VARs 
D)  520 VARs

Question 16

If the voltage in a RLC series circuit is ahead of the current, the power factor is referred to as _____.

Accepted Answer

A)  lagging 
B)  leading 
A)  lagging 
B)  leading

Question 17

An RLC series circuit has an applied voltage of 240 volts. R = 48 Ω , XL = 100 Ω , XC = 36 Ω , and Z = 80 Ω . What is the reactive power of the inductor?

Accepted Answer

A)  644 VARs 
B)  720 VARs 
C)  808 VARs 
D)  900 VARs 
A)  644 VARs 
B)  720 VARs 
C)  808 VARs 
D)  900 VARs

Question 18

An RLC series circuit has an applied voltage of 120 volts. R = 42 Ω , XL = 80 Ω , and XC = 24 Ω . What is the true power?

Accepted Answer

A)  18 W 
B)  60 W 
C)  42.86 W 
D)  123.43 W 
A)  18 W 
B)  60 W 
C)  42.86 W 
D)  123.43 W

Question 19

If the current leads the voltage i n a RLC series circuit,  the power factor is referred to as _____.

Accepted Answer

A)  lagging 
B)  leading 
A)  lagging 
B)  leading

Question 20

In an RLC series circuit, the ratio of resistance, inductance, and capacitance determines how much the applied _____ leads or lags the circuit current.

Accepted Answer

A)  amperage 
B)  wattage 
C)  voltage 
D)  impedance 
A)  amperage 
B)  wattage 
C)  voltage 
D)  impedance

Exam 24: Resistive-Inductive-Capacitive Series Circuits

If the voltage is behind the current i n a RLC series circuit, the power factor is referred to as _____.

An RLC series circuit is powered by a 120-V, 60-Hz supply. It contains an inductor that has an inductive reactance of 50 Ω and a wire resistance of 10 Ω . What is the inductance of the inductor?

The difference between the two frequencies at which the current is 0.707 of the maximum current value is the _____.

An RLC series circuit has an applied voltage of 240 volts. R = 48 Ω , XL = 100 Ω , XC = 36 Ω , and Z = 80 Ω . What is the voltage drop across the capacitor?

In a RLC series circuit, the point at which XL and XC are equal is called _____.

An RLC series circuit has R = 56 Ω , XL = 64 Ω , and XC = 37 Ω . What is the value of Z?

In a RLC series circuit, _____ is the same through all components and the _____ are out of phase.

Because inductive reactance and capacitive reactance are _____ out of phase with each other, they subtract from each other in an AC circuit.

An RLC series circuit has R = 42 Ω , XL = 80 Ω , and XC = 24 Ω . What is angle theta?

An RLC series circuit has an applied voltage of 277 volts. The current through the resistor is 3.5 A. What is the apparent power of the circuit?

An RLC series circuit has an applied voltage of 240 volts. R = 48 Ω , XL = 100 Ω , XC = 36 Ω , and Z = 80 Ω . What is the voltage drop across the inductor?

An RLC series circuit has an applied voltage of 240 volts. R = 48 Ω and the voltage across it is 96 V. What is the circuit power factor?

An RLC series circuit is powered by a 120-V, 60-Hz supply. It contains a capacitor that has an XL of 50 Ω . What is the capacitance of the capacitor?

An RLC series circuit has an applied voltage of 240 volts. R = 48 Ω , XL = 100 Ω , XC = 36 Ω , and Z = 80 Ω . What is the total current?

An RLC series circuit has an applied voltage of 240 volts. R = 48 Ω , XL = 100 Ω , XC = 36 Ω , and Z = 80 Ω . What is the reactive power of the capacitor?

If the voltage in a RLC series circuit is ahead of the current, the power factor is referred to as _____.

An RLC series circuit has an applied voltage of 240 volts. R = 48 Ω , XL = 100 Ω , XC = 36 Ω , and Z = 80 Ω . What is the reactive power of the inductor?

An RLC series circuit has an applied voltage of 120 volts. R = 42 Ω , XL = 80 Ω , and XC = 24 Ω . What is the true power?

If the current leads the voltage i n a RLC series circuit, the power factor is referred to as _____.

In an RLC series circuit, the ratio of resistance, inductance, and capacitance determines how much the applied _____ leads or lags the circuit current.

Atomic Structure

Electrical Quantities and Ohms Law

Static Electricity

Magnetism

Resistors

Series Circuits

Parallel Circuits

Combination Circuits

Kirchhoffs Law, Thevenins and Nortons Theorems

Measuring Instruments

Using Wire Tables and Determining Conductor Sizes

Conduction in Liquids and Gases

Batteries and Other Sources of Electricity

Magnetic Induction

Basic Trigonometry and Vectors

Alternating Current

Inductance in Alternating Current Circuits

Resistive-Inductive Series Circuits

Resistive-Inductive Parallel Circuits

Capacitors

Capacitance in Alternating Current Circuits

Resistive-Capacitive Series Circuits

Resistive-Capacitive Parallel Circuits

Resistive-Inductive-Capacitive Parallel Circuits

Filters

Three-Phase Circuits

Single-Phase Transformers

Three-Phase Transformers

Direct Current Generators

Direct Current Motors

Three-Phase Alternators

Three-Phase Motors

Single-Phase Motors

Harmonics

Filters

An RLC series circuit has an applied voltage of 240 volts. R = 48 Ω , X_L = 100 Ω , X_C = 36 Ω , and Z = 80 Ω . What is the voltage drop across the capacitor?

In a RLC series circuit, the point at which X_L and X_C are equal is called _____.

An RLC series circuit has R = 56 Ω , X_L = 64 Ω , and X_C = 37 Ω . What is the value of Z?

In a RLC series circuit, _ is the same through all components and the _ are out of phase.

An RLC series circuit has R = 42 Ω , X_L = 80 Ω , and X_C = 24 Ω . What is angle theta?

An RLC series circuit has an applied voltage of 240 volts. R = 48 Ω , X_L = 100 Ω , X_C = 36 Ω , and Z = 80 Ω . What is the voltage drop across the inductor?

An RLC series circuit is powered by a 120-V, 60-Hz supply. It contains a capacitor that has an X_L of 50 Ω . What is the capacitance of the capacitor?

An RLC series circuit has an applied voltage of 240 volts. R = 48 Ω , X_L = 100 Ω , X_C = 36 Ω , and Z = 80 Ω . What is the total current?

An RLC series circuit has an applied voltage of 240 volts. R = 48 Ω , X_L = 100 Ω , X_C = 36 Ω , and Z = 80 Ω . What is the reactive power of the capacitor?

An RLC series circuit has an applied voltage of 240 volts. R = 48 Ω , X_L = 100 Ω , X_C = 36 Ω , and Z = 80 Ω . What is the reactive power of the inductor?

An RLC series circuit has an applied voltage of 120 volts. R = 42 Ω , X_L = 80 Ω , and X_C = 24 Ω . What is the true power?