Deck 24: Resistive-Inductive-Capacitive Series Circuits

Question 1

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

A) 25.49 Ω
B) 43 Ω
C) 59 Ω
D) 62.17 Ω

Answer 1

C

Question 2

An RLC series circuit has an applied voltage of 240 volts. R = 51 Ω, XL = 100 Ω, and XC = 32 Ω. The voltage drop across the inductor is 282 V. What is the voltage drop on the resistor?

A) 143.82 V
B) 192.73 V
C) 382.5 V
D) 422.4 V

Answer 2

A

Question 3

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

A) voltage; currents
B) current; voltages

Answer 3

B

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 reactive power of the inductor?

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

Question 5

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?

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

Question 6

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

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

Question 7

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?

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

Question 8

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

A) lagging
B) leading

Question 9

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?

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

Question 10

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

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

Question 11

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

A) lagging
B) leading

Question 12

If a RLC series circuit contains more inductive VARs than capacitive VARs, the circuit has a power factor.

A) lagging
B) leading

Question 13

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?

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

Question 14

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

A) lagging
B) leading

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 voltage drop across the capacitor?

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

Question 16

If a RLC series circuit contains more capacitive VARs than inductive VARs, then the circuit has a power factor.

A) lagging
B) leading

Question 17

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

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

Question 18

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

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

Question 19

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

A) 90°
B) 180°

Question 20

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?

A) 53.05 μF
B) 106.1 μF
C) 132.63 mF
D) 265.25mF