Exam 25: Resistive Inductive Capacitive Parallel Circuits

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In a parallel LC circuit, the difference in frequencies above and below resonance at which impedance is 0.707 of the maximum is called the _____ of the circuit.

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Question 1

Correct Answer:

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An RLC parallel circuit has an applied voltage of 240 volts. R = 60 Ω , X_L = 100 Ω , and X_C = 32 Ω . What is the resistive current?

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Question 2

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An RLC parallel circuit has an applied voltage of 240 volts. R = 48 Ω , X_L = 100 Ω , and X_C = 36 Ω . What is the circuit impedance (Z)?

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Question 3

Correct Answer:

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To correct the power factor to 100 percent an equal amount of capacitive VARs would be connected in _____ with the motor.

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Question 4

For parallel resonant circuits, the correct formula relating I_TANK, Q, and I_LINE is _____.

(Multiple Choice)

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Question 5

An RLC series circuit has a 60-Hz, 120 V applied voltage. R = 50 Ω , X_L = 137 Ω , and X_C = 160 Ω . What is the inductance in the circuit?

(Multiple Choice)

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Question 6

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

(Multiple Choice)

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Question 7

An RLC parallel circuit has an applied voltage of 240 V. R = 48 Ω , X_L = 100 Ω , and X_C = 36 Ω . What is angle theta?

(Multiple Choice)

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Question 8

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

(Multiple Choice)

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Question 9

An RLC parallel circuit has an applied voltage of 240 volts. R = 60 Ω , X_L = 20 Ω , and X_C = 36 Ω . What is the capacitive current?

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Question 10

An RLC parallel circuit has an applied voltage of 208 volts. R = 42 Ω , X_L = 52 Ω , and X_C = 18 Ω . What is the inductive current?

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Question 11

A parallel tank circuit operating at its resonant frequency has an impedance of 10,000 Ω . At the points on either side of the resonant frequency that define the bandwidth, the impedance is approximately _____.

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Question 12

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

(Multiple Choice)

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Question 13

If the power factor is corrected exactly so that the circuit is purely resistive, the power factor has a value of _____.

(Multiple Choice)

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Question 14

An RLC parallel circuit has an applied voltage of 277 volts. R = 82 Ω , X_L = 50 Ω , and X_C = 124 Ω . What is the true power?

(Multiple Choice)

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Question 15

An RLC parallel circuit has an applied voltage of 208 volts. R = 68 Ω , X_L = 87 Ω , and X_C = 81 Ω . What are the VARs_C?

(Multiple Choice)

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Question 16

An RLC parallel circuit has an applied voltage of 208 V. R = 68 Ω , X_L = 87 Ω , and X_C = 81 Ω . What is the power factor?

(Multiple Choice)

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Question 17

An RLC series circuit has a 60-Hz, 120 V applied voltage. R = 75 Ω , X_L = 100 Ω , and X_C = 89 Ω . What is the circuit capacitance?

(Multiple Choice)

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Question 18

A parallel circuit at resonance has I_TANK = 1.00 A, I_LINE = 0.05 A, Q = 20, and a voltage across the tank of 500 V. What is the impedance of the tank?

(Multiple Choice)

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Question 19

An RLC parallel circuit has an applied voltage of 240 V. R = 60 Ω , X_L = 80 Ω , and X_C = 40 Ω . What is the apparent power?

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Question 20

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Exam 25: Resistive Inductive Capacitive Parallel Circuits

In a parallel LC circuit, the difference in frequencies above and below resonance at which impedance is 0.707 of the maximum is called the _____ of the circuit.

An RLC parallel circuit has an applied voltage of 240 volts. R = 60 Ω , XL = 100 Ω , and XC = 32 Ω . What is the resistive current?

An RLC parallel circuit has an applied voltage of 240 volts. R = 48 Ω , XL = 100 Ω , and XC = 36 Ω . What is the circuit impedance (Z)?

To correct the power factor to 100 percent an equal amount of capacitive VARs would be connected in _____ with the motor.

For parallel resonant circuits, the correct formula relating ITANK, Q, and ILINE is _____.

An RLC series circuit has a 60-Hz, 120 V applied voltage. R = 50 Ω , XL = 137 Ω , and XC = 160 Ω . What is the inductance in the circuit?

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

An RLC parallel circuit has an applied voltage of 240 V. R = 48 Ω , XL = 100 Ω , and XC = 36 Ω . What is angle theta?

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

An RLC parallel circuit has an applied voltage of 240 volts. R = 60 Ω , XL = 20 Ω , and XC = 36 Ω . What is the capacitive current?

An RLC parallel circuit has an applied voltage of 208 volts. R = 42 Ω , XL = 52 Ω , and XC = 18 Ω . What is the inductive current?

A parallel tank circuit operating at its resonant frequency has an impedance of 10,000 Ω . At the points on either side of the resonant frequency that define the bandwidth, the impedance is approximately _____.

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

If the power factor is corrected exactly so that the circuit is purely resistive, the power factor has a value of _____.

An RLC parallel circuit has an applied voltage of 277 volts. R = 82 Ω , XL = 50 Ω , and XC = 124 Ω . What is the true power?

An RLC parallel circuit has an applied voltage of 208 volts. R = 68 Ω , XL = 87 Ω , and XC = 81 Ω . What are the VARsC?

An RLC parallel circuit has an applied voltage of 208 V. R = 68 Ω , XL = 87 Ω , and XC = 81 Ω . What is the power factor?

An RLC series circuit has a 60-Hz, 120 V applied voltage. R = 75 Ω , XL = 100 Ω , and XC = 89 Ω . What is the circuit capacitance?

A parallel circuit at resonance has ITANK = 1.00 A, ILINE = 0.05 A, Q = 20, and a voltage across the tank of 500 V. What is the impedance of the tank?

An RLC parallel circuit has an applied voltage of 240 V. R = 60 Ω , XL = 80 Ω , and XC = 40 Ω . What is the apparent power?

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An RLC parallel circuit has an applied voltage of 240 volts. R = 60 Ω , X_L = 100 Ω , and X_C = 32 Ω . What is the resistive current?

An RLC parallel circuit has an applied voltage of 240 volts. R = 48 Ω , X_L = 100 Ω , and X_C = 36 Ω . What is the circuit impedance (Z)?

For parallel resonant circuits, the correct formula relating I_TANK, Q, and I_LINE is _____.

An RLC series circuit has a 60-Hz, 120 V applied voltage. R = 50 Ω , X_L = 137 Ω , and X_C = 160 Ω . What is the inductance in the circuit?

An RLC parallel circuit has an applied voltage of 240 V. R = 48 Ω , X_L = 100 Ω , and X_C = 36 Ω . What is angle theta?

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

An RLC parallel circuit has an applied voltage of 240 volts. R = 60 Ω , X_L = 20 Ω , and X_C = 36 Ω . What is the capacitive current?

An RLC parallel circuit has an applied voltage of 208 volts. R = 42 Ω , X_L = 52 Ω , and X_C = 18 Ω . What is the inductive current?

An RLC parallel circuit has an applied voltage of 277 volts. R = 82 Ω , X_L = 50 Ω , and X_C = 124 Ω . What is the true power?

An RLC parallel circuit has an applied voltage of 208 volts. R = 68 Ω , X_L = 87 Ω , and X_C = 81 Ω . What are the VARs_C?

An RLC parallel circuit has an applied voltage of 208 V. R = 68 Ω , X_L = 87 Ω , and X_C = 81 Ω . What is the power factor?

An RLC series circuit has a 60-Hz, 120 V applied voltage. R = 75 Ω , X_L = 100 Ω , and X_C = 89 Ω . What is the circuit capacitance?

A parallel circuit at resonance has I_TANK = 1.00 A, I_LINE = 0.05 A, Q = 20, and a voltage across the tank of 500 V. What is the impedance of the tank?

An RLC parallel circuit has an applied voltage of 240 V. R = 60 Ω , X_L = 80 Ω , and X_C = 40 Ω . What is the apparent power?