Question 1

In a parallel circuit, ET = 240 V, R = 47 kΩ, and XL = 50 kΩ. What is the reactive power?

Accepted Answer

A)  0.54 VARs 
B)  0.89 VARs 
C)  1.15 VARs 
D)  1.23 VARs 
A)  0.54 VARs 
B)  0.89 VARs 
C)  1.15 VARs 
D)  1.23 VARs C

Question 2

In a parallel circuit, the current flow through the inductor will be .

Accepted Answer

A)  in phase 
B)  180° out of phase 
C)  90° out of phase with the voltage 
D)  less than 90° out of phase with the resistor current lagging 
A)  in phase 
B)  180° out of phase 
C)  90° out of phase with the voltage 
D)  less than 90° out of phase with the resistor current lagging C

Question 3

In a parallel circuit, ET = 240 V, R = 30 Ω, and XL = 40 Ω. What is IT?

Accepted Answer

A)  3.43 A 
B)  6 A 
C)  8.43 A 
D)  10 A 
A)  3.43 A 
B)  6 A 
C)  8.43 A 
D)  10 A A

Question 4

In a parallel circuit, ET = 240 V, R = 400 Ω, and XL = 300 Ω. What is P?

Accepted Answer

A)  82.29 W 
B)  115.2 W 
C)  122 W 
D)  144 W 
A)  82.29 W 
B)  115.2 W 
C)  122 W 
D)  144 W

Question 5

In a parallel circuit, the voltage across the resistor and the voltage across the inductor are .

Accepted Answer

A)  in phase 
B)  180° out of phase 
C)  less than 90° out of phase with the resistor voltage leading 
D)  less than 90° out of phase with the resistor voltage lagging 
A)  in phase 
B)  180° out of phase 
C)  less than 90° out of phase with the resistor voltage leading 
D)  less than 90° out of phase with the resistor voltage lagging

Question 6

In a parallel circuit, the supply voltage is 120 V, 60 Hz. The resistance is 30 Ω and the inductive reactance is 40 Ω. What is the value of the inductor?

Accepted Answer

A)  0.106 H 
B)  0.196 H 
C)  0.233 H 
D)  0.363 H 
A)  0.106 H 
B)  0.196 H 
C)  0.233 H 
D)  0.363 H

Question 7

In a parallel circuit, ET = 240 V, R = 330 Ω, and XL = 420 Ω. What is Z?

Accepted Answer

A)  120 Ω 
B)  170 Ω 
C)  259.62 Ω 
D)  534.13 Ω 
A)  120 Ω 
B)  170 Ω 
C)  259.62 Ω 
D)  534.13 Ω

Question 8

In a parallel circuit, ET = 208 V, R = 33 kΩ, and XL = 82 kΩ. What is the apparent power?

Accepted Answer

A)  0.14 VA 
B)  0.31 VA 
C)  1.22 VA 
D)  1.41 VA 
A)  0.14 VA 
B)  0.31 VA 
C)  1.22 VA 
D)  1.41 VA

Question 9

In a parallel circuit, ET = 120 V, R = 470 Ω, and XL = 500 Ω. What is the reactive power?

Accepted Answer

A)  20.98 VARs 
B)  28.8 VARs 
C)  34.85 VARs 
D)  39.64 VARs 
A)  20.98 VARs 
B)  28.8 VARs 
C)  34.85 VARs 
D)  39.64 VARs

Question 10

In a parallel circuit, ET = 120 V, R = 1500 Ω, and XL = 1000 Ω. What is the apparent power?

Accepted Answer

A)  17.31 VA 
B)  24 VA 
C)  29.6 VA 
D)  34.40 VA 
A)  17.31 VA 
B)  24 VA 
C)  29.6 VA 
D)  34.40 VA

Question 11

In a parallel circuit, ET = 120 V, R = 30 Ω, and XL = 40 Ω. What is IL?

Accepted Answer

A)  1.71 A 
B)  2.4 A 
C)  3 A 
D)  4 A 
A)  1.71 A 
B)  2.4 A 
C)  3 A 
D)  4 A

Question 12

In a parallel circuit, ET = 208 V, R = 39 kΩ, and XL = 24 kΩ. What is the power factor?

Accepted Answer

A)  31.61% 
B)  52.4% 
C)  85% 
D)  95% 
A)  31.61% 
B)  52.4% 
C)  85% 
D)  95%

Question 13

In a parallel circuit, ET = 240 V, R = 30 Ω, and XL = 40 Ω. What is the power factor?

Accepted Answer

A)  33% 
B)  75% 
C)  80% 
D)  90% 
A)  33% 
B)  75% 
C)  80% 
D)  90%

Question 14

In a parallel circuit, ET = 277 V, R = 33 kΩ, and XL = 42 kΩ. What is Z?

Accepted Answer

A)  13.41 kΩ 
B)  22.48 kΩ 
C)  25.95 kΩ 
D)  38.48 kΩ 
A)  13.41 kΩ 
B)  22.48 kΩ 
C)  25.95 kΩ 
D)  38.48 kΩ

Question 15

In a parallel circuit, ET = 277 V, R = 56 kΩ, and XL = 68 kΩ. What is the phase angle (angle theta)?

Accepted Answer

A)  34.56° 
B)  39.47° 
C)  50.53° 
D)  90° 
A)  34.56° 
B)  39.47° 
C)  50.53° 
D)  90°

Question 16

In a parallel circuit, ET = 120 V, R = 30 Ω, and XL = 60 Ω. What is the phase angle (angle theta)?

Accepted Answer

A)  13.49° 
B)  26.51° 
A)  13.49° 
B)  26.51°

Question 17

In a parallel circuit, ET = 240 V, R = 5.6 kΩ, and XL = 3.6 kΩ. What is P?

Accepted Answer

A)  6.26 W 
B)  8.65 W 
C)  9 W 
D)  10.28 W 
A)  6.26 W 
B)  8.65 W 
C)  9 W 
D)  10.28 W

Question 18

In a parallel circuit, ET = 120 V, R = 8.2 kΩ, and XL = 10 kΩ. What is IL?

Accepted Answer

A)  6.59 mA 
B)  9.28 mA 
C)  12 mA 
D)  14.63 mA 
A)  6.59 mA 
B)  9.28 mA 
C)  12 mA 
D)  14.63 mA

Question 19

In a parallel circuit, ET = 240 V, R = 27 kΩ, and XL = 47 kΩ. What is IT?

Accepted Answer

A)  3.24 mA 
B)  10.25 mA 
C)  18.89 mA 
D)  50.11 mA 
A)  3.24 mA 
B)  10.25 mA 
C)  18.89 mA 
D)  50.11 mA

Question 20

In a parallel circuit, ET = 120 V, R = 3.3 kΩ, and XL = 4 kΩ. What is IR?

Accepted Answer

A)  16.44 mA 
B)  23.14 mA 
C)  30 mA 
D)  36.36 mA 
A)  16.44 mA 
B)  23.14 mA 
C)  30 mA 
D)  36.36 mA

Exam 19: Resistive-Inductive Parallel Circuits

In a parallel circuit, ET = 240 V, R = 47 kΩ, and XL = 50 kΩ. What is the reactive power?

In a parallel circuit, the current flow through the inductor will be .

In a parallel circuit, ET = 240 V, R = 30 Ω, and XL = 40 Ω. What is IT?

In a parallel circuit, ET = 240 V, R = 400 Ω, and XL = 300 Ω. What is P?

In a parallel circuit, the voltage across the resistor and the voltage across the inductor are .

In a parallel circuit, the supply voltage is 120 V, 60 Hz. The resistance is 30 Ω and the inductive reactance is 40 Ω. What is the value of the inductor?

In a parallel circuit, ET = 240 V, R = 330 Ω, and XL = 420 Ω. What is Z?

In a parallel circuit, ET = 208 V, R = 33 kΩ, and XL = 82 kΩ. What is the apparent power?

In a parallel circuit, ET = 120 V, R = 470 Ω, and XL = 500 Ω. What is the reactive power?

In a parallel circuit, ET = 120 V, R = 1500 Ω, and XL = 1000 Ω. What is the apparent power?

In a parallel circuit, ET = 120 V, R = 30 Ω, and XL = 40 Ω. What is IL?

In a parallel circuit, ET = 208 V, R = 39 kΩ, and XL = 24 kΩ. What is the power factor?

In a parallel circuit, ET = 240 V, R = 30 Ω, and XL = 40 Ω. What is the power factor?

In a parallel circuit, ET = 277 V, R = 33 kΩ, and XL = 42 kΩ. What is Z?

In a parallel circuit, ET = 277 V, R = 56 kΩ, and XL = 68 kΩ. What is the phase angle (angle theta)?

In a parallel circuit, ET = 120 V, R = 30 Ω, and XL = 60 Ω. What is the phase angle (angle theta)?

In a parallel circuit, ET = 240 V, R = 5.6 kΩ, and XL = 3.6 kΩ. What is P?

In a parallel circuit, ET = 120 V, R = 8.2 kΩ, and XL = 10 kΩ. What is IL?

In a parallel circuit, ET = 240 V, R = 27 kΩ, and XL = 47 kΩ. What is IT?

In a parallel circuit, ET = 120 V, R = 3.3 kΩ, and XL = 4 kΩ. What is IR?

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