DELMAR'S STANDARD TEXT OF ELECTRICITY
6th Edition
ISBN: 9780357323380
Author: Herman
Publisher: CENGAGE C
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Chapter 25, Problem 1PP
Find all the missing values in the following problems.
The circuit in Figure 25-2 is connected to a 120-V, 60-Hz line. The resistor has a resistance of 36 Ω, the inductor has an inductive reactance of 40 Ω, and the capacitor has a capacitive reactance of 50 Ω.
| ET 120V ________ | ER ________ | EL ________ | EC ________ |
| IT ________ | IR ________ | IL ________ | lC ________ |
| Z ________ | R 36 Ω ________ | XL 40Ω ________ | XC 50Ω ________ |
| VA ________ | P ________ | VARsL ________ | VARsC ________ |
| PF ________ | ∠θ ________ | L ________ | C ________ |
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-E1 + VR1 + VR4 – E2 + VR3 = 0 -------> Loop 1 (a)
R1(I1) + R4(I1 – I2) + R3(I1) = E1 + E2 ------> Loop 1 (b)
R1(I1) + R4(I1) - R4(I2) + R3(I1) = E1 + E2 ------> Loop 1 (c)
(R1 + R3 + R4) (I1) - R4(I2) = E1 + E2 ------> Loop 1 (d)
Now that we have loop 1 equation will procced on finding the equation of I2 current loop. However, a reminder that because we are going in a clockwise direction, it goes against the direction of the current. As such we will get an equation for the matrix that will be:
E2 – VR4 – VR2 + E3 = 0 ------> Loop 2 (a)
-R4(I2 – I1) -R2(I2) = -E2 – E3 ------> Loop 2 (b)
-R4(I2) + R4(I1) - R2(I2) = -E2 – E3 -----> Loop 2 (c)
R4(I1) – (R4 + R2)(I2) = -E2 – E3 -----> Loop 2 (d)
These two equations will be implemented to the matrix formula I = inv(A) * b
R11 R12
(R1 + R3 + R4)
-R4
-R4
R4 + R2
Chapter 25 Solutions
DELMAR'S STANDARD TEXT OF ELECTRICITY
Ch. 25 - An AC circuit contains a 24 resistor, a 15.9-mH...Ch. 25 - An RLC parallel circuit contains a resistor with a...Ch. 25 - The circuit shown in Figure 25-2 has a current of...Ch. 25 - A tank circuit contains a capacitor and an...Ch. 25 - A 0.796-mH inductor produces an inductive...Ch. 25 - An AC motor is connected to a 560-V, 60-Hz line....Ch. 25 - A single-phase AC motor is connected to a 240-V,...Ch. 25 - Find all the missing values in the following...Ch. 25 - Find all the missing values in the following...Ch. 25 - Prob. 3PP
Ch. 25 - Find all the missing values in the following...Ch. 25 - In an RLC parallel circuit, the resistor has...Ch. 25 - In an RLC parallel circuit, the resistor has a...Ch. 25 - In an RLC parallel circuit, the true power is 260...Ch. 25 - An RLC parallel circuit has an apparent power of...Ch. 25 - In an RLC parallel circuit, the resistor has a...Ch. 25 - An RLC parallel circuit is connected to 240 volts....
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