Welcome :: Homework Help and Answers :: Mathskey.com

Recent Visits

    
Welcome to Mathskey.com Question & Answers Community. Ask any math/science homework question and receive answers from other members of the community.

13,435 questions

17,804 answers

1,438 comments

774,953 users

HELP10

0 votes

asked Jul 6, 2015 in ELECTRICAL ENGINEERING by anonymous
recategorized Jul 8, 2015 by bradely

3 Answers

0 votes

(2.1)

Step 1:

The total circuit current is .

Circuit voltage is .

Frequency of the circuit is 50 Hz.

Find the total circuit impedance .

Impedance of the circuit is .

Step 2:

Find the equivalent branch impedance of branch B.

Resistor R2 and capacitor C are in series.

Impedance offered by capacitor is .

The equivalent branch impedance of branch B :

.

.

Step 3:

Find the branch current IA.

Use the current division rule : image.

image

Therefore the branch current IA = 3.0468 A.

Solution :

The branch current IA = 3.0468 A.

answered Jul 9, 2015 by yamin_math Mentor
0 votes

(2.2)

Step 1:

The total circuit current is .

Circuit voltage is .

Frequency of the circuit is 50 Hz.

Find the total circuit impedance .

Impedance of the circuit is .

Step 2:

Find the equivalent branch impedance of branch B.

Resistor R2 and capacitor C are in series.

Impedance offered by capacitor is .

The equivalent branch impedance of branch B :

.

.

Step 3:

Find the equivalent branch impedance of branch A.

Branch A and branch B are in parallel.

Total Impedance of the circuit is .

Therefore the branch impedance of branch A is .

Solution :

Branch impedance of branch A is .

answered Jul 9, 2015 by yamin_math Mentor
0 votes

Question (1)

Step 1:

Find the current through 12 resistor.

Super Position Theorem :

Take one voltage source at a time and replace all other with short or internal resistance.

image

Apply Kirchoff law for the loop 1.

image

Apply Kirchoff law for the loop 2.

image

Apply Kirchoff law for the loop 3.

image

Solve equations (1), (2) and (3).

image, image and image.

Current across resistor 12 is image.

image

Current across resistor 12 is image A.

answered Jul 10, 2015 by Lucy Mentor
edited Jul 10, 2015 by Lucy

Contd...

Step 2:

Take one voltage source at a time and replace all other with short or internal resistance.

image

Apply Kirchoff law for the loop 1.

image

Apply Kirchoff law for the loop 2.

image

Apply Kirchoff law for the loop 3.

image

Solve equations (1)(2) and (3).

image, image and image.

Current across resistor 12 is image.

image

Current across resistor 12 is image A. (Negative sign indicates opposite direction)

Step 3:

Current through Load resistor 12 =

= Current produced by 12 resistor due to 5 V + Current produced by 12 resistor due to 10V

= 0.4658-0.233

 = 0.2328

Current through 12 resistor is 0.2328 A.

Solution :

Current through 12 resistor is 0.2328 A.

No related questions found

...