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Voltage and power

0 votes

asked Aug 22, 2015 in ELECTRICAL ENGINEERING by anonymous

4 Answers

0 votes

(1)

Step 1:

Circuit current is image.

Find the current image using waveform given.

Observe the graph:

Two points in the interval image are (0, 0) and (0.5, 2).

Two points in the interval image are (0.5, 2) and (1, 0).

Find the current image in image.

Slope = image

Point-Slope form of the equation is .

Slope = 4 and the point is (0, 0).

image

Current in image is image.

Step 2:

Similarlly for image.

Slope = image.

Slope = -4 and the point is (1, 0).

image

Current in image is image.

Voltage across the resistor is image.

Resistance R = 2 ohms.

Voltage across the resistor in image :

image

Voltage across the resistor in image :

image

Therefore the voltage across the resistor is image.

Solution :

The voltage across the resistor is image.

answered Aug 22, 2015 by Lucy Mentor
edited Aug 22, 2015 by Lucy
Inductor voltage
Voltage in circuit
Power in a circuit
0 votes

(2)

From (1),

Current in is .

Current in  is .

Observe the circuit, H.

Find voltage across the inductor in image.

.

Find voltage across the inductor in .

.

Voltage across the inductor is image.

answered Aug 24, 2015 by cameron Mentor
edited Aug 24, 2015 by cameron
0 votes

(3)

Voltage in the circuit is image.

From the results of (1) and (2):

.

.

Find the total voltage of the circuit in .

image.

Find the total voltage of the circuit in .

image

image.

Total voltage of the circuit is image.

answered Aug 24, 2015 by cameron Mentor
0 votes

(4)

From the results of (1) and (3):

Circuit current in is .

Circuit current in is .

.

Power dissipated in the circuit is P =V i .

Find the power dissipated in the circuit in .

.

Find the power dissipated in the circuit in .

image

image

Power dessipated in the circuit is .

answered Aug 24, 2015 by cameron Mentor
edited Aug 24, 2015 by cameron

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