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Power in AC Circuit

0 votes

asked Dec 12, 2015 in ELECTRICAL ENGINEERING by anonymous

2 Answers

0 votes

(a)

Step 1:

Find the total impedance.

is in parallel to .

is in series with and .

Step 2:

Find the power reading in wattmeter 1.

Input voltage is

It is in the form of .

Here .

Wattmeter reading is the real part of the power.

image

Solution:

Power in wattmeter 1 is image

answered Dec 12, 2015 by Lucy Mentor
0 votes

(b)

Step 1:

From (a):

Find the total current in the ciruit.

image

image

image

Step 2:

In a series network, current is same through each element.

Find the voltage drop across .

image

image

image

It is in the form of .

Here image.

Find the power reading in wattmeter 2.

image

image

image

Solution:

Power in wattmeter 2 is image

answered Dec 12, 2015 by Lucy Mentor

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