homework help > electrical engineering > electrical engineering q&a board > topic: circuits >phasors : j?...

Q BgQuestion:

      
Novice
Karma Points: 25
Respect (57%):
posted by  OE Kid on 4/22/2008 3:51:00 PM  |  status: Live  |  Earned Karma: 25

Circuits >Phasors : j?

Course Textbook Chapter Problem Needs by
Analog Circuits Basic Engineering Circuit Analysis (8th) by Irwin 8 8P N/A
Question Details:
How do I convert 3+j4 into phaser  form?

The answer is  553.130o
Bonus Point Alert! Earn +4 additional karma points for helping this gold member.

cRequests for Clarification:

Rookie
Karma Points: 1
posted by Anonymous on 6/26/2009 10:20:32 AM  |  status: Live
Clarification Details:
1.Find the value of parallel capacitance needed to correct a load of 140KVAR at
0.85 lagging power factor to unity power factor.Assume that the load is supplied by a
110Vrms 60 Hz line.

AAnswers:

Answer Question Ask for clarification
Sage
Karma Points: 3,458
posted by ahtinus on 4/22/2008 4:13:00 PM  |  status: Live
Asker's Rating: Somewhat Helpful   
Response Details:

you can directly use this .....

x + jy
y = R sin t and x = R cos t

R2 = x2 + y2 and tan t = y/x


Apprentice
Karma Points: 102
posted by A.Anbtawi on 6/28/2009 1:52:34 PM  |  status: Live
Asker's Rating: This answer has not been rated. If you asked this question, then please login.   
Response Details:
In order to perform this operation you must remember Euler's Formula which is:
                                                                           
so  applying you values to the right side of the equation will give you
                                                                                    =3+j 4
so this mean that cos(θ)=3 and sin(θ)=4  solving this will give us that tan(θ)=53.13
also the absolute value will equal =5
so the answer will be 5<53.13
Answer Question Ask for clarificarion
Ask New Question

Join Cramster's Community

Cramster.com brings together students, educators and subject enthusiasts in an online study community. With around-the-clock expert help and a community of over 100,000 knowledgeable members, you can find the help you need, whenever you need it. Join for free today » How Cramster is different from tutoring »

Need Help In

Useful Links