homework help > electrical engineering > electrical engineering q&a board > topic: peak value...

Q BgQuestion:

      
Pupil
Karma Points: 50
Respect (38%):
posted by  Johon1973 on 7/4/2009 12:16:19 AM  |  status: Live  |  Earned Karma: 50

peak value

Course Textbook Chapter Problem Needs by
N/A N/A N/A N/A N/A
Question Details:
 A) A pure DC current of 20 A flows through a given resistor producing certain amount of heat. What peak value of AC current is required to produce the same amount of heat?

 B) What rms, or effected value, of AC current is required to produce the same amount heat?
Bonus Point Alert! Earn +15 additional karma points for helping this gold member.

AAnswers:

Answer Question Ask for clarification
Oracle
Karma Points: 25,678
posted by Shree_vani(MNK) on 7/4/2009 1:04:32 AM  |  status: Live
Asker's Rating: None Provided    Moderator's Rating: Helpful
Response Details:
IDC = 20A
The DC value in an AC signal is the average value and is given by
To produce the same heat as that produced by the DC current
Iav = IDC
Then the peak value is given by
B) The rms or effective value is given by
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