×
Follow Us
Results 1 to 3 of 3

Phasor subtraction question

    #1
  1. jfoster is offline Junior Member Pro Subscriber
    Join Date
    Mar 2015
    Posts
    11
    Reputation

    Phasor subtraction question

    I had a question very similar to this.

    If a phasor B = 6 – j2 is subtracted from phasor A = -4 + j3, what is the resulting phasor C?

    Any idea how to solve for it?

    Thanks,
    John

  2. #2
  3. dash1911 is offline Junior Member Pro Subscriber
    Join Date
    Sep 2019
    Posts
    1
    Reputation
    Quote Originally Posted by jfoster View Post
    I had a question very similar to this.

    If a phasor B = 6 – j2 is subtracted from phasor A = -4 + j3, what is the resulting phasor C?

    Any idea how to solve for it?

    Thanks,
    John
    John,

    This is one of those questions that seems more complicated than it really is. This form of phasor is Z=R+jX where R is the real part of the phasor, and X is the imaginary part of the phasor. When adding/subtracting in this form, it is as easy as adding/subtracting each part of the phasor individually. Given phasor Z1 and phasor Z2, Z1-Z2=(R1-R2) + j(X1-X2) So, C = A - B = [(-4)-6] +j[3-(-2)] = -10 + j5. This only works for addition and subtraction. I hope this helps!

    Dana

  4. #3
  5. jfoster is offline Junior Member Pro Subscriber
    Join Date
    Mar 2015
    Posts
    11
    Reputation
    Quote Originally Posted by dash1911 View Post
    John,

    This is one of those questions that seems more complicated than it really is. This form of phasor is Z=R+jX where R is the real part of the phasor, and X is the imaginary part of the phasor. When adding/subtracting in this form, it is as easy as adding/subtracting each part of the phasor individually. Given phasor Z1 and phasor Z2, Z1-Z2=(R1-R2) + j(X1-X2) So, C = A - B = [(-4)-6] +j[3-(-2)] = -10 + j5. This only works for addition and subtraction. I hope this helps!

    Dana
    Thank you

Subscribe

Share this thread

Related Topics

  1. Transformer ester oil vs mineral differences?
    By JamesM in forum Electrical Testing Talk
    Replies: 4
    Last Post: January 28, 2020, 04:31 PM

Tags for this Thread

Follow us


Explore TestGuy


NETA Certification Training


NICET Electrical Power Testing


Help and Support




You are viewing the archives. Enjoy new features and join the conversation at wiki.testguy.net