Dismiss Notice
Join Physics Forums Today!
The friendliest, high quality science and math community on the planet! Everyone who loves science is here!

Seperately excited DC machine question

  1. Apr 20, 2006 #1
    Hi, i would be very grateful for some help.......

    I have recently conducted an experiment and but im not sure how to compare the values i measured with 'predicted' results (from theoretical equations). This is for the 'open circuit characteristic of a dc generator'.

    I set values for the field current and recorded values of the armature voltage. Then plotted a graph of armature voltage against field current. The only other value i have to work with is that the machine was running at 1500rev/min.......

    e.g. a measured value was - setting the field current to 0.1A i recorded 70.5Volts. All i want to know is how do i check this is about right????

    Thanks very much,

  2. jcsd
Share this great discussion with others via Reddit, Google+, Twitter, or Facebook

Can you offer guidance or do you also need help?