Rules and Guidelines
Want to participate in the discussions? Please read our Community Rules and Guidelines. Need some help? Visit Support and Answers.

  • State Not Answered
  • Locked Locked
  • Replies 26 replies
  • Subscribers 16 subscribers
  • Views 2820 views
  • Users 0 members are here
Options
You may also be interested in
This discussion has been locked.
You can no longer post new replies to this discussion. If you have a question you can start a new discussion

Answers Please. Electrical Technology.

Zoomup
1. A load of 2.5kW takes a current of 12 Amp from a 230 Volt supply. Calculate the power factor.


2. Three single phase loads are to be connected to a three phase supply. All at unity power factor. The loads are,


i, 60 Amp.


ii, 50 Amp.


iii, 40 Amp.


By any method determine the neutral current.


Z.
Parents
  • 0
    Well  City & Guilds and the I.E.T. joint publication have not produced an accurate answer then.  I don't know what method they have used but  a 'proper' calculation produces the result that I, and others,  gave (Mike's answer would have been the same but for a simple arithmetic error).


    A decent phasor diagram would also come close to the correct answer.

    BTW I got my angle wrong in my earlier post?

    Regards

    Geoff Blackwell

Reply
  • 0
    Well  City & Guilds and the I.E.T. joint publication have not produced an accurate answer then.  I don't know what method they have used but  a 'proper' calculation produces the result that I, and others,  gave (Mike's answer would have been the same but for a simple arithmetic error).


    A decent phasor diagram would also come close to the correct answer.

    BTW I got my angle wrong in my earlier post?

    Regards

    Geoff Blackwell

Children
No Data

Community Rules & Guidelines