• Support PF! Buy your school textbooks, materials and every day products Here!

DC generator - reference book

  • #1
I have completed a DC generator chapter from my course book. Below mentioned questions have been asked in previous examinations, but my course book doesn't help in solving these. Please help me with the reference books which will be helpful in solving these type of questions.

I am pursuing Aeronautical Engineering through correspondence, hence I lack guidance. It's like self study.

1. Find the ampere-turns per pole of field excitation required for the single gap of a 2-pole DC generator with the following particulars : 200 V on no load at 2000 rpm, armature length 32 cm, effective gap length 0.8 cm, pole arc 30 cm and 200 armature conductor.

2. A 10 kW, 1440 rpm desperately excited generator has resistance loss of 400 W in the field winding under normal operating conditions. The time constant of the field winding is 0.2 secs. Calculated the energy stored in the magnetic field produced by the field winding.

3. Find the number of poles for a 1200 kW separately excited DC generator if the average voltage between commutator segments is 15 V and the armature ampere turns per pole on full load is 10000. The generator has single turn coil and is lap connected. Ignore all losses.
 
Last edited:

Answers and Replies

  • #2
798
1
Electric Machinery fundamentals by Chapman should suffice for problems like these. I am currently using this textbook for ac machines, but previously I had used it for dc machines.
 
  • #3
Thanks, will go through the book.
 

Related Threads on DC generator - reference book

  • Last Post
Replies
6
Views
2K
  • Last Post
Replies
1
Views
608
  • Last Post
Replies
0
Views
3K
  • Last Post
Replies
7
Views
3K
Replies
1
Views
1K
Replies
1
Views
579
  • Last Post
Replies
3
Views
1K
  • Last Post
Replies
9
Views
1K
Replies
8
Views
2K
  • Last Post
Replies
8
Views
1K
Top