Why DC excitation is used for alternators? Why cant it be AC?
- 35 Answers
- 69692 Views
- ABB, Ace Info, Alstom, Shalivahana Power, I also Faced
- E-Mail Answers
Answer Posted / tapan desai
Because due to ac supply the
torque produce in rotor is in
pulsating nature so filed is
produce also in pulsating
nature so that neglect each
other so for provide constant
torque and field we give dc
supply or dc excitation to
rotor with help of slip ring.
| Is This Answer Correct ? | 5 Yes | 0 No |
Post New Answer View All Answers
which one is more efficient, torq, power & ecnomy with the same frame size AC motor / DC motor?
how to setting voltage RTCC panel
Dear sirs, pls check this 4-20ma to RS485 module datasheet,pls guve me some suggestions. http://www.szsunyuan.com/sy/pro_more.asp?Productid=539 Thanks. E-mail:yunianjiang99@gmail.com
when the Transmission and Distribution network where is the "feeder" lines are located? and why should be used in T&D network.....
i need to now what will be the cable size to the following load, transformer to distribution panel distance 110m, load 1000kw, voltage 400v, pf 0.85, permissible voltage drop 2.0%, overhead line, atmospheric temperature 35 degree c.
2. A current i=(10+10 sin t)amperes is passed through MI type ammeter. its reading will be.........
WHat is the requirement of installing FAST ACTING EARTH SWITCH in GIS and how is that integrated with protection system. How and when does it operate?
What is meant by earthhing of a magnetic flow meter and when to use empty pipe detection?
How to assume answer to electrical questions
(1)Can earth and be conected together (2) what is the diferent between earth & neutral
what is servo motor and how it works?
what will happen if ac and dc supplies given
I HAVE A 50A MCCB AS PER DESIGN LINE WIRE CONNECT UPWORD SIDE AND LOAD IS CONNECTED TO DOWNWARD SIDE TO THE MCCB.IF NOW ANY ONE CHANGE SUPPLY & LOAD(WISEVERSA) WHAT HAPPENS ? DOES MCCB OPERATION OR WORKING FUNCTION NORMAL IF YES THAN WHY THERE ARE MARKED LINE & LOAD ON MCCB.
What is the power factor of an alternator at no load?
How many types of electric motors are there?
