Answer Posted / pallavi
The effect of magnetic field set up by armature current on
the distributon of flux under main poles of a generator.
The armature magnetic field has two effects (i) it
demagnetises or weakens the main flux and (ii)it cross-
magnetises or distors it. The first effect leads to
reduced generated voltage and the second to the sparking at
the brushes.
| Is This Answer Correct ? | 4 Yes | 3 No |
Post New Answer View All Answers
Explain the different methods used in the choice of rotor slots for reduction of harmonic torques in an induction motor.
Why a tesa lamp is glow between two phase?
What are the various types of rotor used in the alternators?
The gauge indicates the number of amps, but what about voltage? How voltage rating (for wire or fuse) determined?
How many VSC based HVDC are there in India and the world
please forward me the type of questions which would rise while me attending to 33KV Electrical License to my mail ID:vadrevu_raghava@yahoo.co.in
In hydel power plants, L.A's, S.C's are placed inside the control panel boards. what is the purpose? [already the total body was earthed to ground.]
what is submersible pump?what is different between motor and sub motor?
what are the available sizes of pin type terminal lugs in the market today?
I NEED RRB APTITUDE QUESTIONS AND MODEL PAPER,PLEASE SEND MY E-MAIL joo28_eee@yahoo.co.in
I need a formula to calculate the size of cable as per load but in the terms of length. Please Reply me as i search lot of sites but i did not get the answer.
What are the various kind of cables used for transmission?
what is the difference between earthing and unearth
What are the disadvantages of autotransformer?
I am going to appear for the RRB Chennai Section Engineer online exam. Please send me the question papers from 2001 to date to my mail id:upendrakrishna20@gmail.com,plz send me ,or send any other rrb papers plzzzzzzzzzzzzzzzzzz