Why generator field rheostat is set to maximum position and
motor field rheostat is set to minimum?
Answer Posted / ranganath bhagavathi
At initial condition,we have high armature current,so in order to reduce that we use 3-point starter.
Then after we to kept a constant speed.so if current decreases obviously speed increses.so thats y we decrese the flux/arm current speed increses..
Is This Answer Correct ? | 17 Yes | 33 No |
Post New Answer View All Answers
whatis the commertial spec. of distribution boards ?
What do you mean by turns ratio of instrument transformer?
my bachelors was done with EEE now i got admit in NU with CS as course. how to answer this qns 1) why u choose cs? 2) why u changed from eee to cs
Explain advantages of storage batteries
what is the principle of operation of CFL ??
how to estimate wiring ins roughing ins. and boxes
how can i apilly for electrical c licencese.sir,i completed B.Tech in electrical & electronics engineering in 201onot working any company
Hi.. I am a BE GRaduate in E&E. I have 8.5 Experience in Tendering & Estimation field. I have done SAP SD course few years back. But due to some reason i failed to get job in that field and continued my own field. Now I am thinking of changing into SAP seriously. How should i go ahead???
what is mean by dual digital protection in the relay field?
Why using synchronising methed in DG's sets?
sir please send me iocl written test paper in my e-mail account. i'll be obliged to you........ thank u roshan
What is the formulae of Megger value for a A.C.Motor
7- What is the Dissipation Factor and the difference between it and Insulation Resistance Test? 8- What is the task (function) of DC and AC reactors in power plant? 9- What is the task (function) of (open delta with earthed) in some types in transformers? 10- What is the base of the selection of the vector group in transformers? 11- What is the zig-zag transformer and its function by drawing in large detail? 12- What is the polarity ? 13- Why we make short between phase(R) in high side and phase (r) in low side in vector group test? Where High Side ( R ,S and T ) and Low Side ( r ,s and t ). 14- What are the time on delay and time off delay? 15- What is the vector group? 15- What is the task (function) of different types of vector group such as Dyn11 , Dd0 , YNd1,……..,?
what is the relationship between phase & neutral
How the frame size of a flange mounted AC induction motor is calculated?