what is rotatng magnetic field in case of three or multiple
phase alternating current machines???
Answer / rajesh
when a 3 phase supply is passed into stator . the plot of
voltage vs time will give rise to resultant voltage .
this is then converted to magnetic field due to faradays law
. when u plot again u will get the resultant current . The
rotating magnetic field ( also magnetizing magnetic field )
has voltage current char similar to 3 phase supply . the rmf
is hypothetical concept to link field between stator and rotor
Is This Answer Correct ? | 1 Yes | 0 No |
Why Neutral Isolation is required?
WHAT IS THE MEANING CREEPAGE DISTANCE
What is an iron loss or core loss pi?
Wat wil happen if Transformer is operated at 100 HZ Frequency?
Explain why the Voltage drop will happen in 3 Phase line?
in a three pin socket y the pin of earthng is longer n bigger...?
There are two nos of 33Kv/11Kv 5MVA transformers conecting through HT cable from substation having metering at substation itself.One transformer used at a time another remains stand by.Further 11 nos of 11Kv/440V transformers are attached on it and each transformer is having its own Power factor correction panel.Now one 33/11Kv transformer at no load condition/Stand by condition is having power factor in leading side upto 0.21 and while when another tranformer at same situation have power factor in lagging 0.42. Now one thing is clear that transformer one is having 1.5 Km long 33kv cable due to that PF goes in leading side and another is having only 250 mtr length remains him lagging. Now i want to know that how i can maintain the Power factor at no load/ stand by position though both are behaving in seperate manner.
describe the A.C. Generator Testing procedure
How does a VOLTAGE OPERATED DIFFERENTIAL RELAY work??
How to do cable sizing calculation for 750 A Neutral Earthing resistor for 33kv. the 33kv cable going to swbd. is 630mm2 3 runs.
explain with diagram how to protect transformers and substations from over current with help of CT's?
In a three-phase full converter, output voltage pulsates at frequency of a. f b. 2f c. 3f d. 6f