Answer Posted / rajesh
This case arises only in series dc generator
current should be sent around the poles to magnetize.
this current can the source(generator).
current is passed through poles if it is loaded.
but if it is not loaded current is zero through the field.
load voltage should be zero actually.but this dont
happen.we us egenerator frequently.due to this poles are
partially magnetized this causes some voltage appear called
residual voltage.
i haven't heard about residual current
| Is This Answer Correct ? | 11 Yes | 28 No |
Post New Answer View All Answers
How to calculate Grid rotor resistance(GRR) losses in slip ring induction motor?
in battery charging room we find two fuses (one in positive other in negative cables ).why it is so?one fuse is ore than sufficient?
While testing LA mast,What are the parameter limits ?
why we get 2 differnet values for power factor in 2 watt meter method in 3 phase
how we control automatic generator i'e with to supply (main supply and local generator) when the main supply was break to supply the local supply automatically to begin supplying power.I now this control circuit is the combination of contactor time delay contactor switch and overload relay .but my question is how we combine those component thank you
do we use links in a dc circuit?if so what s its use in it?
How much pf maintan in dg set in 6o% load,when Dg runnig Neutaal Earthing removed what happen.
When we connect the large capacitor bank in series ?
what are the different methods for the starting of a synchronous motor.
What is online and offline ups? how does it works?
can mini-curcuit supply MIL-tested transformer !
PLEASE INFORM ABOUT THE IDEAL TEST RESULTS OF MAGNETIC BALANCE TEST OF TRANSFORMER 33/11 kv DELTA-STAR T/F
How to select a cable size for particular load?
how can tell us the AC indoor or outdoor which Tr and formulls