Answers were Sorted based on User's Feedback
Answer / vinodh.t,sathavahana ispat ltd
1.constant power :in single phase power varies sinosoidally
from zero to a peak value at twice the supply
frequency.this pulsating nature of power is objectionable
for many application in 3 phase the poiwer supplied at all
instants of time is constant
2.the output of a 3phase machine is greater than that of a
single phase machine for a given volume and weight of
3.the 3 phase motor are much smaller and cheap than single
|Is This Answer Correct ?||18 Yes||1 No|
Answer / mahantesh
Three phase carry large current than a single phase current,for larger loads the cross section of conductor is larger in single phase than three phase and single phase cannot be transmitted to larger distance than the three phase,line losses are small as compared to single phase so we prefer three phase instead of single phase
|Is This Answer Correct ?||15 Yes||5 No|
Answer / manish singla
i agree with Reply by Mr. Vinodh.t,sathavahana Ispat Ltd.
|Is This Answer Correct ?||1 Yes||0 No|
Answer / prasad.v
because in one phase if there is any shortage or short
circuit may happen apart from this if we use one phase
current there may be more possible to low voltage we can see
that some house light will be more dim so if we three phase
if any of the has low voltage we can change the phase so we
are preferring 3 phase than 1 phase
|Is This Answer Correct ?||6 Yes||21 No|
how can i select the cable ratings
what happens when parallel resonance occurs?
WILL THE PERCENTAGE IMPEDENCE FOR A ONAN TRANSFORMEER BE THE SAME COMPARED TO ONAF TRANSFORMER OF SAME RATING???
what is overflexing in transformer? setting?
If we connect capacitor in series DC supply so what happened?
How to calculate the 2500 Kva Transformer losses Primary 11KV Secondary 415volts
What is different type of Electrical curve and how it protects the equipment's while up-normal situation?
WHY EARTHING NOT NEEDED IN BATTERY IN SUBSTATION
what is earthed and inearthed cable or system?
What is the secondry voltage of 420kV Current Transformer , the rated current is 2600A
Calculate the demand in KVA for a three phase 440V power source drawing 1100A current
Why is transformer connect parallel? why not series? ....plz...