what is effect of unbalaced load -- say R 15A, Y 25A, B 10A
Answers were Sorted based on User's Feedback
Answer / debasis
Resulting neutral current. Generally lighting system has
this type of unbalance. If neutral is not provided then
star point will be shift from its ideal place caused
overvoltage in one or two phase(s).
| Is This Answer Correct ? | 15 Yes | 2 No |
Answer / vinod kumar t
unbalanced load wil cause to flow of negative sequence
current which will heats up the alternator and hence it
effects insulation failure
| Is This Answer Correct ? | 13 Yes | 2 No |
Answer / ravi teja.a
Resulting flow of neutral current. Generally lighting
system has this type of unbalance. If neutral is not
provided then star point will be shift from its ideal place
to new place with the phase angle related to phase(which
has the higher current value in mentioned phases)caused
over voltage in one or two phase(s).-------is the correct
answer.
| Is This Answer Correct ? | 6 Yes | 0 No |
Answer / ramesh.r.t
If the supply voltage must 440vac 50Hz in star or delta
connection of motor or alternator stator pitch factor either
phase angel are changed.
| Is This Answer Correct ? | 2 Yes | 0 No |
how will be power factor while using the resistive load and Capacitive load?
battery spicgravity mesuserd?
How u can give the overload setting to any motor protection relay for a HT motors with formula and Example?
define power quality
Can a 50-Hz designed transformer be used at 60-Hz system? Is the same remains true, when a 60-Hz designed transformer be used at 50-Hz system? Consider only frequency variation. The voltage remains as rated value in all cases. Justify the answer.
Can I use distributon class/transmission class Lightning arresots for protecting the building? If not why please explain?
why rating in KVA and KVAR?
how hazordious area is classified at an oil & gas plant and categorise suitable class of electric equipment in that area like induction motors, LCS, Lighting Fixtures Fluerescent/Flood lights Mercury& sodium lights, J.Bs, Power Cables etc
Why are cables rated for 40 KA for 0.25 Sec fault current rating?
How to calculate capacitor bank value to maintain unity power factor with some suitable example?
how much loading in terms of ampere can put on 5 MVA,33/11 KV TRANSFORMER having rated current 263 Amp ?????????
HOW TO CALCULATE ELECTRICAL, MECHANICAL,& OVERALL EFICIENCY OF GAS ENGINE POWER PLANT
Civil Engineering (5086)
Mechanical Engineering (4456)
Electrical Engineering (16639)
Electronics Communications (3918)
Chemical Engineering (1095)
Aeronautical Engineering (239)
Bio Engineering (96)
Metallurgy (361)
Industrial Engineering (259)
Instrumentation (3014)
Automobile Engineering (332)
Mechatronics Engineering (97)
Marine Engineering (124)
Power Plant Engineering (172)
Textile Engineering (575)
Production Engineering (25)
Satellite Systems Engineering (106)
Engineering AllOther (1379)