What is the power ratio between power in Star and Delta
circuit?
Answer Posted / karl
If placing 3 resistors in Delta rather than Star will end
up with 3 times more heating power. This is because you
have sq root of 3 times more voltage across each resistor
in Delta and hence end up with the sq root of 3 times more
current through each resistor. The sq root of 3 of more
voltage times the sq root of 3 of more current than, star
connected resistors means 3 times more power. Capacitor
are often connected in Delta for power factor correction as
this offers 3 times more reactive power than in Star
connection, though be aware they need to be able to cope
with line voltage across each Cap in Delta.
Is This Answer Correct ? | 10 Yes | 4 No |
Post New Answer View All Answers
Why frequency changes due to load variation in power system ? i.e why when load increases frequency decreases?
Can any body tell me the different types of LT cables & their application.
Differentiate between real and apparent power?
How to calculate total harmonic distortion level(THD) in VFD? and how can we reduce harmonics?
There are Two questions about Steam Turbine Generator... What is HRSG bypass of LP, HP used for in power generation? In particualar, in the event that fault of HP bypass, there would be STG TRIP in operation but none on the LP bypass fault...what's the reason ?
why all the feeders are designed in a particular manner ... is there any reason for that???
PLEASE INFORM ABOUT THE IDEAL TEST RESULTS OF MAGNETIC BALANCE TEST OF TRANSFORMER 33/11 kv DELTA-STAR T/F
when 20hp 3 phase motor start no load condition in star or delta connection.find current and write formula.(tariq)
If I want to replace a 26KW Slip ring Motor with a Squirrel Cage motor & Drive (for a Hoist Application). How can I approximate the Motor & Drive HP required in new Setup.
what is the efficiency of thyristor
Why squirrel cage motor can only use with low starting loads ?
model question paper for supervisor trainee
how to select diiferent power transformers of same capacity on no load loss and full load loss by economical point of view.?
Define ohm’s law for a.c (alternating current)?
Can Anyone suggest the Standards (IEC or IS) for selecting copper current density?