why the power factor is low at no load?
Because at no load, the only significant current component is Excitation current which is 90 degree out of phase with the supply voltage. Since pf = cos(@) and @ is around 90 here, power factor is very low.
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Is there possible to Test Transformer for Overfluxing Capability. Or is there any firm who does Overfluxing Test on Transformer?
During FEED, you will have all the information with regards to cable. How will you calculate the MTO for MV and LV Cables? what are your considerations?
need help, please can someone tell me how can i calculate the main breaker and branches breakers to distribution panels (MDB) depending on the load ampere .. i really need it but can't find any site >>
In Single Phase AC Supply,If Voltage between Phase and Neutral is 230V means what will be the Voltage between Phase and Earth?
What is HT? And specify the range of voltage?
what is high and low cut off voltage of BB and DG at SPS????????
What is the battery voltage limit
what are inductive and capacitive voltage transformers.what are their applications
what is the significance of 3.5 core cable? or what does this half core mean and why is it required?
I have a 3 phase 600 volt prim. feed and a 120/208 sec. Isolateing tranformer .We are using this system for safety against shock . What is the proper grounding ?? Does the common on sec. get earth ground ???
what should be the resistance between two winding. Let 10 kw motor
why we are using starter