Interested to Buy Any Domain ? << Click Here >> for more details...
Answer Posted / gaurav kr rai
in a conductor the resistance on the surface is lesser than the resistance in the core of the conductor because of the cross sectional area increased at surface as we know that resistance R is inversely proportional to cross sectional area.So when an A.C. current passes through the conductor mostly it travels on the surface of the conductor and this phenomena is known as skin effect.
| Is This Answer Correct ? | 0 Yes | 4 No |
Post New Answer View All Answers
What is the application of Dyn1 and Dyn11 vector group of transformer?
Dear all, I just want to ask an expert on this forum for some insights. For the magnetic balance test, when applied voltage on a Delta-Star transformer e.g. Dyn11, the following relationships apply for HV side: 1. H1-H2 = H2-H3 H3-H1 2. H2-H3 = H3-H1 H1-H2 3. H3-H1 = H1-H2 H2-H3 For the LV side also: 4. X1-X0 = X2-X0 X3-X0 5. X2-X0 = X3-X0 X1-X0 6. X3-X0 = X1-X0 X2-X0 Is there a similar pattern for Y-d, Y-Y, D-d? And how about Y-z, D-z, Z-y transformers? I've tested a YNzn5 transformer and for LV side I don't see the pattern. In this particular case I got for LV side the following (see values below): H1-H0 H2-H0 H3-H0 X0-X1 X0-X2 X0-X3 128.0 119.9 7.2 29.2 13.3 15.8 70.7 128.4 59.2 23.4 22.0 3.6 7.2 120.1 128.1 13.4 29.3 15.8 What is the relationship here for LV? For row 1 I see the relationship, for row 3 I also see but it's shifted, but for row 2 I don't see such relationship. Any suggestions, answers, someone?
How to work E.L.C.B and how to connect in circuit.
What is the relationship between voltage,current & frequency?
What will be the impact on motor performance if a LT motor is rewound with changed motor winding data as given below:- Original winding data: total 04 wires = 02 wires of 17 SWG + 02 wires of 16.5 SWG. Changed Winding data: total 03 wires of 15.5 SWG wire size Motor rating: 160KW, 740RPM, 415V, ID FAN application. Normal Running Current = 95% of FL Current.
How one can check the MAIN of a house wiring ?
What is acsr cable and where we use it?
Testing procedure of DG alternator stability test
How to perform a DC resistance test In Alternator and their proceduces?
why the difference arise between HT reading & LT reading (submeters fixed in complexes, apartments etc)if the power factos exceed from 0.9 to 1 can the ht meter reads fast?
State The Difference Between Generator And Alternator?
In how we connect watt meter for open & short circuit test of a single phase transformer.
What is CVT and what is relation with wave trap?
Why is negative feedback invariably preferred in closed loop system?
please give some hindalco placement papers for written exam
