Interested to Buy Any Domain ? << Click Here >> for more details...
Why Transformer in KVA?
- 41 Answers
- 92100 Views
- APCPDCL, Apollo Power, College School Exams Tests, Electrical Tech, Hitech, HP, L&T, MDL, Oil and Gas Jobs, TATA, I also Faced
- E-Mail Answers
Answer Posted / yogesh kumar
kVA is the unit for apparent power. Apparent power consists
of active and reactive power. Active power is the share of
the apparent power which transmits energy from the source
(generator) to the user.
Reactive power is the share of the apparent power which
represents a useless oscillation of energy from the source
to the user and back again.
It occurs when on account of some »inertia« in the system
there is a phase shift between voltage and current. This
means that the current does not change polarity synchronous
with the voltage. But the heat generated in a winding as
well as the eddy current losses generated in a transformer
core depend on the current only, regardless of whether it
aligns with the voltage or not. Therefore the heat is
always proportional to the square of the current amplitude,
irrespective of the phase angle (the shift between voltage
and current). So a transformer has to be rated (and
selected) by apparent power.
| Is This Answer Correct ? | 1 Yes | 0 No |
Post New Answer View All Answers
why would amp draw on neutral wire be as much as amp draw on the hot leg.
Bimetal strip used in overload relay what is that,which types of material used for that & percentage.
IF I KNOW THE AREA OF CROSS SECTION OFTHE WIRE , WATTAGE OF THE LOAD ,VOLTAGE SUPPLY WHAT IM GIVING TO THE LOAD AND ALSO POWER FACTOR OF LOAD ....... SO GIVE ME FOR WHAT AMOUNT OF CURRENT I SHOULD USE WHICH TYPE OF CABLE?
why do we use 25kv supply for traction purpose?
what is thermal resistance of PVC Cable.
what is the difference between fault current ant short circuit current?
WHAT IS THE FAULT WHEN 100HP TURBINE MOTOR TRIPS, LIST THE FAULTS AND ITS TRABULESHOOTING TIPS.. MY AUTO TARNSFORMER STARTER TRIPS
What is pole of the system?
why d.c produces corrosion
i need to now what will be the cable size to the following load, transformer to distribution panel distance 110m, load 1000kw, voltage 400v, pf 0.85, permissible voltage drop 2.0%, overhead line, atmospheric temperature 35 degree c.
A logic circuit that provides a HIGH output if one input or the other input, but not both, is HIGH, is a(n)?
what is the max. acceptable leakage current in 33kv bus bar
is it possible for different brand of H.V transformers to run or operate in parallel to each other? if so how much disturbance can this affact the H.V bus bar?
How can we convert 11 kv to 440 volt without using transformer ?
how to modify DOL control panel into Delta Y connection?
