Interested to Buy Any Domain ? << Click Here >> for more details...
Why Transformer in KVA?
- 41 Answers
- 90765 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 / arvind singh
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 ? | 2 Yes | 0 No |
Post New Answer View All Answers
LT cable fault chaecking equipment and to find out the distance at what distence it failure . Name and where it is available?
Explain what is electric traction? Explain few advantages of electric traction system?
Briefing the effects of ASR and ACR of a double closed-loop speed regulating system.
How to confirm the Phase shifting Transformer VECTOR GROUP relation , as below ZNy11.45d10.45-ZNYy0.15d11.15
Why do we avoid electrical conduits in floors at apartments?
what is the acceptable value of TAN DELTA and dissipation factor for 11kV, 1.75HP Motor?.
What do you mean by lighting transformer?
the typical output of a solar cell is........
How to calculate main incomer rating of APFC Panel ? Let's say i want to find main incomer for 11kV, 1000kVAR Panel.
what happen if the load connected to the induction motor is taken away? the same question for synchoronous generator in synch i think that the the exitation voltage will appear on the terminal only if so plz answer me
What is servo lock in CNC how they work and if any parameter for them in CNC machine
Define ampere
what are the possible reaons & remedies if resistance of NGR getting heat up
what is the necessary of using inductance property in transmission lines even through resistance is used to opposes the high current flows in that?????
2. What are the parameters of EHT sub-station?
