Golgappa.net | Golgappa.org | BagIndia.net | BodyIndia.Com | CabIndia.net | CarsBikes.net | CarsBikes.org | CashIndia.net | ConsumerIndia.net | CookingIndia.net | DataIndia.net | DealIndia.net | EmailIndia.net | FirstTablet.com | FirstTourist.com | ForsaleIndia.net | IndiaBody.Com | IndiaCab.net | IndiaCash.net | IndiaModel.net | KidForum.net | OfficeIndia.net | PaysIndia.com | RestaurantIndia.net | RestaurantsIndia.net | SaleForum.net | SellForum.net | SoldIndia.com | StarIndia.net | TomatoCab.com | TomatoCabs.com | TownIndia.com
Interested to Buy Any Domain ? << Click Here >> for more details...


Why Trasformers rated in KVA

Answers were Sorted based on User's Feedback



Why Trasformers rated in KVA..

Answer / tulasidhar

Transformer rating is KVA Instead of KW.bcoz P.f is does not depend.

Is This Answer Correct ?    27 Yes 3 No

Why Trasformers rated in KVA..

Answer / satish r chude

cupper lose dependance upen the voltage and iron lose
depend upen the current. the total tx lose in volt and
current volt amper.VA.

Is This Answer Correct ?    21 Yes 2 No

Why Trasformers rated in KVA..

Answer / loboreliance2003

S(kVA)=P(kW)+jQ(kVAr) where S is total power, P is active
power (Power uses by a resistive load E.g:light, heater,
etc) & Q is reactive power (Power causes by an inductive
load E.g: Induction motor). For a load, we only wants to
know how much work it will do, so information of kW is
enough. However, for a transformer as it has to supply
power to the whole system, it will be affected by both
active & reactive power. So you will have to concern about
the total kVA of your system to choose the correct
transformer. If you only concern about the active power the
transformer can handle and not about the reactive power,
the total power of your system sometimes will be larger
than the total power of the transformer and will damage it.

Is This Answer Correct ?    8 Yes 1 No

Why Trasformers rated in KVA..

Answer / yogesh

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 in KVA.

Is This Answer Correct ?    5 Yes 0 No

Why Trasformers rated in KVA..

Answer / m.omar javaid

Its rating is in kva since it does'nt involve any phase
difference b/w v and i i.e pf independent.manufacturers do
not take into account what type of load is to be
connected ,it could either be resistive or reactive.

Is This Answer Correct ?    5 Yes 3 No

Why Trasformers rated in KVA..

Answer / pushpendra

Due to losses in transformer ,Because Full load loss(copper
loss)in term of current & No load loss(iron loss)is in term
of vollage .

Is This Answer Correct ?    2 Yes 0 No

Why Trasformers rated in KVA..

Answer / sunam yadav

due to true power p = VI

Is This Answer Correct ?    1 Yes 0 No

Why Trasformers rated in KVA..

Answer / sankar maiti(b.tech ee)

cupper lose dependance upen the voltage and iron lose
depend upen the current. the total tx lose in volt and
current volt amper.VA.

Is This Answer Correct ?    1 Yes 0 No

Why Trasformers rated in KVA..

Answer / sadik pasha

copper losses depends on current and iron losses depends on
voltage so efficency of t/f depends on these two losses so
t/f's rated in KVA.

Is This Answer Correct ?    1 Yes 0 No

Why Trasformers rated in KVA..

Answer / jey

Transformers and Generators are rated in KVA bcoz PF cannot be calculated( Cu loss depends on Voltage & Iron loss depends on Current). Always the Source end i.e transformer , Generator, power factor cannot be calculated and it is rated as KVA and Destination end i.e is Utility side such as Motor are rated as KW

Is This Answer Correct ?    0 Yes 0 No

Post New Answer

More Electrical Engineering Interview Questions

What shall be minimum thickness of firewall in between two transformers and which code specifies it ?

1 Answers  


What is Ton Capacity of Air Conditioner?

1 Answers   TATA,


What exactly is meant by harmonics and harmonic current?? and what is skewing with regard to this??

2 Answers  


What is core CT & it's function?

0 Answers  


how to calculate the cable size

3 Answers  


Does RCCB do the job of MCB? Lets take 16A RCCB. it trips when residual current exceeds 30mA. does it trip in an over current situation, i.e when current exceeds 16A ??

2 Answers  


How we do the maintenance of Servo motor, even we cant open it?

0 Answers   ITC Infotech,


Why the capcitor to be discharged after put in to operation & why not inductor though the both elements stores energy?

3 Answers  


what the function breaker failure scheme, how is it operated

0 Answers  


What is the Ohms low calculation

2 Answers  


if the supply frequency increases what happens to the motor load

2 Answers  


a power supply to be constructed from voltage cells is required to provide Max. 20A Current with a terminal voltage of 6v.Several voltage cells are available each of which has terminal voltage of 1.5V & each of which can supply a max current of 5A .the no of cells required will be ??

5 Answers  


Categories
  • Civil Engineering Interview Questions Civil Engineering (5086)
  • Mechanical Engineering Interview Questions Mechanical Engineering (4456)
  • Electrical Engineering Interview Questions Electrical Engineering (16639)
  • Electronics Communications Interview Questions Electronics Communications (3918)
  • Chemical Engineering Interview Questions Chemical Engineering (1095)
  • Aeronautical Engineering Interview Questions Aeronautical Engineering (239)
  • Bio Engineering Interview Questions Bio Engineering (96)
  • Metallurgy Interview Questions Metallurgy (361)
  • Industrial Engineering Interview Questions Industrial Engineering (259)
  • Instrumentation Interview Questions Instrumentation (3014)
  • Automobile Engineering Interview Questions Automobile Engineering (332)
  • Mechatronics Engineering Interview Questions Mechatronics Engineering (97)
  • Marine Engineering Interview Questions Marine Engineering (124)
  • Power Plant Engineering Interview Questions Power Plant Engineering (172)
  • Textile Engineering Interview Questions Textile Engineering (575)
  • Production Engineering Interview Questions Production Engineering (25)
  • Satellite Systems Engineering Interview Questions Satellite Systems Engineering (106)
  • Engineering AllOther Interview Questions Engineering AllOther (1379)