Why Most Engineers aren't Fit for Public Office?

The Question: Why Generator is Rated in KVA Not in kW?

Answer-1
Because Generator is a Mechanical equipment that Converts Mechanical power to Electrical. They have no definite power factor, they are only depending on the connected loads, and they consume reactive power according to its load. Alla Gen and transformer makers doesn’t know about consumers load that is why they design their gensets in kVA.

Answer-2
The generator generates only the appearant power, which is measured by the KVA but the kilowatt uses the real power which is comes from the load side according to the power factor rate, the appearant power symbolized by the letter S and real power symbolized by the letter P. P (real power) can be calculated by multiplying S (appearant power) into the power factor.

Answer-3
Generator converts Mechanical power into Electrical power. It’s Output is Electrical. their Power factor depends on the nature of connected load such as resistive, capacitive, and inductive load as they consume active and reactive power according to the load. unit of active power is KW and unit of reactive power is KVAR. That’s why they are rate in KVA. On the other Hand, motors are rated in KW because its output is mechanical. Designer know exact mechanical load and power factor. So motors are rated in KW.

Answer-4
Kw is the unit for real power ie the power required to do actual work. There is another component of Electrical power called the reactive power expressed in KVAR (this power is just like friction for mechanical systems a necessary evil). Considering the different loads available the active and reactive power varies. A well designed load will have Kw>>KVAR. Now to the part to answer the query. The vector summation of active and reactive powers is called apparent power which is expressed in KVA. Any generator manufacturer will specify the total power that his machine can provide and how efficiently it is used is upto the customer. Hope this clarifies.

Answer-5
It's more useful to describe how much resistive and reactance power you have at your disposal. Power factor tells us how much reactive power is present( kinda wasted power but necessary) the closer to 1 means less wasted and more useful power..... 0.5 power factor means half the oomph isn't there to do work. (trying to simplify the concept.) p.m me and il send you some homework

Answer-6
Kva = kw + kvar, only in case the load is R then kva = kw