1.why motor rating in kw instead of KVA?
2.why alternators rating in KVA instead of KW?.
3.why transformer rating in KVA instead of KW?.
Answer Posted / jagu
Transformer is independent of pf.Hence the transformer rating is always expressed in KVA.
In Motor the pf is dependent on percentage loading & hence expressed in KW.
| Is This Answer Correct ? | 0 Yes | 0 No |
Post New Answer View All Answers
why induction motors are rated at 0.8 power factor.
How to arrange a hous hold earthing system to keep minimum earth resistance( below 7ohms).
how to prepare the technical test
i want to know about torque of slip ring induction motor
what is the power rating of CPU, CRT type moniter, LCD type moniter,scanner Approx.
Why do we require transformer with less specific weight if supply frequency is increased?
how many types are their in switchyard or substation(like D,I TYPE), what is differant between them
how to calculate the power factor when instantaneous voltage and current has harmonics in it ?
what are the industrail measures to over ferranti effect? how would the ferranti effect the power system if those remedial mearsure arent taken? how often does this effect occurs in real power system?
What is icu and ics in Acb and how many time icu or ics passes from breaker?
Why syn. Generators are used for the production of electricity?
how we can calcultae the short circuit level for bus bar
Why frame of the motor is specified?. If we mention KW and voltage level,automatically frame is decided or separately frame is compulsory to mention?.
What effect does a very low impedance have on the Voltage regulation? On the short-circuit current?
Why does the rotor rotate?