Why the generator rating in kva
- 32 Answers
- 98688 Views
- CompuCom, DLF, Genpact, HNG, SIPM, I also Faced
- E-Mail Answers
Answer Posted / ankit bhandari
In order to understand this clearly you first have to know
what is POWER FACTOR.??
P.F= active power/(active power + reactive power)..reactive
power is that power which is applied to the motor's rotor to
create more magnetic flux so that greater amount of torque
developes on the rotor for better speed.that reactive power
depends upon the
a)Air gap.
b)No.of windings.
i.e,if there is less airgap less reactive power will be
required and if there is more air gap large reactive power
is required. this is why motors have there different power
factor.so due to this rective power pf is taken into account
in case of motors.which means P=VI x Power factor.(KW)
WHILE, if we talk about generators we are applying
mechanical energy to the rotor means there is no rective
power is required.means only active power is being developed
so there is no power factor.which means P=VI(KVA)
I HOPE YOU UNDERSTAND...
| Is This Answer Correct ? | 0 Yes | 1 No |
Post New Answer View All Answers
At what speed an electric car can run with 2 HP motor of weighing 400 kg?
what is p.s impedance measurement test in earthing transformer?
hi....I am from india..i have completed my engineering in electrical and electronics field with 58.4% and my IELTS score is 5.5 bands....Recently i received my I-20 in computer and information science from Troy university in Alabama.On 18th i have a visa interview can u please tell me what type of questions i have to answer ??????
what things to be considered when designing UPS
An 8 pole, 50 Hz, 3-phase IM is loaded to a poing where pull out torque will occur. The rotor resistance per phase is 0.3 ohm and motor stalls at 650 rpm. The slip when motor stalls is A 1 B 0 C 13.33% D 10.33%
In AC if the direction of current keeps reversing every half cycle, how does it propogate through the transmission lines?
How do you determine the size of transformer radiators in a transformer?
How to calculate Voltage regulation of 22 KV Over head Line.
1. If 8.35%Z means the percentage impedance of 132kV-line from power company, we will like to reconfirm its base capacity.
How to see the inductance in a transmission lines
how does the thyistor work in dc drive?
what is the step by step formula for calculating bus bar phase and neutral size of a panel board.suppose the incomer of panel board is 100A..???step by step answer please
our industries ht line so power fluctation(once drop of power please rectify causes
What are the limitations of Kirchoff's laws?
how does a submersible pump work..?
