why we are caling 440 volt 3 phase supply instead of 660
volt 3 phase supply? because each phase as a voltage of 220
volt. if anybody know the answer for my question please
send it to my mail id. thank you.
- 3 Answers
- 22149 Views
- College School Exams Tests, Jindal Steel and Power, JIOL, NEC, I also Faced
- E-Mail Answers
Answer Posted / syed qamar abbas
Because its a phasor sum not an arthimetic sum, all three
phases are displaced each other 120 degree apart, so we
have to add them taking consideration of this angle
| Is This Answer Correct ? | 26 Yes | 23 No |
Post New Answer View All Answers
the winding of Generator and Motor is star or in delta ? and why
What is the difference between a fuse and a breaker?
What is ramp signal?
a starter used for squirrel cage induction motor?
Dear friends I want to design busbar for1600 kva transformer(i.e2100 amps) what are all the factors to be considered before selectinga busbar what are all the standard sizes of busbars what is the formula for finding current of copper and aluminium busbar
I am using submission of two ct in one and half scheme for 67/67N protection. Both CTs star point is grounded separately near ct box.Will two point ground give wrong tripping to 67/67N during fault or no matter.
How will you justify IR value and Charging voltage of any motor,transformer and Cables.......???? . . . . . . . . Plz tell me any body Baljeet Singh, engineer_89@refiff.com
what causes contact chatter when there is no demand on the air conditioning unit?
how can service sitting be setted for MCCB?Example for sittings IR (CURRENT RATING),IS(CURRENT STARTING)IO (current operating)?
3Cx240 & 3Cx300 sqmm Al. cable from lv side. What is the calculation for this cable??
How to check the Bushings of the transformer?
Why efficiency in thermal power plant is low?
Make a list observation on Transformer?
working of diesel generator ?
TO CALCULATE THE RESISTANCE OF GRR OF HT MOTOR 400KW WHEREAS STATOR VOLTAGE 6.6KV AND ROTOR VOLTAGE 705V AND ROTOR CURRENT IS 346A.
