open circuit test when performed on double the voltage &
double the freq, then what will happen with p.f and current
magnitude?
Answer Posted / pankaj deshmukh
As mentioned open circuit test there would be zero current , and when frequency is doubled it also does not cause any change in current and P.F.
there may cause a little more eddy current in winding, This may cause any trouble in transformer though this test is being done for check winding insulation bearing capacity.
if this answ. is found any mistake or wrong concept kindly text msg in your ans.
| Is This Answer Correct ? | 0 Yes | 0 No |
Post New Answer View All Answers
what precautions to be taken while desigining a LT,HT panel. Eg-LT panel PCC panel with ACB installed. HT panel VCB panel with VCB installed. & what is main diffrence betwn IP54 & IP55 construction of panel.
why on delay timer used for fully automatic star delta starter?
Hello everyone, somebody knows what is a "surplice power" ? The hole phrase is: "This rating is appropriate for a generator set paralleled with an infinite bus e.g. a national electrical supply network or grid where the generator set is run at 100% load, 24 hours a day, 365 days a year and any surplice power is exported into the grid" Thanks in advance.
witch pump used in wtp
I COMPLITED MY B.TECH AND 10TH CLASS WITH 70%MARKS BUT 12TH CLASS 55%MARKS..CAN I GET INDIAN RAILWAY RECUREMENT EXAMINATION?
Write down the name of 2 lady Bir Pratin of Bangladesh
Tell me all plants load factors i.e which plant operating on which load?
design a LV scheme for a 15 storied building?
what can be the causes of capacitor start motor having a higher current that its actual
in battery charging room we find two fuses (one in positive other in negative cables ).why it is so?one fuse is ore than sufficient?
The height to which the liquid in a tank to be maintained for a certain constant velocity?
What is an order of a system.
why the earth is taken minimum in supplying? wather it the proportional factor to getting work any equipment or a power plant?
formula for calculation of switchgears(i.e. contactor, fuse, cb, relay etc.), if load current is given?
Different STANDARDS (BS, IS, IEC etc) gives different informations on CT specification. How they correspons w r t each other (i.e I mean to say BS provides "knee point voltage" but IS does not, then how can i select CT)