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 is minimum permicible value of leackage current for LT Panle when applying voltage up to 3 KV for 5 Minuits?
Consider three heater bank connected in 3 phase star with neutral.Each heater bank connected in each phase.So each phase get 230 volts supply.my question is,during balance condition, current flow in neutral or Not
What is the RMS and DFT principle of analogue maesurments. Which way they are advangages. where which princples give optimum results.
hello friends.. I have a doubt regarding the operation of dc machines.. I studied in a text book that a dc machine can be used as a generator and as a motor.. is this possible? If so,please send me the info about this topic.. you can also send your info to my mail.
give me atleast four differences between circuit and network
At full load wat is the motor p.f And at no load will is the motor p.f?
100 MVA 3-phase alternator with earthed neutral has a reactance of 5 ohms per phase. what will be the fault MVA of generator.
PLZ EXPLAIN THE INTERLOCKING AND CONTROLLING OF CONTACTORS????HOW CAN I DO THAT?
when we have to purchase the transformer by own i.e how much load will preferred HT connection?
how many joints are allowed in underground HT cable of 1 KM
The loads are connected with phase and ground then why current flow as the loads ?
wat is the first thing dat is needed, 2 lay a cable in some area??
what is positive , negative & zero equivalent system resistance
Define load factor?
is there any lightning by passer is arranged in ship like buildings?