open circuit test when performed on double the voltage &
double the freq, then what will happen with p.f and current
magnitude?
- 1 Answers
- 2156 Views
- Aarti Drugs, I also Faced
- E-Mail Answers
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
Logic using 1 kV or 1,1 kV grade in house wiring Low voltage cable. Explain/suggest? some use 1kV and some prefer 1.1kV grade insulation low voltage cable why??
If I want to lift the water at a height 50m from ground level through two inch(diameter) metal pipe then what is the capacity of motor pump is required? is it possible in single phase supply or not?
Why we use circular(Stepped) cross section in transformer core?
What are the relays in ACB and VCB
List advantges of active filter over passive filter?
how to handle 2500 kva transformar
Define availability (operational)?
how we find transformer capacity by ohm
how to calculate the breaking capacity of different breakers.
why a tester wont shock while testing the power in house
need to make a report. Need to choose a 3phase induction motor. Load conditions motor will operate in : Maximum Load: 30 Kw Speed: 2950 rpm Ambient temp: 20 cent Supply voltage: 440V Frequency: 50Hz need to look for the safety factor when choosing the motor, went through catalouge found a few, but dont know how to choose the safety factor allowing an extra load something above 30 KW to avoid any harm.
How to calculate no of Lighning arrestors are required for protecting 50mX 50m*20m cubical building and locations of LA?
why occ characteristics of generator is also called as magnatization characteristics ?
how can you size an automatic voltage regulator?
How to set a Zone 1 distance relay for distribution feeder?
