what will happen if we double the input frequency of a
transformer keeping the voltage constant?
- 6 Answers
- 22438 Views
- I also Faced
- E-Mail Answers
Answer Posted / dinesh b.e
The same current will flow for both 50 and 100Hz frequency.The Only difference is hysteresis losses will be more if 100Hz given as input. .Which only used to test the transformer's for 60second to check insulation withstand capability. .Generally hysteresis losses will be there in transformers which depends upon core quality. .Magnetising and Demagnetizing of core for 100cycles leads to increase in hysteresis loss.That is losses in form of heat .Which gives raise to increase the oil temperature.Due to this effect , chemical reaction Will take place between copper and sulfur content in oil.finally formation of copper sulphate,which acts as a conductor and settled upon windings . circulating current Will be there due to mmf.which leads to heat and damages the windings dielectric strength.
| Is This Answer Correct ? | 1 Yes | 0 No |
Post New Answer View All Answers
How can we calculate the efficiency of a Running (On-Load) Motor ? What parameters are required and what is the method ?
what are the protecyion of transformer & generators
why 1.7Uo for HV cable Hi pot test?IE standard why?
number of I/O devices in siemense plc
What is a Phase shift meter? Where can I get one?
I'm looking for a mnaual set for a Teradyne J750. Softcopy would be preferred but I'll take what I can get.
Why air circuit breaker off due to power failure?
If a shunt Dynamo has induced emf 100V and 0.4 ohm resistance and battery of accumulator of open circuit emf 110V and 0.5 Ohm resistance are in parallel what is common terminal potential difference?
What tests should i carry over on a newly rewinded DC Generator with voltage rating of 38 volts and current rating of 350 amps, to certify that the machine is OK?
dg started in plc mode and load taken later one battery terminal connection will be disconnected by loose connection what will happen for dg and shall we connect battery terminals while dg in load time?
how braking & making capacity of circuit breaker is calculated?
Can you used moeller lzm1 mccb in a dc system with 125vdc and 20ka short circuit current , beside is it have 24 or 48 volt shunt ? Beside how long current can through from An MCB shunt contacts? (like Z7-AS 24 V)?
what is smartµ grid technology?under coal gassification?
is oil viscosity affect on motor current?
HOW CAN I GET 5CORE HO7 CABLE SIZE IF I HAVE 1800A?
