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Answer Posted / gaurav
It is cooling fans and radiators, as such insulating oil is
not a coolant.However the insulating oil is the medium, by
circulating it we can supress the heat
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Dear Sir I am living in Jaipur Rajasthan now I did complete my b tech degree in electrical engineering in 2012 Sir how I gate certificate of competency for electrical supervisor
I need to connect a synchronous generator to the grid using automatic synchronization and two circuit breakers (one for synchronization, one for end connection to the grid), how to determinate the required diameter of the cables?
What if high voltage side circuit breaker of a ehv transformer instead of lvcb? Kindly elaborate.
what is spadar bar .why I use in DC generator.
what is the calculation involved to design the heater to heat 10KL of water in temperature control unit?
which one is more efficient, torq, power & ecnomy with the same frame size AC motor / DC motor?
how ceiling fan worked?
How does "OUT OF STEP" relay ,for Synchronous motor protection, work?
What are the advantages of autotransformer?
How can we checked Killo Watts of Motor & Alternator?
What is dynamo?How it works and what is the function of dynamo in a DG.
What is the difference between a fuse and a breaker?
why the voltage and current in a long transmission line are called travelling wave?
how can I calculate charging current of cable/overhead conductor? what is roll of voltage in it ?
1. What is differential relay? How it operates? 2.How to calculate the Short Circuit Impedance in Transformer? 3.What is the alternate solution for testing of polarity by using polarity tester while its milli ammeter does not works? 4. While testing the 33KV Busbar by using Hipot kit, what should be the test voltage we have to apply? 5. What is the procedure/activities to be taken to inject the current more than 2000A by using 2000A Loading Transformer? 6. Explain how you can give the overload setting to any Motor Protection Relay for a HT motors with formula and example? 7. Why restricted earth fault protection is needed? Why can’t differential Protection is sufficient? 8. What should be the minimum and maximum ohmic value for earthing? 9. Why DC Currents are not used in transformer? 10. What is the Frequency while we step up the voltage from 220V to 11KV? Is it possible? Explain it?
