what is the name of oil used in transformer
Answer Posted / s.jayachandran
Minaral oil
Is This Answer Correct ? | 24 Yes | 9 No |
Post New Answer View All Answers
formula for calculation of switchgears(i.e. contactor, fuse, cb, relay etc.), if load current is given?
what is formula for calculate thermal overload in new numiricalrelay( not in bimetal relay)?
what is meant by 2 within a star in a voltmeter dial?
What is the difference between the impedance percent and impedance voltage ?
what is the difference between STAR and DELTA connection and application wise how it can be utilizedd
7- What is the Dissipation Factor and the difference between it and Insulation Resistance Test? 8- What is the task (function) of DC and AC reactors in power plant? 9- What is the task (function) of (open delta with earthed) in some types in transformers? 10- What is the base of the selection of the vector group in transformers? 11- What is the zig-zag transformer and its function by drawing in large detail? 12- What is the polarity ? 13- Why we make short between phase(R) in high side and phase (r) in low side in vector group test? Where High Side ( R ,S and T ) and Low Side ( r ,s and t ). 14- What are the time on delay and time off delay? 15- What is the vector group? 15- What is the task (function) of different types of vector group such as Dyn11 , Dd0 , YNd1,……..,?
how is the magnetic current test is different in delta-star and delta delta transformer.
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?
how could we calculate the no of outgoings from a 800 watt distribution board
How to design the no. of ceiling fans required in 5mtr X 10 mtr X 3 Mtr hight room?
How does a transformer contribute towards the widespread popularity of ac system over dc?
How shall i select the value of capacitor or inductor in a system?
what happens when dc generator coupled with cycle shaft.also explain what happens when its loaded
what shall be no load voltage of 132/33 kV transformer ? is it 33 kv of 34.5 kV
What is the formula to find out two phase active & reactive power