what is post close & pre close of trip circuit supervision relay in circuit breaker control scheme?
2 23607In a circuit a capacitor (paper capacitor ) was burned due to over voltage in this case can we replace that type cappacitor with other tye capacitor ?
1 3603If the battery is in charging condition means, battery is which type of load? Capacitive or Resistive load?
2 6502how to select the surge suppresor for the 33 KV supply and what will be the rating, selection guide
1 3215Post New Electrical Engineering Questions
i m in need of current rating chart of heavy duty pvc/xlpe, cu/al cables. can somebody provide me? if yes, plz send me at ashish_patel111@yahoo.com
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?
Types of test in Switchgears, MCC, NGR and DB's how it should be procced. Can anyone give me the details here or email me to pasuvaraj.k@gmail.com
Mention the disadvantages of low power factor? How can it be improved?
Is there any specialised book to refer about fault level calculation both in MV and LV side??
Briefly describe your ideal job?
What is the working mechanism of OLTC in Power Transformers????
i m doing DEEE in part time,can i join regular cources in BE,,IF i join what the cources can i select like (civil,ece,IT) ,,kindly advice
How will polarity test of Dy5 Transformer ?
What is Electrical Grade Aluminum for Tubular BusBars. i am confused between 6063 and T6 or T5 and what is BS 2898 and BS 159?
why use phase displacement in transformer.and effect of phase displacement on transformer
in control panel, how can i measuring the distance between one bus bar to another bus bar. then now only for bus bar. in mpcb and contactor also. that means one mpcb to another mpcb how much distance? how can i calculate that.
What is the difference between the relay and the circuit breaker?
If any cable burnt how can we identify it burnt by high current of high voltage?
i m electrical diploma holder i want to do plc $ Scada some body tell me which insitute is best for me near chandigarh