Answer Posted / nirmala
15 W
Is This Answer Correct ? | 5 Yes | 0 No |
Post New Answer View All Answers
What is the difference between DOL starter and star delta starter
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 can we connect additional batteries to three phase ups? What are parameters we have to check when connecting?
i will applied in 1U-1W on 440 volt primary delta side. what is the result of magtic balance test
How good are you in resolving the commercial issues to Employer's advantage?
we have two motors 1250kW,6.6kV to be coupled on the same shaft ,so please provide assistance for their synchronisation.
HOW WE CAN REDUCE THE CIRCUIT COMPLEX OF STAR-DELTA STARTER .BECAUSE NOW WE USING ONE TIMER RELAY & THREE CONTACTOR FOR MAIN,STAR & DELTA ?IF ANY IDEAS PLZ POST.THANK U
What is conventional thermal current (Ith)
What is the approximate value of stacking factor?
1) why a dg set shows variation of power factor and load when synchronised with other dgs? 2)Why the load sharing is not become equal in all dgs?. 3)When a dg set will not run on auto start?
What is magneto on a gas generator. how it functions. its out put is d.c or a.c. how it can be checked for correct functioning
What is the use for cable entry in control room?
what is p.s impedance measurement test in earthing transformer?
Explain in details how you would react to an unexpected incident when your supervisor or manager is not around to give instructions?
Do u know any one? how to find out in motor rated amps? formula?