Explain what is electric traction?

1139

why most of junction box vendors providing T5/T6 Temp class jb's for T3 area any special reason?

2101

how to find the capacitance value of the motor while running??

1930

Ratings of power transformer,Distribution transformer.

1612

How may I get the maximum current capacity for a particullar size Alluminum or Copper cable if there is compulsion to use?

1921

What is mason's gain formula?

1300

3 phase induction motor connection star or delta while using ac drive motor is .75 to 5.5 kw

1963

what are the 4 rules to start the motor?

2122

DRAW ACIRCUIT DIAGRAM OF 100 KVA 415V/55-0-55V DELTA TO STAR TRANSFORMER

2044

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?

2277

Why a Permanent Magnet Generator has higher frequency as compared to frequency of main alternator?

1990

How do i carry out or know the vector group of a Dyn1 and Dyn5 transformer

2048

How do we find the rating of a transformer, if it got burnt badly.

1556

Dry type transformers

1878

What do you mean by transformation ratio of instrument transformer?

1093