Answer Posted / umar

magnetic field

What is icu and ics in Acb and how many time icu or ics passes from breaker?

1561

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What is the theoretical reason for the size of a zig zag grounding transformer to be 1.732 times less than that of a wye-delta grounding transformer used for the same application?

2285

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What is the mechanism of WTI

1807

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what is mean by dual digital protection in the relay field?

1941

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What are the application of filter?

1072

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how we can calculate 2 phase welding transformer rating or total power?

1880

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I am applying for NTPC examination.Can we please provide previous paper to my mail prasad.chintala108340@gmail.com

2205

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Dear sir, iam completed iti ncvt electrician 2000-2002 & diploma electrical eng completed 2008-2010 distance education in rvd university, still i got B licences only but my working company want C licences, how to i get c licencese pls reply me iam in critical situation thank you karthick 9841637803

1701

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How many types of faults are there in 3 phase power system?

1098

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Benifits of 3ph 4 wire metering over 3ph 3 wire

2477

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Hi Suppose we have a wye/wye transformer which is grounded at both sides,in this situation, do we have ay ground transformer? in other words, ground transformer can do any thing more (while we have nuetral wire in both sides)? As the last question, what about 3rd harmonic? we have two choices: first using wye/delta transformer + ground transformer and second using wye/wye earthed connection.in the former choice, we dont have 3rd harmoonic at the secondary side but what about Yn/yn conection? do we suffer from 3rd harmonic in the Yn/yn connection?

1976

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How many types of electrical earthing are there?

1198

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What is meant by system?

1076

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I have doubt that the supply HZ (very low or high than rated ) may affect the power factor. is it true. ?

1681

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why do we have spikes enough to burn electronic boards, when generators are not grounded

1817

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