Answer Posted / k.prakashchandra

An earth fault between CTs of primary and secondary sides,
as the fault current will not pass through secondary side CT

Why need 3phase machine double earthing?

1719

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Why 9KV surge arrester having 7.65KV of MCOV?

1510

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In MEP Services what are parts of STP and what are there function?

3497

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Why frame of the motor is specified?. If we mention KW and voltage level,automatically frame is decided or separately frame is compulsory to mention?.

1689

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What is milivolt dop test in Busducts? What is its significance & procedure to do the test?

2032

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I have iti elec, 1st aid, and 5 yrs experience in 7.5 mw power plant. Am i eligeble for 11kv license in telangana state..when, how to apply for that.?

2255

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HOW TO CALCULATE THE HEAT AND LOAD OF LT-SUBSTATION WHICH CONTAINS 2*1MVA TRANSFORMERS,LT SWITCH BOARD,MLDB,ACB,BUSBAR,ETC...?

3896

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generally in LT and MV motors we are using 3.5Coresx16,25,35,50 etc cable for supply.although motors is earthed at two point and having all protection.then why we are using that 1/2 core for earthing the motors.while in HT cable we are using only 3core cable for motor supply.generally lt and mv motors are delta connected and ht motors having star connection.whethere it is having any relation with winding connection( star or delta).all motors i am talking about are dol only.can anybody solve my confusion.thanks...

1874

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Define the term factor of inertia.

2000

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what is the value of combined earthing in general electrical circiut?

1842

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WHY IL=IPH IN STAR AND WHY IPH=IL/1.732 IN DELTA? WHAT IS REASON BEHIND IT?

6244

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Control wiring of a dol starter for forward and backward

1503

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Differentiate between kirchhoff’s first law and kirchhoff’s second law?

995

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if the load is 80 amp for main fuse and 100 amp for breaker so how can we calculate the cable size (cooper ) .

2017

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How many methods use the load flow solution?

1268

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