I AM FROM ELECTRICAL ENGINEERING ? I AM ASPIRING FOR "BHEL".HOW I HAVE TO PREPARE .ON WHICH TOPICS TO BE CONCENTRATE MORE.PLEASE GIVE FULL DETAILS OF WRITTEN EXAM.

0 Answers   Bhel,

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Hi If connecting a temp generator 670KVA .415kv with step up Tx .415/11kv. I am given Generator impedances Z1 Z2 Z0 to 100MVA base. Do I need to work out the generator fault current by using these impedances i.e gen rating / impedance. Then use this as my source impedance for the calculations that follow.

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why the transformer neutral give to the earth ?

2 Answers   Jindal, JLL,

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What is meant by system?

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Difference between On Line capacitor and Station Type capacitor.

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How to Convert Gen KW to H.T amps ?

2 Answers  

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Explain the experiment on ward leonard method of speed control of a dc shunt motor.

2 Answers  

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MY QUATION IS ABT THE MAIN POWER TRANSFORMER IN STEEL PLANT , I WISH TO KNOW THAT WHY TRANSFORMER PROTECTION NOT TRIP AS CABLES ON THE SECONDAY SIDE IS WATER COOLED. TRANFORMER DETAIL NORMAL KVA--150 KVA PRIMARY VOLTAGE --34.5 KV SEC.NO-LOAD VOLTAGE---1.290-908-690V ( WITH PRIMARY DELTA CONNECTED) CONNECTION--D/d (EXTERNAL CLOSED) CONSTANT RATEING FROM--1.290-908V CONSTANT CURRENT FROM--908-690 VECTOR GROUP--D III

1 Answers  

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why is only third harmonics is dangerous for electrical equipments?

3 Answers  

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some practicle study shows that the reactive power at the receiving end is not equal to the reactive power at the sending end.But according to theory the reactive power is exchanged by different parts of the network – capacitors and reactors permanently, but is never consumed or produced. Then Where that reacrtive power loss occuring?is there any formula to calculate reactive power loss?

3 Answers  

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what is meant by flywheel and its role in retardation test

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What is the acceptance value of leakage current in HI POT test

2 Answers   CPCL,

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