Answer Posted / sridharan

winding insulation class gives mechanical &electrical
stability to the machines whereas winding temperature class
sive warning to the machine

we have two generators different capacity on 15 MW and other 6MW at 11 KV , 15 MW gen. bus short level current 40KA,and 6MW short level current 25KA,, length of cable 100MTR between 6 MW from 15MW gen. for bus coupling . kindly tell any one can we use both NGR OR one NGR from any GEN. BOTH NGR has diff. rating. Tariq pakistan

1679

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What is the formula for calculating the Instantaneous Short Circuit & overcurrent for any breaker

2014

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2. A current i=(10+10 sin t)amperes is passed through MI type ammeter. its reading will be.........

2323

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What is the use of iron core in a transformer?

1138

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In CTs tan delta point should be earthed , what is the reason behind it?

3029

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What is meant by short-pitched winding?

1209

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How much minimum insulation required between 11kv/3.3kv transformer windings?

2430

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i have gear oil pump with single phase motor.some time its motor starts running in reverse direction rather than forward direction...whats the reason behind this issue. 1- either capacitor is week? 2- or winding is week?

1415

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My question is abt backlog.I had dropped one subject in my second year, and completed this subject in the 3rd attempt, so how many backlogs i have got?1 or 3?plz sujjest the answer as soon as possible

2109

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why the perameters of secondary circuit are more important then that of the primary circuit of induction motor?

1917

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explain safety measures in alternator?

1790

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How many kinds of E.L.C.B and how to work E.L.C.B

2042

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what is ground fault in ACB?

2100

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what is the excess air in furnace

2045

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sir pls tell me . our ct specifications are 120/5 ,2 core , 0.2 and 5p10 class , 30va and 30va buden. insted of 30 va i want use 15 va. can i use?

1516

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