Answer / sher singh

50*6mm

Answer / parthasarathy

For copper strip- 25*5 is enough.
For G.I strip - 40* 6 or 50*6 is enough.

if dc motor can operate by ac supply ? if its possible means how ?

2 Answers  

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We have two APFC panels in same station. I need how to connect CT in two APFC panels.can we take one CT in series connection or two separate CTs.

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why nutral and earthing wire connect with each other in main panel board.

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Tell me harmfull effects of over voltage,under voltage,spike,surge,transient & noise.

1 Answers  

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1.two coupled coils with L1=L2=0.6 H have a coupling coefficient of k=0.8 the turns ratio N1/N2 is......

5 Answers   BSNL, SSC,

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why star connected transformers used in tneb?

1 Answers  

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- two pumps must work with them at the same time but if the first pump start the second pump  must delayed for some time to start  also , with motor rated power = 90 KW and rated voltage = 380 V and rated power factor = 0.85 lag please draw the power and control circuit for it and determine all circuit components parameters that you use it

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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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what is the differencce inn series and cascade connection??

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we often use the word HT (high tension) line.or we say HT switch gear, whats does HT basically mean. is it different from high voltage.

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What is an iron loss or core loss pi?

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What is GND Transformer?

2 Answers  

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