How to test Power Transfomer vector group in the field?

3 Answers   Al-Yamama,

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In a simple spur gear train, gears with 24, 48, 32, 72 and 96 teeth are in sequence. The gear with 24 teeth runs at 900 rpm. The speed in rpm of gear with 72 teeth is

1 Answers   Caterpillar,

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Operation of isolators.

0 Answers   KSEB, L&T, Siemens,

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How npn and pnp transistor works

0 Answers  

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what is main difference between live tank and dead tank current transformer?

2 Answers   Atul,

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can u name the different types of motors used in different types of applications?

6 Answers   ABB, Bhel, SBQ,

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Two liquids hot and cold in two vessels are there and an metal bar acts as a conductor of heat between the two vessels. what happens then. what happens after 24 hrs?

0 Answers  

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Grounding. Dear all at one of my site we checked the amps at the earthing cable to the alternator it was found 125 to 130 A. at the neutal cable in same machine found 146A. in the same plant checked the earthing current on other alternator it was 52A, and neutral 116 A. we are facing problems with our controller and the card was damaged once. can that neutral/GND current be a reason? as there is common grounding for the Alternator,Brkr panel,Transformer?

2 Answers  

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Can anyone tell me what will happen if AC & DC supply get mixed???

9 Answers  

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What are the types of power in electrical power?

0 Answers  

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What is the difference between Off line UPS and Line interruptible UPS?

1 Answers   Etisalat,

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why transformer comes only in standard rating like 11kv,33kv,66kv....and not like 33.33kv and so on?

3 Answers  

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