Answer / choudhri awais arain

vector group is important to use in case of parallelling of transformer.both transformer should have same vector group.
thn unbalancing of the voltages occure.

Answer / jayaram

electric curent have a some phase angle(phase to phase) so
used a vector form. it is used at which power have a
freqency

Why PT burnts?

2 Answers  

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how to decide cable rating? send me cable size,ampere rating data

2 Answers   Bhel,

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What is a differential amplifier? Also, explain cmrr.

0 Answers  

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Can we use MCCB with Auxiliary Contact in place of Contactor in a AMF System.

1 Answers   C&S, Farnek,

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in slip ring motor if motor specification is given how we calculate its rotor resistance in starting

1 Answers  

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what is rotatng magnetic field in case of three or multiple phase alternating current machines???

1 Answers   NHPC,

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what is the mechanism of operation of brushless dc motor why is it more wexpensive then ordinary permanent magnet motors

0 Answers   Lanco,

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how many earthing should need for UPS, where its connected

7 Answers   HCL,

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Why is the starting current high in dc motor?

0 Answers  

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What are the basic components of the feedback control system?

0 Answers  

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Transformer rating=> 15/20 MVA.Why there are two raings? What should be the rating of the fuse at the secondary if the voltage level is 13.8KV/4.16KV?

1 Answers   Bhel,

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Why fuse is? What will prevent by fuse?

2 Answers  

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