in Contactor opearation Why there is a difference in the values of the operate and release voltage in case AC supply

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what is the difference between active power and reactive power and apparant power in practical as well as theoritical

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i seen a 132kv/11kv transformer,and thier is a sugar factorys 10MW EXPORT PLANT,MY QUESTION IS THAT WHEN THEY EXPORT ELECTRICITY THEY USE THE SAME TRANSFORMER AND THE CONNECT IT TO 132/11KV TRANSFORMERS SECONDARY SIDE CAN ANY ONE EXPLAIN IT.. THE TRANSFORMER IS OF KIRLOSKAR MAKE AND IT HAS TAP CHANGER.

1 Answers  

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how to read AWG n how to convert AWG reading into mm?

1 Answers  

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How to Calculate Current Rating of SDFU (Switch Disconnector Fuse unit) for Protectionof Capacitor Bank connected to Busbar of 800Amp,in LV side of 11/0.433KV, 250KVA Transformer?

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What are the advantages of individual drives?

1 Answers   A1 Electricals, Suzlon,

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what is a core company? why should we join a core company?

1 Answers  

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In case of power/distribution transformer what is percent impedence?

1 Answers  

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What facility we get after CT secondary earthing and how?

0 Answers   Reliance,

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why can't we increase the voltage by increasing the field voltage in order to get higher voltage.so that we can eliminate step up transformer

4 Answers   Bhel,

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WHY EXCITATION OF SYNCHRONOUS MACHINE IS DC NOT AC

8 Answers   NTPC,

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why are use corona ring in high tension line switchgear?

1 Answers  

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