Answer / arup

ZONE 0 --Areas in which an explosive gases atmosphere (An
explosive gas air mixture) is present continuously or
present for long time.
ZONE 1---An area in which explosives gas atmosphere is
likely to occur in normal operation.
ZONE 2--An area in which an explosive gas atmosphere is not
likely to occur in normal operation and if it does occur,
it will exist for a short period only.

Why ferranti effect occurred in leading p.f load?

1 Answers  

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what is the step by step formula for calculating bus bar phase and neutral size of a panel board.suppose the incomer of panel board is 100A..???step by step answer please

1 Answers  

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difference between buscoupler & bussection?

1 Answers  

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what current is taken from a double wound 500kva transformer

4 Answers  

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In ACS 1000 drive we used 12 pulse convertor.Why dont used 6 pulse or 3 pulse convetor

1 Answers  

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pls define kvarh

2 Answers  

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what is power?

1 Answers  

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What is the meaning of CT 40/5, 100/5 or in HT lines 100/1 ????????

3 Answers   Amex,

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why it is so called as xlpe(cross linked poly ethyline) cable?

0 Answers  

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How would you supply power to a village which is very far from a sub-station and has only a 11k?

4 Answers   Power Grid,

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why supervision relay is used in incoming feeders?

1 Answers  

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what is the major difference between dc generator and synchronous generator?

4 Answers  

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