I want to know the currect formula for industrial lighting lux caluculation & light fittings selection

2 Answers   MRF,

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EARTH AND NEUTRAL ARE JOINTED OR NOT?

7 Answers  

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how bucchos relay works in a transformer

8 Answers   Indeco,

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which fault current is maximum: 3 phase short circuit, LG, LL or LLG?? why?? in one of the problems that i have solved, 3 phase short circuit current on an unloaded generator came out to be less than the LG fault current. can anybody please explain why.

2 Answers   Bhel,

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The objective of connecting a resistance and capacitance across gate circuit is to protect the SCR against

2 Answers  

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What are motor generator sets and explain the different ways the motor generator set can be used ?

0 Answers  

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Factory acceptance test. FAT. For 132 kv transmisstion towers what is that meaning and what are the tests commonly companies perform now days.

0 Answers   PKR,

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What is the equivalent circuit of a transformer and its vector diagram?

0 Answers   Bhel, Madhucon,

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What is dc current source?

0 Answers  

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what is post close & pre close of trip circuit supervision relay in circuit breaker control scheme?

2 Answers   ABB, NEK, Power,

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What is the difference between Isolator annd Circuit Breaker.

21 Answers   ABB, Lanco, NTPC, Power Grid, RInfra,

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How to test and satisfy the conditions of the vector group YNd1 for power transformer?

1 Answers   Areva,

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