what is the illumination level required for child play area?

0 Answers  

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How Can I calculate for the photometrics requirements for a street lighting? Data given are: 45 units of 6 meter light pole with 150 watts metal halide lamp, 220 volts and installed in a promenade area.

0 Answers  

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1. What is the exact formula for one weber? for example,(one ampere = one coulomb electron of electrons crossing a point of conductor at one second. i.e, 1A=1Q/1sec)

0 Answers   Bhel,

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how to syncronize two dg sets

3 Answers  

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what is mean by derating factor?

4 Answers   Essar,

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electric shock is due to current r voltage.?

12 Answers   National Steel, TCS,

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Why 50hz and 60hz frequencies are used by the world, why they are not taking 55hz?

3 Answers  

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EXPLAIN WORKING PRINCIPLE OF ALTERNATOR & MOTORS.

2 Answers   L&T,

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why in some trains in India Electric equipment such as Fans , tube light not work until locomotive or engine is attached to the train ??

1 Answers  

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I want formula to calculate cable size as per load given in length & amp. I searched many sites but didn't right answer. Please reply me asap.

0 Answers  

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how we select the fuse and OLR rating for 3 phase induction motor from 1HP TO 100 HP?

2 Answers   Thermax,

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what is soft starter?working principle?where it can use?

3 Answers  

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