It is desired to flood light the front of a building 42 meters wide and 16 meters hig.Projectors of 30 degree beam spread and 1000 watt lamps giving 20 lumen/watt are availabl.If the desired level of illumination is 75 lumen/m and show a suitable scheme.Assume the cofficient of utilization, deprecitation factor and waste light factor are 0.4, 13 and 1.2 respectively.

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Transmission lines usually use a.3 phase b.2 phase c. Single phase

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Differcence between UPS and Inverter.

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What is the function of UV coil ACB?

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While performing stability test of differintial cts how to know the voltage and current on both side of the transformer?

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Is there any decided or standard frequency to check the meager testing of transformer, DG set, LT Panel in the industries in a year. I means how many times we should be check the same.

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How can determine cable size with respect to cable length and area in mm2

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What is the difference between Earthing & grounding

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I would like to install the largest KW alternator to a 200 amp aluminum bus box in my home. Is it possible to install a 250 KW 400v 251amp synchronous alternator to my home?

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What is the name of the winding from which the supply is taken for load connections?

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what happens if generator is running leading power facotor?

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