Answer Posted / k.prakashchandra

It was introduced to India by Britishers to suck the smoke produced by fireplace from the bottom of the room . But they found that cooling was more important in India and changed the direction to blow the air downwards . Bi-directional ceiling fans are used where sucking is required during cold season and blowing during warm season.

list the type of vfd? wich is sutable for heating kiln?

2105

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What is the earth treantment procedure?

2080

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Why frequency changes due to load variation in power system ? i.e why when load increases frequency decreases?

1915

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Parts of machine and their discription in details with suitable photo

2063

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Either the Armoured Earthing strip of HT 3 core cable have to pass through CB CT or not , why ???

2091

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How to decide DO set rating of Transformer?

1663

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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.

3888

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how we can decide that what value of ht line will come to any commercial building? (ans except According to the building load)

1670

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How to know the Max. current caring capacity of the cable by its size ?

1659

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Fantio of tranformer

2242

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what topics we have to concentrate for power grid et.written test.and tell what to read for english synonyms and antonyms.

1956

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Why the magneti fields are not passes from southpole to north pole

2134

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How to test the Secure Elite 440 Multi function meter working condition.

2169

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what are the difference between AC lamp and DC lamp

2097

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what is the purpose of slope in the differential relay?why we are using two slope?but in busbar differential we are using only one slope.why?

2919

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