why a fan starts rotating in the reverse direction when condenser gets damaged?

1 Answers  

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How to know the back up time for a 5KVA UPS which is connected to 15 nos. of computers? Is there any formula for this? pls. tell me.

1 Answers   HAL,

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which is batter in construction job,ELCB or RCCB?

7 Answers   HCC,

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Difference between mcband isolator

1 Answers  

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What is applied voltage for meggering a 6600V HT cable

2 Answers   Sail,

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What are the procedures followed for underground cable laying.....???

2 Answers   KSEB,

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difference between the earth mat and earth grid?

3 Answers  

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How to calculate % Impedence?

3 Answers   ISRO,

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What are the differences between single phase and three phase?

0 Answers   ABB, Essar,

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pls tell about gas insulated substation?which gas is used for that substation?above which rating we are used this substation?how we take maintenance in that substation?it means substation fully shutdown or live condition?if live condition means how?pls clear this things

1 Answers   Essar,

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Explain the term parallel path in dc machin ?

0 Answers   UPSC,

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Two electronic energy meters are connected to seperate phase wires, but connected to a looped neutral. Are these going to function correctly?

8 Answers   DRDO,

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