Answer / nalini

DC & AC

Answer / arul rajan

AC ONLY

Answer / jeff

dc only

Answer / vivesh yadav

only ac

how to calculate the cable size in sqmm if load (kw) is given?

5 Answers  

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what is different between IP55,IP54 and IP66?

2 Answers   ABB, Global Industries,

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what are carbondioxide and dcp used in fire extinguishers

0 Answers  

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I have a 1000 kVA Transformer(11kV/0.415kV) and a APFC panel of 400 kVAR(LT).Now if i want to remove the LT APFC panel and install a HT(11kV) APFC panel on the HT side is the HT APFC panel will work same as the LT APFC panel(improve the power factor),if yes what will be rating of the HT APFC panel?what is the formula to calculate HT APFC panel rating???

2 Answers  

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Why is the starting current high in a DC motor?

2 Answers  

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How maesure earth neutral value & how much maximum value value required in between earth & neutral.

0 Answers   Bellsonica, NEC,

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When we need start the motor by method of star delta which size (KW or HP)motor should must be operate in Star Delta Method,

3 Answers  

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Is it possible to measure correct value of earth resistance & cable insulation ristance with out disconncting earth lead & both sides of cable ends? If not, any other method to measure ER & CIR with out disconneting from the system.

0 Answers   HAL,

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What are the essential parts of a transformer?

2 Answers   NIT,

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ii) A shunt motor supplied at 230V, runs at 900 rpm when the current is 30A. The resistance of the armature is 0.4 ohms. Calculate the resistance required in series with the armature to reduce the speed to 600 rpm, assuming that the armature current is then 20A. [12]

0 Answers  

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why transformers are sometimes kept on concrete benches..?

2 Answers  

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wat is d first thing to be seen 2 lay a cable in a particular area??

1 Answers  

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