Answer / k.prakashchandra

15 MVA for one type of cooling and 20 for a better cooling
method.e.g. ON AN and ON AF or OF AF.Current is too high to
use fuses on LT side

advantage of motor design on higher power factor . normally motors are designed for .8 power factor. what is advantage of designing at .88 power factor

0 Answers  

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How to design pavement quality concrete by using C.R.C.P Method

0 Answers   L&T,

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placing earthing pit in pathway is correct or wrong??. placing earthing wireGI1/18 inside walls is correct or wrong?. explain!!!

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I have 725KVA DG set how to Calculate the Ratio of KWH? Whatb is the Formila

7 Answers   HCL,

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Why the core of a underground cable is spiral in shape instead of straight??

3 Answers   Mecon,

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When testing an earthing connection, we use a 60 or 100 candle bulb with a phase connected direct from supply and the other wire to the new earthing provided.If the bulb glows then the earth is ok.Else earth connection is not Ok. So, why dont we can use all the home appliances taking a single wire from the phase and the return connection to Earth instead of return connection to neutral?

2 Answers  

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need to make a report. Need to choose a 3phase induction motor. Load conditions motor will operate in : Maximum Load: 30 Kw Speed: 2950 rpm Ambient temp: 20 cent Supply voltage: 440V Frequency: 50Hz need to look for the safety factor when choosing the motor, went through catalouge found a few, but dont know how to choose the safety factor allowing an extra load something above 30 KW to avoid any harm.

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i have three phase 25kva transformer but there is two phase line how can i connect to the two phase line?

2 Answers  

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What is an automatic controller?

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What is minimum phase system?

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Transformers with dc supply

4 Answers  

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how many type of of electrical fuse please explan?

9 Answers  

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