Answer / k.prakashchandra

FM waves lose energy more than AM ,during propagation.

what is the purpose of checking IR and Megger values in motor windings?

5 Answers  

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an amazing situation was faced when an alive distribution panel with 415 volts and carrying almost 200Amps has become short and this metal cubical showing 220 volts against neutral and earth. to redress any confusion i checked the panel with help of single 200watts test lamp which also glowing with max.intensity b/w neutral & metal body of DB. amazing situation is that i hold the DB firmly more than once with necked foot means without insulated shoes but not received any electrical shock. whereas our all running gen sets neutral points also proper grounded and this short DB was completely earthed , this is beyond my understanding . any body explain how is it possible . our running gen set neutral also grounded firmly

1 Answers  

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what is resticted earth fault protection ? how did it protect & work in power transformer

3 Answers  

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1.WHAT IS A SMART CAPABLE DB ( DISTRIBUTION BOX) ? 2. HOW TO DECIDE THE TYPE OF DB TO BE USED ( RECESSED/ PLUG TYPE/ SMART ETC ETC? 3. WHAT IS MILLENEUM BUS BAR USED IN DB? 4.DIFFERENTIATE MCCB AND MCB.

0 Answers  

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HOW WE CALCULATE CURRENT IF THERE ARE NOT PRESENT ANY AMMETER OR MULTIMMETER??????

0 Answers  

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what is suitable cable for 25 HP motor ? start with VFD ac supply 50 hz

3 Answers   Mac,

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- two pumps must work with them at the same time but if the first pump start the second pump  must delayed for some time to start  also , with motor rated power = 90 KW and rated voltage = 380 V and rated power factor = 0.85 lag please draw the power and control circuit for it and determine all circuit components parameters that you use it

0 Answers  

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how to select cable size?

7 Answers  

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what is the burdon in case of relays?

1 Answers  

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What is the minimum distance between MV busbare (P to P & P to E) as per some standards

1 Answers   ABB, Sejong,

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how can calculated the rating of the 11 KV transformer?

6 Answers   NBCC,

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why and where we use early make & late break contacts in protection?

0 Answers  

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