Answer / leon

MCB - Miniature Circuit Breaker. Used to break circuits.(In DB)
MCC - Motor Control Center. Used for motor starting equipment. (ususally in factories)
Isolator. Breaks the whole line including neutral(use at geyser)

Earth Is a very good conductor or very good insulator.? If a good conductor then why current donot flow through small piece f earth and if a good insulator then why we use it as return path in lines.???

6 Answers   L&T,

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Why a tesa lamp is glow between two phase?

0 Answers  

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what is the meaning of 0.5ohm Resistance

0 Answers   Vardhman,

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how we calculate size of exciter(excit. volt and current) for generator?

1 Answers   century,

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how much allowable resistance that can be difference in motor all coils?

0 Answers  

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PLEASE EXPLANE WHAT IS " MOSFET AC CONVERTER"? WHERE AND HOW IT IS USED?

2 Answers  

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What is meant by short-pitched winding?

0 Answers  

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what is active power & reactive power?

0 Answers   Avtech, Jindal,

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what types of fault occurred in transmission line ? which protection function senses the fault?

1 Answers  

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For a 6.6kV Motor it is recommended to do megger test with 500 V d.c and not more than 5kV d.c but the Hi voltage withstand test should be performed by 12kV AC. Why the dc voltage test should be limited but AC voltage withstand test could be with such a high voltage?

0 Answers   Hormozgan Steel,

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1 “earthing” for bonding of equipment and circuits to common plant earth electrode potential, 2 “protective earthing (PE)” when this bonding is required for personal safety provisions 3 “grounding” for interference suppressing bonding of screens, sys-tems with ground level 4. low-impedance earthing ? 5.primary earthing system and secondary earthing system what is that? 6.earthing electrode or mesh net earthing electrode ? very confusing , simple but very informative help required ? i will be very very thankful to you guys.

0 Answers   ABC,

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how to calculate the ct burden?

1 Answers  

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