Answer Posted / vishnu dayal

MCB is miniature circuit breaker which is thermal oprated
and use for short circuit protection in small current
rating circuit and single phase use .

MCCB moulded case circuit breaker and is
thermal operated for over load current and magnetic
operation for instant trip in short circuit condition.under
voltage and under frequency may be inbuilt. Normally it is
used where normal current is more than 100A.and use for three phase use..

what are the differant std sizes of cable trenches?

2063

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Starting times for soft starter & power factor is thier any standard or datas available in manufactures list. Kindly suggest.

1941

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State angle criterion.

1123

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What is the difference between single core 2 wire and single core 3 wire system? Which application we are using this? and for What purpose we are using this?

2361

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what is proper capacitor placement? How to evaluate capacitor size?

2130

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how to find the multiplication factor for digital energy meter and analog energy meter

2212

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HOW TO TEST A LIGHTENING ARREST ER ?

2200

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what is the voltage regulation for unity and zero power factor?

2318

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Can any one provide the inspection procedure of MIMIC for VFD panel? Details: If someone wants to have a mimic in the VFD panel what are inputs considered for the mimic(like on,off,trip) whether we are able to add speed variation in the mimic(if so how can we get) and what are the parameters to be checked in the MIMIC during inspection?

2204

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Define conversion efficiency of a power amplifier. What is its value for class c power amplifier?

1369

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why on delay timer used for fully automatic star delta starter?

1701

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how meger function

2893

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is it possible to test of bus bar in high rise building without completed full floor ?

1702

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what is the control circuit for operating the clean room air shower

2279

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i want wipro vlsi placement pattern please send me

1778

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