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ACB is mainly used at LT sides for the protection of whole distribution system for the desired area supply it trips at the moment of over load or any internal short ckt in the breaker.where as MCCB is advanced version of MCB which is used for particular equipment or some groups of single phase load which trips only due to over load current.

Explain what is CBCT.

1 Answers  

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what happens if a carbon brush is touching the top end of the commutator

2 Answers  

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what is demagnetising effect & crossmagnetising effect and how it is related to electrical system?is there any more effects are available or only these two??

1 Answers   Telco,

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what are the duties of commutator in motor and generator?

6 Answers   L&T,

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what are the effects when the frequency is decreased in any ac machine

1 Answers  

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A 1F capacitor is charged to 100V initially. A 1H inductor is connected accros the capacitor througha a switch. The current in the circiut when the switch is closed is____

0 Answers   Ecil, L&T,

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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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if 2 coil of 1000W connect in series and 200 v is applied across it . then what is the total power of coil when coil have only resistive load .

1 Answers   BSNL,

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how to calculate kA rating of device?

3 Answers   Siemens, Vijai Electricals,

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What does the term power factor shows?

0 Answers  

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Why the cores of large transformers build up of circular cross section?

0 Answers  

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what are the different types of bus bar used at electrical work at shelter

3 Answers   Aster Teleservices, Costco,

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