The metal-enclosed switchgear and controlgear is subdivided into three types: 1. metal-clad switchgear and controlgear; 2. compartmented switchgear and controlgear 3. cubicle switchgear and controlgear. What is the main differnence between them. State some example.

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why do motors burn out? I understand why adding parallel loads to a power source means more current moves through the circuit, and can destroy circuit elements by overheating. What about when you have a vaccuum cleaner intake flush against a floor, a room fan sitting directly against a wall, or a power drill trying to drill through something too hard?

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In separetly excited m/c,we excite the field by a dc source,what not with ac source?

2 Answers  

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What is a signal flow graph?

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how solar power plant energy meter multiplication factor

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as ac supply is given 2 the transformer why it doesnot depends upon powerfactor????

2 Answers  

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1.what is electricity 2.what is electronice 3.how many modules 4.five electrical component with symbol 5.five electronice componene with symbol 6.how convert 220v.A/C to 24v/DC 7.220V.WAIRING DIAGRAM OF AMMETER/VOLTMETER/OHMMETEER

1 Answers   Hatsun,

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Why do we give DC excitation to AC Synchronous motor??

9 Answers   Lance, MBM, Polycab,

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what is creepage distance in sub-station?

3 Answers   ABB,

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what is the conductor size in 33/11 kv line

5 Answers   Al-Thamer,

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what do you mean by mf of energy meter & its formula?

4 Answers  

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what is meant by auto transformer?

4 Answers   Suzlon,

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