What is the Diff. btw Fire Alarm System & VESDA System??????

1 Answers   Emerson,

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What is the equivalent circuit of a transformer and its vector diagram?

0 Answers   Bhel, Madhucon,

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what is the internal fuction of a ceiling fan?

2 Answers  

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how to select the automotive wire size by mathematical calculation. for xenon headlamp with ballast. the ballast given data voltage 10-17v,current permenant 6amp, run up phase is 15amp, peak at swicth on max 400micro sec is 40amp.the sum of cable resistance is 150mohm.please provide referenc document if any for relating the peak at switch on current,time & wire wire size

0 Answers   Tyco,

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difference b/w current and voltage relay?

1 Answers  

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If u have Powergrid model question papers Please send to below mail ID rajutheprince@gmail.com

0 Answers  

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Can any body tell me what is use of END OF LINE RESISTOR in fire alaram circuit?

2 Answers  

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what are factors to be consider to design a HT & LT motor?

1 Answers  

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DG cranking voltage?

0 Answers  

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what is the exact direction of current? as we know current travels from higher potential to lower potential,so if we take battery +ve to -ve implies current direction is from positive terminal to negative terminal.,whereas electrons flow from negative to positive as they are attracted by positive ions.current will be the plow of charge but not flow of positive ions.please clarify my doubt friends.

2 Answers  

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why can tv operate at low voltage??

2 Answers  

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What is mechanical interlock?Explain the uses?

2 Answers   HSL,

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