what is difference b/w CFL and Ordinary lamps? which one is useful for power saving?

5 Answers  

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What are the drawbacks of HVDC system?

4 Answers  

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Sir, how to calculate the voltage drop and short circuit current of cable. please give me example and formulas.

1 Answers  

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what is relay

8 Answers  

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How to calculate Battery back up time for a 400 AH Battery bank having a load of 20 Amps and charging time required to fully charge this battery bank?

2 Answers  

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I'm looking for a manual set for a Credence ASL-1000 or ASL 3000. Softcopy would be preferred but I'll take what I can get.

2 Answers  

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What is the difference IN MCCB's between thermal magnetic and electronic tripping system ?

0 Answers  

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In oil transformer which oil is used & what should be the insulation resistance & heating capacity.

2 Answers  

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how to calculate energy meter multipling factor by ct & pt raitio

2 Answers  

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Does induction motor start with dc power supply????

4 Answers   Essar,

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What are the special cables required for explosion proof wiring?

2 Answers   IVRCL,

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what is the preventive @ predective maintenance

2 Answers  

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