What are the typical values of characteristic impedences of overhead line and underground cabel? Why there is so much variation?

1 Answers  

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HOW DISTANCE PROTECTION IS DONE IN EHV TRANSMISSION LINES? WHAT IS THE BASIC TECHNIQ OR FUNDA USED BEHIND THIS ? SPECIALLY EXPLAIN?IMPEDANCE METHOD.

2 Answers   ABB,

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how to extend relay operating timing in 24V dc relay card (without using Timer )

0 Answers  

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The inventer is a battery, but if lost current at home u will turn on the fan but the is AC and inventer battery is dc . Then how the fan was rotating. What device Or machine in fan converst the Dc power to Ac power

0 Answers  

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line diagram for mcb , mccb , rccb .

1 Answers  

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AC 230V BULB GIVING DC SUPPLY WHAT HAPPENS?

2 Answers  

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How we can calculate the life of Lead acid battery

0 Answers   ABC,

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WHAT IS METHOD TO DESIGN SIZE OF A 11KV UNDER GROUND CABLE FOR A OUTGOING FEEDER FEEDING 6NOS 250KVA TRANSFORMERS WITH 5KM LENGTH OF FEEDER?

1 Answers  

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What is the difference between emf, voltage drop and potential difference?

4 Answers  

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How to calibrate or test an LT Air Circuit breaker 440 volts, 35 KA, 800 Amps ?

0 Answers   ABB,

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Differnce between Analog & Digital

1 Answers  

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An AC coil to give DC supply whats happen in the coil.what type of problem are create.

2 Answers  

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