how copper and aluminium wires or cables are choose for current rating? please provide copper and aluminium wire selection chart for different current rating ?

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What is the SCR system in drilling rig.

2 Answers   Weatherford,

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Can any one give an explanation about rating factors of cable? if we are laying the cable on the air with an temp 15 degree then rating factors will be 1.15 and if we are laying the cable on the air an temp 60 degree then rating factor will be 0.76 please describe it and what is the difference between rating factor and derating factor?

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what is the difference between the voltage of 5 volts capacitor and and 5volts battery?

0 Answers  

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AVR

2 Answers  

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how does a current carrying conductor posess a magnetic field. what is the reason for the production of electro magnetic field around the conductor

2 Answers   Vizag Steel,

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How to check the specific gravity of the two 12 V batteries connected in series to a 24 V UPS and inverter ? will we have to disconnect all the connections and turn off the UPS and inverter or not ? will we have to check specific gravities in each cell of the two batteries ? what is the name of the instrument that is used to check the specific gravity and whats the procedure to check the specific gravity with it ? thanks

2 Answers  

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A CT is marked as 10VA 0.2FS in its name plate. What is it? Where it is used?

1 Answers  

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could an induction motor be used for regenerative braking in electric-train control? in this type of application would some scheme have to be devised to obtain low synchronous speeds while braking? would induction-motor drive, therefore, be suitable for passenger service?

0 Answers  

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Why semi-conducting insulation is used in XLPE cables?

1 Answers  

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how to identify the failer of igbt

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How to calculate multiplying factor of dc energy meter

0 Answers  

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