why airtel use + 24 volts and other operators use -48 volt

0 Answers   ABC, Airtel, INDUS, Reliance,

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Need of oxygen dosing in super critical powerplants?

5 Answers  

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Why attempration spray is used after hp heater?

5 Answers   CMJ Breweries Private Ltd., Thermax,

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under which situation or why restricted earth fault protection operates in out side its zone that is external fault

2 Answers  

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63.5 ohm NGR is connected with our gas engine genrator running at 500 rpm, 50 hz and synched with WAPDA at 6.3 KV bus voltages, 2500A and 25KA(1 sec). can some one give me proper calculations how it comes 63.5ohm?????

2 Answers   UET,

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why drum level is increased when one of the running coal elevations are suddenly tripped?

6 Answers   APGenco, Vedanta,

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why prds line tapping taken from ms line as Pri SH O/L temp & pressure is sufficient to full fill our requirement of PRDS..

3 Answers   GIPCL, OEGI,

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What is reheater protection based on what mft will be act on RH protection

2 Answers  

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I want to build 100 megawatt hydel dam. What does mean, 100 MW per hour? then how many electric bulb of 100 Watts the dam would lit?

1 Answers  

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whats plant?

1 Answers   Bhavini,

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why not maintain Ph 7.0 in Boiler because 7 Ph is not acidic and not basic.

4 Answers   Atlas Power,

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what is IR in differential test on motor?

2 Answers   Adani, Adani Power,

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