Answer Posted / lakshmi

in thermal power plants we use condenser for the purpose of
cooling the exhausted steam coming from the turbine.

CALCULATE THE TOTAL VOLTAGE DROP AND SELECT THE CABLE SIZE IN MM-SQARE FOR A PANEL-262KW AT 110 METER FROM THE SOURCE SUPPLY , SUPPLY VOLTAGE 240/415

2716

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do we use neutral grounding for resistive balanced load? if we use what happen?

1841

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for hipot test on 33kV busbar, we will test on 70 kV or 56kV, what is the acceptable leackage current?

1233

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there is an alternator 480 k.w, 400v,50hz, 4-wire running on load having leakage alternator body earthed current 38 A. is it within acceptable limit? if yes then give reference if no then how to bring within specified limit

1981

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2. What are the parameters of EHT sub-station?

2403

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Give some differences between open loop and closed loop control systems.

1223

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r we are using in gas turbine mark (5) frame (6) (made in india Bhel 1997) Ā

1764

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What are unstable systems?

1168

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why various test are performed on electrical panels & power cables before commissioning on site & what are these test???

2047

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please send the IS strandard for electrical to sakthi_murugan86@yahoo.co.in

2312

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please send me previose rrb junior engineer qustion papers

2205

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Which test will be more severe for VCB?

2709

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L.A. (Lightening Arrester) is located at a place from where transmission line enters the transmitting substation. So L.A. (Lightening Arrester) is the first equipments which has to encounter with lightening, high voltage surges and switching surges. It has to absorb energy of lightening, high voltage surges, and switching surges. L.A. (Lightening Arrester) is made up of layers of semiconductors. If these layers can not tolerate energy released by lightening, high voltage surges, and switching surges the L.A. (Lightening Arrester) blasts.

1146

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What is the formula of frequency ?

1515

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11 kv input, 66 kv input advantages

1448

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