Answer Posted / robeesh

Earth Resistance test to be conducted on summer conditions to achieve the correct value by using an earth resistance tester (From Megger/ Sanwa/ Fluke). The value should be less than 1 Ohm for electrical earth pits and less than 10 Ohm for Lightning protection System. Procedure for testing should be as per the equipment.

what should be the ideal gauge of wire (In sq mm) for different loads in Ampere?

1441

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Can i replace Earth leakage relay to the faulty Earth Faulty Relay

1518

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How will change the frequency in distribution side?

1792

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why genarator genarating voltage 11 KV?

1787

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We have studied about many techniques for finding the stability of system, ROOT LOCUS, ROUTH, BODE PLOT, POLER PLOT etc. In these which is used where. what are the difference among them... PLZ tell me.......

2178

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A 1F capacitor is charged to 100V initially. A 1H inductor is connected accros the capacitor througha a switch. The current in the circiut when the switch is closed is____

2326

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why the arc welding machines require parallel earthing systems? ie why each machines are connected to earth pit by separate wires during earthing? wats it adavantages?

2205

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What are the parts in a inverter?

2092

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Will any motor burn if voltage provided is lesser than the rated voltage???? If yes, then how is speed control possible with voltage control

2157

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substation+ plc system

2080

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Define closed loop control system.

1085

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How to choose the vector group for the step up and step down transformers??? Tell me the which vector group is suitable for step up and step down transformers and whats the reason to choose and whats the benefits???

2280

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what is the effect of un-synchronized power.

2059

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What is a signal flow graph?

1078

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which metal is use in shunt

6588

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