Answer / murali

lightning is the transfer of accumulated charges from one
cloud either to the ground or the adjacent cloud.

Answer / surya

Discharge of charge from one cloud to another or to the ground

why voltage swells and dips in transmission line?

2 Answers  

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What is AMF Panel????

3 Answers   Emerson,

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We have 800KW motor operating at 6600Volt,50 Hz supply.During 1st startup it tripped on overcurrent trip.It's FLA is 88 Amps.The K factor of Thermal overloaaad was set on .94 initially.then we set at 0.97 and then it started fine.i dont understand why it tripped first?What are the protections which comes in picture during starting ?

6 Answers  

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What is four quadrant metering system.

5 Answers  

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6. A DC AMMETER HAS R=0.1 OHM & CURRENT RANGE IS 0-100 A IF THE RANGE IS TO BE EXTENDED TO 0-500 A THEN METER REQUIRES SHUNT RESISTANCE OF ..........

2 Answers   SSC,

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why using eleven's multiple for substations?

2 Answers  

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A TRANSFORMER 440/400V,DELTA/STAR CONNECTED.THE NEUTRAL CONNECTED WITH GROUND CABLE THAT IS DIRECTLY CONNECTED TO THE PANEL,FROM PANEL IT IS CONNECTED EARTH PIT.IS IT RIGHT? IF IT IS RIGHT LEAKAGE CURRENT AFFECTED.SECONDATY IS PROTECTED WITH EARTH LEAKAGE RELAY.

0 Answers   Jindal,

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What is Energy Audit..?

2 Answers  

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is power factor correction related with vector group of transformer i.e:Dyn11?

1 Answers  

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Write the force balance equation of ideal spring element.

0 Answers  

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Why reverse power relay is used?

12 Answers  

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In secondary transmission i.e., in distribution side, supply for homes are connected through different phases in order to balance the 3 phase load. But in practical we saw nearby house doesn't have power due to single phasing. But other two phases give supply. How it's possible? it doesn't make "single phasing"?

1 Answers  

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