Answer Posted / sudha

in on-line ups the inverter will be always ON.the power
flows from supply to load through battery and inverter.but
in off-line ups inverter will be ON only when supply is
cutoff.in this power flows directly to the load through a
seperate static switch..
The inverter in on-line should be high efficient and also
change over time is very less in online ups than offline..

how desiel generate sart fail of eb?

2180

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we have an energy meter in a capacitor bank panel, So should we consider it's readings as energy consumption on daily basis. (when capacitor bank doesn't have any energy losses)

2402

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What is current divider rule (cdr)?

1337

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As we know diode work on both negative and positive but converting ac into DC we have to given a/c from negative of diode or positive side.please give me answer.

1673

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How is efficiency of DG set calculated? At many places I found the efficiency to be mentioned in percentage. But at some other places I found kWH/ litres. I want to know how dimensionless percentage value is arrived at?

1911

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Whata are the types of Cables?

2141

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i have done diploma and btech in EE and live in Chandigarh so kindly help me how can i make my competency certificate in my area.

2205

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1sq mm dc powr cable can carry how much dc currnt

2049

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What is phase cross over frequency?

1117

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What types of question are done for diploma students in aptitude test

1638

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Can 4pole (3 phase+neautral )RCCB proper functioning in only 3 phase load (no neautral, no Earth) ?

2136

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what is the purpose of shading ring or shading coil in electrical equipments.

4470

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DG Earth Value?

2296

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What must be the minimum distance maintained between 2 Generators as per International standards?

2128

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which are the criterias needed to select the kind of neutral earthing(solid earthing,resistance earthing,etc.) at various voltage levels in electrical distribution?

1973

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