Answer Posted / modi.elect2002

we must know the load which is connected to the ups output.
and the current..
cz each and every battery have different AH capacity.

Instrument connected to a single phase supply

1645

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what is the effect of earth on capacitance in 3-phase and 1- phase transmission line?

2307

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What is the difference between UPS & inverter ? which UPS is better and whos got the edge ? what is the difference between & inverter ? which UPS is better and whos got the edge 12 V , 24 V , 36 V etc what are the advantages of 12 V, 24 V , 36 V etc and what are the disadvantages of 12 V, 24 V, 36 V etc thanks

1850

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why we not used 11kva as a direct our electrnics component.

2751

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How can we measure earthing resistance test (Earth meggar) of Transformer neutral pit while in live condition?.

2066

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how to determine ct ratio in ht vcb?

1772

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how we sesign the transformer give some specifion regarding design of transformers

1862

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Why reactive power is needed in a power system? How is it being absorbed or delivered by alternators? For reactive power control we are changing excitation but reactive power absorbing or delivering related to stator. How these two are interlinked? i want a detailed explanation with necessary expressions and figures?

1848

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I have 2 KW electric water heater.I am gonna use it in controlling water temp.so I needed to increase or decrease the heating capacity.is there any electrical-electronic circuit for varying the resistance & so current?

3188

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why -48 volts dc used in telecommucation

2540

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What is resonant frequency?

1211

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in an electronic tri vector meter when the current and voltage sequence changes ? what is the effect of phase sequence on recording of meter

2159

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Is electro plating what type of load whether resistive, inductive or capacitive loads

3263

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what is mean by restructuring power system?

2006

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Define maximum demand?

1007

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