what is the formula for backup time of online ups?

1 Answers  

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why total tape position are odd in number in Power transformer ?

1 Answers  

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what is excitation/

0 Answers   ABB, Tata Steel Limited,

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when we connect the capacitor banks in series with the circuit?

3 Answers   Cipla,

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Explain the construction of the conservator, operation and purpose, and draw the diagram of the conservator.

0 Answers   Siemens,

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redundant connection in contactor?

0 Answers   Emerson,

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what is model question rrb junior engineer electrical gr.II

0 Answers  

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why do select 11000v rubber mat even we use only 415Volts

1 Answers   Saint Gobain, Tata Steel Limited,

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why we +ve load distribution in 24v and -ve load distribution in 48volt in the telecom sector.?

2 Answers  

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What is the difference between rated and maximum speed of 3phase induction motor.....? Can the motor speed exceeds the rated speed..?

1 Answers  

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calculation of knee point voltage of current transformer?

2 Answers   TATA,

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how calculated Transformer losses.

0 Answers  

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