Why no-load primary current is very small as compared to full load current in transformer (as 1% of full load current?

5 Answers   NTPC,

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what is the difference between neutral and earth

11 Answers  

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Does RCCB do the job of MCB? Lets take 16A RCCB. it trips when residual current exceeds 30mA. does it trip in an over current situation, i.e when current exceeds 16A ??

2 Answers  

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is all the servo motors having brake?please specify which servo motors having brake for stop on position and which are not.

0 Answers  

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WHAT IS A LINE CURRENT AND PHASE CURRENT

3 Answers  

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Why negative feedback is preferred in the control system?

0 Answers  

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what is the function of 1 phase preventer?

3 Answers   ABB, Electrical,

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out of all machines which have highest efficiency and why?

2 Answers  

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We have a 12MW power plant & we inject 5-6MW power to Orissa GRID. For this we have a 33KV/11KV switch yard having 12.5MVA power transformer. Some times we draw power during emergency. It is observed that during Export or Import for load less than 500Kw the power factor is decreasing to 0.3 . This is happening only during export or import. During island condition TG power factor OK.Our capacitor bank is provided with our Power plant auxilliary load. Please suggest how I can we improve our power factor during low load (GRID).

3 Answers  

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HOW TO CALCULATE THE SIZE OF CABLE COPPER & ALUMINIUM

11 Answers   Amman Try, Prestige,

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What is the purpose of earthing Truck ? How does it work for busbar and cables?

1 Answers  

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CFL lamp is what type of load?

6 Answers  

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