what are the advantages and disadvantages of speed control of 3 phase induction motor by varying frequency explain with drawing

0 Answers   ABB, Genpect,

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what is load which is indicated in power plant generation panel? in any power plant

1 Answers  

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What is auto changeover and how it works plz write details.

3 Answers  

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What is the deffrence between Siemens S7-300 & S7-400 PLC?

4 Answers   ADC,

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in industrial lighting in each circuit how many lamps can be given? and how much load can be put on each circuit? is there standard for this? please help me with the standard description?

3 Answers  

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What are the specific gravity of fully charged and fully discharged lead-acid battery?

1 Answers   Mukand,

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can u please tell me how VFD(variable frequency) drive is used as a energy saver....?

12 Answers   Essar, Oracle,

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How can we calculate strength of copper hich is supplying electric power to heater and in it hold the heater also and what r all types of forces which is acting on it...

0 Answers   ABB,

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what is high and low cut off voltage of BB and DG at SPS????????

0 Answers  

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WHAT IS THE DIFFERENCE BETWEEN RESISANTANCE AND IMPEDANCE IF IMPEDANCE IS MORE THAN RESISTANCE AT SAME VOLTAGE CAN WE HAVE RELATION DERIEVED BETWEEN THEM

4 Answers  

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Sir, I have applied for the of Assistant.engineer of NPDCL. please send me all AP TRANSCO AND JENCO solved papers of previous exams . I requested send me the papers to my id as soon as possible (rajanikanth_peddi@yahoo.co.in) (This is very urgent) Thank You,

0 Answers   APTransco,

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what is the formula to calculate voltage drop/loss on 66KV Transmission Line?

0 Answers  

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