what is meant by trip circuit supervision & directional or non directional over current ?

1 Answers   ABB,

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what is the working principale of air circuit breaker ?

5 Answers  

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I am final year b.tech student..i applied for gate but i am not interested any of my engineering subjects. i am interested in management wise.. is my option correct after b.tech..

1 Answers  

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A powerplant has 8 gensets operating in grid parallel mode. In one genset sometimes there is pf variation and kvar variation. The plant operates in pf mode. When this variation is onbserved the load is stable, voltage is also stable, freq and genset speed is also stable. How will you check the functioning of pf card. What shall be the ideal output vdc of the pfc, from there it is input to AVR?

1 Answers  

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Define Current Transformer? Working & TYpe's Of C.T.

4 Answers  

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i have one ground earth for my shop but now he showing 11v how ever my machine engineer said that he require less than 3v how can we reduce it, i have put 8 bucket salty water in it

1 Answers  

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Why the wave trap is put in Y phse only in switchyard?why not in other phases?

1 Answers   IAG Automation, REL,

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What happen to the transformer if the OLTC frequently used for lower and raise occured 50times daily?

0 Answers  

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what is the meaning of elecrical.

31 Answers   Infosys,

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two bolbs of 100w and 40w respectively connected in series across a 230v supply.which bolb will glow bright and why?

16 Answers   DRDO, PSPCL, Siemens,

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What type of bulb used in small size cross symbol boder and original flame type(Deepam)?

1 Answers  

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what is difference between speed mode and torque mode in motor?? explain in simple words please.

0 Answers   Toyota,

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