What is harmonics. How does it get generated and means to arrest harmonics

8 Answers   Airtel,

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why only 26v dc is used in aircraft and 115v ac in aircraft.

0 Answers   Jet Airways,

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1)How much current can a 3-1/2 core 100 mm wire carry? 2)What are the special cables required for explosion proof wiring? 3)In case you do not have coal and salt for earthing, how can you achieve good temporary earthing? 4)One horse power single phase motor is more likely to get hot than a one horse power 3 phase motor. Is it true or false, if true why? 5)What are the different types of soft starters for large motors?please explain?

0 Answers   TATA,

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what is the difference between thyristors and capacitors

2 Answers   DRDO, ETE,

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which is the most common harmonics 3rd,5th,7th affect the systegm

4 Answers  

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WHAT IS MODULATION AND NEED FOR MODULATION ?

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 observed 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?

0 Answers  

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What is differnce b/w tie breaker and bus coupler?

1 Answers  

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why the the phase transformer's nuetral has been grounded

2 Answers  

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What are factors to be considered while we selecting the Core Balance Current Transformer for Earth fault protection

0 Answers  

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In a single how much maximum current and watts using

0 Answers  

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Uses of induction motor

6 Answers   NTPC,

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