Answer / gaurav

it is the humming noise in transformer due to harmonics presents in load sid

why the AC or DC motor takes high starting current?

2 Answers  

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dg started in plc mode and load taken later one battery terminal connection will be disconnected by loose connection what will happen for dg and shall we connect battery terminals while dg in load time?

0 Answers  

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Why Power generation in India is at 50Hz while in America its 60Hz so is there any advantage/Disadvantage of this ??

38 Answers   Australia Visa, College School Exams Tests, Fiat, InfoPlus, L&T, NTPC, TCS,

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WHAT IS DIFFERENCE BETWEEN CAPACITOR AND CAPACITANCE?

0 Answers   Manipal Hospital,

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if the power factor is .88 i want to increase the power factor to .99 what number of capacitor is to add?

3 Answers   Amway,

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Can anyone tell me what will happen if AC & DC supply get mixed???

9 Answers  

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1.protection used in transformer ? 2.Why breather called breather ? 3.Working of conservator tank.? 4.Speaker of parliament ?

4 Answers   Power Grid,

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what is the difference between relay and a contactor.

5 Answers   Siemens,

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why d.c. supply is given to the primary side of generator?

4 Answers  

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What is the range of the stator resistance of 3 phase induction motor?

0 Answers  

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What will be the impact on motor performance if a LT motor is rewound with changed motor winding data as given below:- Original winding data: total 04 wires = 02 wires of 17 SWG + 02 wires of 16.5 SWG. Changed Winding data: total 03 wires of 15.5 SWG wire size Motor rating: 160KW, 740RPM, 415V, ID FAN application. Normal Running Current = 95% of FL Current.

0 Answers   NFL,

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Why cannot we insulate HT over head cable to avoid ionization of air around the HT Cable?..By this we can minimise corona loss also..

1 Answers  

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