Difference between ups

32 Answers   Emerson, Tata Power,

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why in motors dc extitaedtion is prefer

1 Answers  

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what is the principle of servo motor

2 Answers  

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why we use star connection in HT motor? and delta connection in LT motor

2 Answers   npcc,

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How is efficiency of DG set calculated? At many places I found the efficiency to be mentioned in percentage. But at some other places I found kWH/ litres. I want to know how dimensionless percentage value is arrived at?

0 Answers   ADS Spirits,

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In a 3 phase 4-wire system. For a 3.5 core cable if all loads are single phase and balanced, what will be neutral current? will it be sum of all phase currents? Or it will be zero? And if loads are unbalanced what will be neutral current?

0 Answers  

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now-a-days which devices are using for converter

7 Answers  

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why C.T secondary are rated 5A generally?

13 Answers   ABC, Bhel,

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better choice of area of interest to post in our resume?

2 Answers   Cognizant,

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sir please send me techinical questions for junior engineer posting in bangalore railway i am diploma holder

0 Answers   RRB,

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Is there a chance for a motor speed to become negative..?? What is the reason for such a phenomenon.? In that case does the motor works as a generator..???

1 Answers  

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Why does not AC excitation use in rotor of AC Generator instead of DC excitation?

2 Answers   A2Z Group,

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