What is meant by soft starter used in motors?

4 Answers  

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what are different type of triping equipmen like MCB,MCCB and their differences

3 Answers   ABB, Schneider, UPPCL,

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why transformer are not used in D.C SUPPLY

5 Answers  

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how to calculate the neautral earthing conductor size for a 500kva dg set.

2 Answers  

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what is the problem of generator over voltage.?except automatic voltage regulator card

2 Answers   Siemens,

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how one can know the charging time, discharging time of a 12 VDC battery ? If i have a battery of 12 VDC , 4.0 AH , how long will it take to charge from a charger (power supply) of input 220 V , Output 15 V and output current of 3000 mA and how long will it take to discharge whether using or not ? How much backup will it give ?

1 Answers   ONGC,

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what is CT class? depending upon which it is classified?

3 Answers   Siemens,

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why open circuit test is conducted on hv side and short circuit test is conducted on lv side of a transformer ?what is the reason for it ?

3 Answers   HCL, NTPC,

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what is earth resistance? how to measured? and give values at power station and mcc area?

0 Answers   Essar,

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why transformer cannot rotate though the princplebehind induction motor is similar to a transformer?

2 Answers   GE,

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How to connect a ELCB with contactor and relay ?

0 Answers  

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WHAT IS IEC? & WHAT IS BENEFIT TO PRODUCT FROM IEC?

0 Answers   BMC,

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