what is the prinsiple of dc motor and construction and working ,application of dc motor.

0 Answers  

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what is apparent poewr, reactive power, & active power?

0 Answers  

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This is about the recent problem that we have faced in our project site. We have 6/7.5 MVA. 66/11kV three phase star - star power transformer. The neutral was solidly connected to the earthing mat. But because of high resistance of earthing mat (130 ohm on LV and 180 ohm on HV), one day LV side neutral earthing conductor melted and we had a huge damage. Can any one plz tell me what might happen when we connect power transformer neutral to the earthing mat which has high resistance (>100 ohm ) ?????

2 Answers  

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What are the advantages of star-delta starter with induction motor?

7 Answers   Merchant Navy, Naval Academy, Samundra Institute of Maritime Studies, YMCA,

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what is different the DOL Starter and Star Delta STARTER

12 Answers   Schwing Stetter,

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What is GD2(kg-m2) for Sq. cage ind. motor?

2 Answers   ABC, Essar, MMM,

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Why field resistance is greater than the armature resistance in dc mechine

1 Answers   Cape Peninsula University of Technology,

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How u can give the overload setting to any motor protection relay for a HT motors with formula and Example?

0 Answers   OCL,

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What is the meaning of Insulation H for transformers????

0 Answers  

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what is relation between vector group of transformer and its load hormonics?

1 Answers   Sanmar,

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Which Programming software are use for Allen bradley PLC's?

16 Answers   ADC,

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principle of power export and import in captive power plant.Is it depends upon voltage,current or frequency?Plz explain briefly.

1 Answers  

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