1-What is the difference between absorption factor and polarization factor in insulation resistance test in transformers? and why we inject until ten minutes to get polarization factor?

1 Answers  

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Hi friends, i m electrical engineer i want a cdr for migration purpose so anybody have information about this then send me on jayesh_ee88@yahoo.com.please try to me

0 Answers  

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what is the resultant phase shift in a 3 phase power system including neutral if on or more phases gets grounded or short circuited. kindly explain in detail for the reasons...

1 Answers   Enercon,

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In electric motors, according to the no. of compartments, The no. of input's (pantagraph collector's) were increased, why?

1 Answers  

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Natural frequency in the control system represents nature of a. Transient response b. Oscillations c. Overshoot d. Speed of responce

1 Answers  

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What is value of earth resistance required for substation and equipment earthing and what are the reference guidelines

0 Answers   Glenmark,

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how can we determine size of a cable by knowing the kw or current rating of a load?how can we calculate the resistance box of a slip ring motor?

0 Answers   TK Group,

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if receiving voltage is higher than sending ones what will be the effect of receiver

4 Answers  

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Is it posible to instal one more SMDB from the existing SMDB and is it practical.

0 Answers   CGI,

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Electrical breakdown strength of an insulating material depends on............?why because?

2 Answers  

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what is the reasons for blowing fuse

1 Answers  

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Active power= VI COS FI But incase of leading power factor ( more than unity), may we use other formula ? because the cos fi (value of cos thita) should not be grater than one.

2 Answers  

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