Answer / raghavendra

these are balanced symmetrical cmponents to represent 3phase
unbalanced system by using perator K.(-0.5+i.866) in order
to reduce the complexity.

Answer / ansar tarala

they are volatage/current components co-existed in three phase unbalanced system. unbalanced 3phase s/m can be easily analysed by considering these components.

Answer / upendra

they are the component currents for EACH OF three
phases

Answer / x man

ITS USED TO REPRESENT DC POWER SYSTEM.

how to calculate the cable size depending on the transformer rating

2 Answers  

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what is the operating principle of contactor(power).along with disection?

3 Answers   NASA, Tech Mahindra,

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wat s the difference between diode and capacitor

20 Answers   TCS,

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dear friends, we are use 130 hp load run with 0.98 power factor ( 38KVAR capacitor connected ). if we need improve the the power factor to 1 (unity). how much kvar capacitor to be add. have any formula? please share with me.

3 Answers   Reliance,

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some times voltage does not built in small generators why ?

2 Answers  

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How can i get my certificate of competency as an electrical supervisor? I have complicated my B.Tech from Uttarakhand technical university this year (2012).

0 Answers   ONGC,

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1) What are your personal strength? 2) What are your personal areas of improvement? 3) What are your expectations from from a particular job? 4) what are your carrier objectives?

0 Answers  

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IN A HT CABLES i.e. 1.9/3/3 kv, what is the meaning of 1.9 and 3.3.

1 Answers  

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why one pin of plug pin is longer than other two? In some mobile chargers one pin is made not conducting .Why?

4 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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10Hp, 3-phase, 415v, 50Hz induction motor. The above motor is to run on Star-Delta connection, so how do i make following hardware selection 1) MCB, 2) Contactor, 3) Wire Gage (Depending on P-P current or Line Current), 4) OLR, Please tell in detail how to do the above, so as to get the ans. of it even if the Hp rating changes.

1 Answers   Engro,

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Why and which type of tertiary winding is used in most of the power transformer?

2 Answers  

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