how to understand the controling circuits example star- delta-starter controling daigram please let me know

3 Answers   GMR,

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is it value of power factor is more than unit. whats effects in the source supply

0 Answers  

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How much load can give on 1600 kva transformer 11kv/440

5 Answers  

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A 60w bulb & a room heater are connected in series.if 60 w bulb is replaced by 100w then what will be the effect on heater out & why?

6 Answers  

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what is the formular for the calculation of CT'S when installed as part of a electrical installation so the correct meter is used

2 Answers  

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Due to ferranti effect which power increases at the receiving end?active power or reactive power?

5 Answers  

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for 100 HP Induction motor service factor is 1.2(SF) we placed a VFD at the motor side load is balance with 0.3 Amp's Phase to Phase but at incoming of VFD load is un-balance with 10 to 20 Amp's what will be cause of load un balance

0 Answers  

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low frequency protection why recomend?

0 Answers  

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How does an oscillator differ from an amplifier?

0 Answers  

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Brief working principle of fluorcent tubelight,function of starter & choke.

3 Answers   Havells,

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A 30KW motor running at 1450 rpm draws 56A, how would you determine if this is correct or not?

3 Answers  

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In step down transformer (415/200V),mistakenly secondary side is connected to 415V for some hours, what would be result of this condition?

19 Answers   Essar, GAIL, Vizag Steel,

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