Answer Posted / rokas

75CM 61 CM

describe the fully control circuit diagram of ac drives

1846

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what is v/f control in VFD?

1549

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while doing high potential for 11KV 3 core cable how much leakage current will obtain?, what will be acceptance value?

2880

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What are the advantages and disadvantages of the dc motors?

1133

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What is the gross weight to copper ratio in slip ring induction motor of 4000 HP,6.6 kv, 372amp, 992 rpm GE motor.

2356

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How we can calculate the life of Lead acid battery

1781

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1.WHAT IS A SMART CAPABLE DB ( DISTRIBUTION BOX) ? 2. HOW TO DECIDE THE TYPE OF DB TO BE USED ( RECESSED/ PLUG TYPE/ SMART ETC ETC? 3. WHAT IS MILLENEUM BUS BAR USED IN DB? 4.DIFFERENTIATE MCCB AND MCB.

1840

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mccb service sittings be done?

1953

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Define the three phase formula fuse.

1862

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What is meant by short-pitched winding?

1205

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why fractional pitch winding generally used in alternators?

2947

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We have 5 Distribution sections with variable loads&We have 3 Gensets(500kva,380kva&250kva) our total load is between 400kva to 600kva. so how could we connect 3gensets.

1857

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Hi Suppose we have a wye/wye transformer which is grounded at both sides,in this situation, do we have ay ground transformer? in other words, ground transformer can do any thing more (while we have nuetral wire in both sides)? As the last question, what about 3rd harmonic? we have two choices: first using wye/delta transformer + ground transformer and second using wye/wye earthed connection.in the former choice, we dont have 3rd harmoonic at the secondary side but what about Yn/yn conection? do we suffer from 3rd harmonic in the Yn/yn connection?

1965

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What is Plank's Law?

1152

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What difference between ref protection and differential protection ?

1843

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