Answer Posted / shahbaz shaikh

as we use the transformers for the step up or step down the
electrical quantity and when we use star/delta there is some
relation between line and phase quantity which help in the
connections

what is the step by step formula for calculating bus bar phase and neutral size of a panel board.suppose the incomer of panel board is 100A..???step by step answer please

2963

---

what is the use of current transformer in power transformer secondary side.?its connectyed in WTI

1234

---

If we use 250A MCCB as a incomer in Control panel for a fault level of 50kA for one second ,assuming temperature rise from 85 Deg. to 100 Deg , Then what will be the Aluminium Bus-bar size for 250A MCCB? Explain in detail.

1833

---

The sodium vapor lamp is not glows when it is connected a distance of 5 meters above from gearbox, why ?

3195

---

i am completed my degree(B.E EEE) 2014 anychance to get electrical licence plz help me

1658

---

---

how can we save enegry by using VFD for Resiprocating Air compressor which is having more unloading running hours

1781

---

define reflection method?

1488

---

I WANT BHEL PREVIOUS QUESTION

1824

---

What are the section criteria for cables. Now everywhere XLPE power cable is used or PVC is also used?.

1224

---

can we choose current transformer secondary, to calculate residual flux in a power transformer, so as its saturation is close to the saturation level of power transformer?

881

---

Why in metering Ct for ammeters ct secondary side is grounded for each Ct but not in case of CBCT (Core balance current transformer)..kindly some1 highlights the reason..is it because net flux is zero?

951

---

How grounding is different than earthings?

709

---

What is highest size of HT motor like 11 kv or 33 kv,and how to make it 750 rpm.i think the size will be very big.any idea ? pl. reply..

1497

---

where lt & ht capacitor used

1753

---

any one can explain what is the size of pvc,armoured, various sizes of powr cable dia?

1438

---