Answer / v.srinivas

I=P/1.732 X 415 X EFF X PF=49.5(LINE CURRENT)
28.57 AMPS (PHASE CURRENT)
Phase voltage in star connection; 718.78

as per IE stranded what is max voltage between neutral to earth. 100 kva transformer neutral solid earth. min and max values i need to ans for RTI question

2 Answers  

---

Whats the principle of lightning? How protection against lightning is achieved? Types of protection? How to select the height of lightning spike? as per the area.

4 Answers   HAL,

---

I had attend the ITC (Indian Tobacco Company) interview (For Electrical maintanance).There they was conducted me a written test.And I was passed in that.Now They are going to conduct a Practical Interview in next round.Please help me what practical test they will ask............?

0 Answers   ITC Infotech,

---

What is the pratically meaning of neagative going ac current.

1 Answers  

---

What is meant by term Back to back in HVDC transmission?

1 Answers   SSC,

---

How isolater function when installed inelectrical 440V wiring

0 Answers  

---

why wire sizes are 3/29 or 7/29 and why not wire sizes are 2/29 or 6/29?

0 Answers   OGDCL,

---

what happen "when Dyn11 is parallel operation with Dyn1"?

9 Answers  

---

How to calculate voltage drop in copper and aluminium cable? I have laid 240Sq.mm Aluminium cable for the length of 600 Mtrs in 1 Mtrs underground. Normal load is 150A. Transformer is 630KVA, 6.KV/433V. But, I am getting only 395 Volts when load. How to calculate voltage drop and what is the permissible voltge drop for this circuit?

1 Answers  

---

Why two nos. un-tensioned wires are placed inside the PSC poles used by powergrid in RGGVY works.

2 Answers   Bhel, Power Grid,

---

In a 3 phase 4-wire system. For a 3.5 core cable if all loads are single phase and balanced, what will be neutral current? will it be sum of all phase currents? Or it will be zero? And if loads are unbalanced what will be neutral current?

0 Answers  

---

1 Amp = kva ? 1 Amp =KW ?

3 Answers   Marriott,

---