Answer / sagar bansal

because the power factor of transformer depends on the load connected , which is variable or unknown thatswhy rating of transformer is in KVA or MVA(apparent power).

Answer / subhansab b

We know ratings always depends upon temperature. But temperature always depends on the losses..
We know transformer having only two losses that is core losses and copper losses... we know core losses also known as constant losses because it depends upon voltage and cu losses also known as variable losses because of it depends upon load current...from these two losses we only knows current and voltage.. so we are using VA rating.. For large transformer we we are using MVA ratings

why various test are performed on electrical panels & power cables before commissioning on site & what are these test???

0 Answers   Lavasa,

---

After taking shutdown of 11kv feeder, if you see 5kv by phasing stick in the cable side, is it possible to close earth switch in cable.

0 Answers   KSEB, L&T, Siemens,

---

if the supply voltage increased by N times, the x-section of conductor will be.........

2 Answers   APGenco, Electrical Tech, Ericsson, IES, Thirumalai Chemicals,

---

current transformer balance the power level on both sides. e.g in case of step up, at secondary side voltage rise but current decrease and vice versa in case of step down transformer. but how this power level remains same in case of current transformer and voltage transformer

0 Answers  

---

what are the types of 3-ph. generator protection

2 Answers  

---

Why a Transformer Noise during its running condition ??

11 Answers   NTPC, UPPCL,

---

why not phase to phase fault occure in raining day in hv sub-station?

1 Answers   Getco,

---

. What is Electrical Life & Mechanical Life of Circuit Breaker? 2. What is Electrial Life & Mechanical Life of Magnetic Contactor? 3. What is RCD, RCCB & RCBO? 4. What is the Between defferance of RCD, RCCB & RCBO?

0 Answers  

---

what is the write prosidure of stringing of 8meter pcc pole.

0 Answers  

---

how we done power management?

1 Answers  

---

What is full form of G.O.D in 11kv distribution?

10 Answers   GOD, MSEB, Shyam Indus Power, STL,

---

How to convert KV into MV in a Transformer?. dont say multification of 1000.pls give practical convertion factor.

2 Answers  

---