Answer / k.prakashchandra

Isc=I(100/%x)=941.18A

Answer / arun.r

sec short = (appiled voltage*sec. current)/(%z*110)
ckt current

we done magnetic balance test for 33KV /440V transformer in our company , but the ratio out is confusing us Voltage applied in RY = 440 , at RB = 320 and YB = 60 RY 440 = ( RB + YB ) 380 only Please let me know what type of problem is it.

2 Answers  

---

Why computer humming sound occurred in ht transmission line?

0 Answers  

---

WHY CBCT USE ONLY IN Y PHASE NOT OTHER PHASES

0 Answers  

---

what is the difference between concentrated winding and Distributed winding in motor?

7 Answers   BSL, Infosys, TCS,

---

what is the difference b/w conductor and semicoductor

1 Answers  

---

I have an existing old MCCB. ABB Model SACE, the rating are: Ue = 660 volts, Iu =1250 Amps, 3 poles, Ith (max) =800 amps at 45 deg C. I need a circuit breaker for my 3 phase motors, 380 volts 60 hz. the supplier required the minimum ampacity of the breaker to be 911 amps. can i use this breaker with rating of Iu =1250 amps but Ith = 800amps maximum?

0 Answers   Siemens,

---

what is the term of desruptive voltage

5 Answers   Bhel, Energy Infratech,

---

why we still use sinusoidal waveforms for transmission and utilisation (we know generation is sinusoidal), instead of other ac waveforms such as triangle, sawtooth, square etc.,? is there any mathematical derivations to prove sinusoidal is efficient than others?

1 Answers  

---

Shunt reactor is used in EHV Transmission line for..............?

2 Answers   NTPC,

---

What is meant by harmonic distortion?

0 Answers  

---

why supervision relay is used in incoming feeders?

1 Answers  

---

how to calaculate the amps in transformer ?

2 Answers  

---