How frequency meter measuring frequency? What is the principle of frequency meter?

2 Answers  

---

Can run 11KV(5MW) slip ring motor by appling 415V? if Yes and what are the processors?

2 Answers  

---

how calculate the current faut level

2 Answers   ABB,

---

Transmission lines usually use a.3 phase b.2 phase c. Single phase

1 Answers   K Tech Electrical,

---

What is class ab operation?

0 Answers  

---

Why transformer neutral earthing? What is advantages?

6 Answers  

---

why the NGR (neutral grounding resistor) always OFF during DG off?

0 Answers   Bhel,

---

what is MULTIPLYING FACTOR in substations??

2 Answers  

---

what is purpose of manual bybass in ups

3 Answers  

---

we have require a Motor (1500kW, 6.6kV, 50Hz) which shall operate at 1500rpm during 30min and after it shall run on 500rpm during 15min. The same cycle shall be repetitive during the whole working days. Which method is best and economic to achieve such type of task. VFD, VVFD, Pole changing motor etc.

0 Answers   MTN,

---

two transformers of the same type, using the same grade of iron and conducting material, are designed to work at same flux and current densities, but the linear dimension of one are two times of the other in all respects. The ration of kVA of the two transformer closely equal to................? options: 16, 8, 4, 2

2 Answers   Vizag Steel,

---

1.wat is the negative slip region in the motor?

1 Answers  

---