wat is d diffr btw shunt coil and trip coil in VCB?

0 Answers   NTPC,

---

how brushless dc motor is operating ?

4 Answers  

---

how to increase the power factor in machines

5 Answers  

---

Is it possible to measure the voltage of a battery from a single terminal?

0 Answers  

---

how many frequent start/stop operation possible in case of HT MOTORS.

5 Answers   DVC, Steel Plant,

---

---

what is power factor? whether it should be high or low? why?

11 Answers  

---

What are the maximum and minimum ratings of MCB,MCCB,ACB,OCB,VCB and SF6 breakers?

2 Answers   ABB, SK E&C, Sodexo,

---

can we use existing 6300V alternator for generating 6600V by increasing excitation,what are advantages & disadvantages to alternator & motors of 6600V.

1 Answers   GMR,

---

What will be the capcity of 3 phase DG set require for 25 KVA single phase lighting load?

7 Answers   Supernova,

---

How loading get increased in generator not the speed, while we increasing steam to turbine.

2 Answers  

---

What is meant by IP55 motor.Where it is used?

2 Answers   Zuari,

---

how can I check HT cable ?

2 Answers  

---