how induction generator generated the power without excition like syncronous generator.

3 Answers  

---

What is advantages of VSCF wind electrical system?

0 Answers  

---

When we use air circuit breaker, it has O/L protection ,time delay SC protection, Instataneous SC protection & ground fault protection. They all have some setting range. But what is the suitable/allowable setting for the above protection which will be safe for the equipment? For example-O/L protection setting have a range of (0.4,0.45,0.5,0.55,0.6,0.65,0.7,0.8,0.9,1.0)xIn Time delay SC protection have a range of (1.25,1.5,2,3,4,6,8,10,12)xIn Time delay setting is 0.02,0.1,0.2,0.3,0.4 Instataneous setting is fixed to 20xIn Gound fault setting is given 100A,300A,600A,900A,1200A This setting are for 2500A ACB. So what will be the basic allowable setting for the above protection? is there any formulae to calculate this<

0 Answers   Lupin,

---

i had aplied Hindustan Petroleum corporation limited for the post of maintenance technician -Electrical,i want model questions,if anybody have please send it or please advice?

0 Answers  

---

I am having a 1500 KVA transformer whose secondary current is 2086A and my connected load is 1000 KVA, I am having 400 KVAR APFCR for PF improvement what ratio of CT should i install in LT EB Bus to get optimum PF improvement?

0 Answers  

---

1. what is exciting winding, rotor winding, startor winding. and how it works? in ac generator

3 Answers  

---

ful form of gis

2 Answers   ABB,

---

if we going for high voltage usages what are the considering factors, why those factors are effected.... please give me an answer related motor factors like wnidnig, frame, temp etc

1 Answers   ABB,

---

Why the motor was take the starting current is high?

3 Answers  

---

what is rating providing of contactor,relay,fuse unit for motor output power

2 Answers  

---

what is meant by vector group of a transformer? How can it be derived?

0 Answers  

---

Differentiate between real and apparent power?

0 Answers  

---