Answer / shrey

Because India was once a british colony.

Answer / krajeshkumar1989

reason
1.due to insulation problem..
2.we also change the 50hz to some other hz but we can change the every equipments and power station which are operating at 50hz that becomes extremely very heavy loss (money) for INDIA to change the system frequency.
3. we can also use the frequency from 40 hz to 65hz..

WHY EARTHING NOT NEEDED IN BATTERY IN SUBSTATION

0 Answers  

---

when we given 3 phase supply to ups system, but out put comes with 3 phase + neutral how it possible? pls explain.

3 Answers   Enzen, Juniper Networks,

---

The transformer which is smallest in size is and how to calculate that? The options are 100 KVA, 50 Hz 100 KVa, 100 Hz 100 KVA, 25 Hz 50KVA, 25 HZ

4 Answers   Ranbaxy, Zee Laboratories,

---

Why PT voltages are measured with respect to ground? What do u mean by voltage or current polarized.

0 Answers   Grasim,

---

Can i get some examples of mechanical devices?

1 Answers  

---

iam preparing for rrb section engineer post in electrical branch.suggest the right textbook for my reference.fromwhere i will get the previous q.papers?

0 Answers   RRB,

---

What are thermo couple cables and where they are used.

2 Answers  

---

i am working in a grid substation,TNEB having 13 yrs experience. Am I eligble to get apply for c licence now?

3 Answers  

---

what is current

5 Answers  

---

What is the significance of integral controller and derivative controller in a pid controller?

0 Answers  

---

Dear friends, i would like to know that what is the exact function of 'exciter winding' & 'aux winding' in Alternator?

0 Answers   NTPC,

---

what irequirment need to be followed when working on live equipment

0 Answers  

---