Answer / k.mareeswari

Electric train uses only one conductor.It doesn,t need any
separate neutral line because rail itself acts as neutral
path or return path.
And this runs in single phase.

Answer / virendra

Addition to the above Electrical train motor is DC series
moter & runs at 25 kv , it runs on single phase & the
return path will be trhough the track which is again earth
at several places.

Answer / pavan sharma

additional in above we use negative booster to control
effect of voltage drop on rail track

Where -48 volt DC use & why?????????

10 Answers   Ericsson, INDUS, Indus Towers, Telecom,

---

Why negative feedback is preferred in the control system?

0 Answers  

---

How can I calculate the trnaformer effciency at different loading condition?

2 Answers  

---

one cable insulation resistance 200 mega ohm. how find 250 meter cable resistance.

2 Answers   NTPC,

---

why we avoid parallel operation of diesl generator?

4 Answers  

---

---

IF 8255 CONTROL WORD IS 94H,Tell the chip port work mode ?

0 Answers  

---

i have a 1500kVA transformer what is the kWH meter i need to use?

0 Answers   HP, L&T, Mohammed Harasani Architects,

---

hi this is hema can anyone mail me previous years questions for the APPSC-A.E.E (in electrical stream.) ......thank u.

0 Answers  

---

how we explain parallel paths armature winding?

0 Answers  

---

What is maximum rating of transformer ?

2 Answers  

---

why are the transmission lines operated at 220 kv nly... nt les dan dat...

3 Answers  

---

What are types of encoders?

19 Answers   ITC Infotech, UFO, Wipro,

---