Wat is da difference b/w neutral earthing and unearthed system?

2 Answers  

---

types of motors suitable for escalators with reason

2 Answers  

---

when an induction motor runs on load.at that time if we reduce the supply voltage the current increases.But when it runs without load,if we reduce the supply voltage the current also reduced.why?.i checked it practically also.

1 Answers   Birla,

---

Why substation battery room is coulered black?

1 Answers  

---

what is the working principle of ceiling fan and table fan?

10 Answers   ABC, Tata Steel Limited,

---

---

what is the effect come when i changed the alternator exciter field winding DC palority(+ve & -ve)which is coming from AVR.

1 Answers   Wartsila,

---

What is the difference between single core 2 wire and single core 3 wire system? Which application we are using this? and for What purpose we are using this?

0 Answers  

---

What is boucholz relay and the significance of it in to the trformer?

0 Answers  

---

if the magnetic lines can pass through a vaccuum area

0 Answers  

---

What is the purpose of reactor in over head transmission line.Can you any explain it.

2 Answers   Dr Reddys, L&T, Reddy Labs,

---

How to select the cable size for the given load ?Pls explain the Formulae

3 Answers  

---

what are the affects of loose connection in electrical circuit.

14 Answers   HP,

---