what is the working principle of dc motor & its application ?

3 Answers  

---

What is the difference between PLC & DCS?

1 Answers   Power Plant,

---

how bucchos relay works in a transformer

8 Answers   Indeco,

---

how we can explain arc heatng?

0 Answers  

---

In 2500kva transformer how much is the withstand High voltage power frequency between primary to secondary and earth? And secondary to primary and earth?

1 Answers   Honeywell,

---

---

where the protection CT in neutral of transformer be located, before bifurcation or after bifurcation and why.

2 Answers  

---

why is the core of the underground cable is spiral in shape instead of straight?

8 Answers   Mecon,

---

what is the difference between megger and earth tester?

28 Answers   Ashok Leyland, IOCL, RRL,

---

If a current -8+6sin6t is flowing three ammeter, one is a centre zero PMMC meter, one is true rms meter and one is moving iron meter. What are the reading of these three meter respectively?

0 Answers   National Insurance Company Limited,

---

What happend if we connect star point to ground of a star connected motor? And what will be effect on system and effeciency of motor?

1 Answers  

---

what is x'mer ,isolation x'mer & yltra-isolation x'mer?????

0 Answers  

---

Whether power factor should be high or low? Why?

0 Answers  

---