why threre are two parallel lines in transformer's symbol?

11 Answers   NTPC,

---

different between circuit breaker & switchgear & relays

6 Answers   EFS,

---

What will happen if DC supply is given on the primary of a transformer?

6 Answers  

---

Explain types soft starters?

7 Answers   Siemens, TCS,

---

wich type of cable is selected for wiring of 20hp motor?

5 Answers   Alchemist,

---

---

why we use to transmit the power in three phases intead of single phase ?

5 Answers  

---

What will be the impact on motor performance if a LT motor is rewound with changed motor winding data as given below:- Original winding data: total 04 wires = 02 wires of 17 SWG + 02 wires of 16.5 SWG. Changed Winding data: total 03 wires of 15.5 SWG wire size Motor rating: 160KW, 740RPM, 415V, ID FAN application. Normal Running Current = 95% of FL Current.

0 Answers   NFL,

---

why use -48 volt DC power in telecom?

3 Answers  

---

What is the function of PMG in DG sets & how it works??????????

2 Answers  

---

Why we have short circuit the secondary of the transformer

1 Answers  

---

can i use 10 mfd + 6 mfd instead of 15 mfd capacitor in single phase motor as running capacitor

3 Answers  

---

HOW MANY EARTHINGS REQUIRED FOR GENERATER

10 Answers   Juniper Networks,

---