Please give the formula for converting from 1 tr refrigeration to kw.

2 Answers   Bugema University,

---

Can anybody tell abt concrete encased earthing or grounding?

0 Answers  

---

Why the starting current in Induction Motor is very high as compared to normal rated current ????

6 Answers   Essar,

---

how is working the APFC when varying the load?

1 Answers  

---

I have a small system with two motors that are running on 380 vac, 60 hz. These motors are expensive and I usally get them from Brazil. I am adding another motor to the system, but I want to purchase a 480 vac, 60 hz motor to use. It will be on a VFD that is rated fro 380 thru 480. Is this posible and will I have to use a larger motor and derate it?

0 Answers   US Electrofused Minerals,

---

what are different types of excitation in synchronous generator,what is the difference between them

3 Answers  

---

neutral carrying current more than phase in 3phase supply.i want to know the reason?

2 Answers  

---

why induction motor having low power factor at starting time and high at full load.

6 Answers   BARC, HPB,

---

what is tertiary winding in transformer?What is its purpose?

18 Answers   Bhel,

---

What is the power factor you maintain at ur organization?

43 Answers   Cummins, Exide, Johnson and Johnson, KTC, Microsoft, Powergear, Secure Meters, Suncity Strips, Wheels India,

---

How to put breaker in service / test position.

1 Answers   KSEB, L&T, Siemens,

---

Which of the following statements is incorrect?(a) 1N = 1 kgm/s2(b) 1V = 1 J/C(c) 30mA = 0.03A(d) 1 J = 1N/m

1 Answers  

---