Why -48V dc power supply using in telecom field?

7 Answers   APC, Cisco,

---

Instead of single phase(220), if we apply Phase to phase (R&Y)supply (eg: for lighting fixture). what will be the power formula?

1 Answers  

---

Why we make earth connection with Transformer Body and What will be the minimum size of copper wire as per code with respect to KVA rating of Transformer?

0 Answers  

---

what is the difference between brush & brushless dc motor explain its operation ?

1 Answers  

---

how to calculate the current carrying capacity of a 25 & 16 kva distribution transformer.

2 Answers  

---

---

How can we find out LT UG cable fault (size,from-4*25mm sqr to 4*300mm sqr)? How mani types UG cable faults?

0 Answers  

---

What is Difference Between Induction Motor & Servo Motor

31 Answers   Jindal, Kirloskar, KTTM, Star Technocrates, Toyota,

---

what kinds of Transformer oil grade is better for power transformer ?

0 Answers   KSRM Steel Plant,

---

Please elaborate th´evenin’s theorem?

0 Answers  

---

Dear all, Can anybody tell me that how to choose CT for a specific load? I have a 200kw induction motor, which ratio CT should be installed? Is there a formula or calculation that determines the CT ratio for a load? Regards.

2 Answers  

---

What is the difference between RMS and average value

5 Answers   CEERI, HPCL,

---

what is the differance beetwen installation and errection ?

1 Answers  

---