why electron produce magnetic field when it is in motion?

0 Answers   Power Grid,

---

Why does the rotor rotate?

1 Answers   Machino Polymers, OPTCL,

---

if name plate detals of a motor or any other is missing then how to find it

1 Answers  

---

What is the differance between negative dc voltage and positive dc voltage because some circuit uses -24,-5,-12,- 15,volt dc supply

10 Answers   eLab, Hero Honda, NTPC, Suzlon, Teradyne,

---

how to select the cable size? any formula to calculate cable size?

4 Answers  

---

what are advantage and disadvantage of hvdc transmission . please tell us technic of hvdc technology

2 Answers  

---

two way ckt diagram can be drawn by how many ways? give diagram

0 Answers  

---

What is harmonics. How does it get generated and means to arrest harmonics

8 Answers   Airtel,

---

In transformers Which type of connection is preferred for harmonics to be minimum. primary : secondary star without neutral:open delta star with neutral :open delta star without neutral: delta star with neutral : delta explain why

1 Answers   Genco,

---

what is the capacitance of a single conductor

6 Answers   Bhel,

---

what is the disadvantage of lagging power factor & why ?

2 Answers  

---

Why generally the Rating of Transformers are in additions of 11 i.e. 11 kVA, 22 kVa, 33 kVA, etc........

8 Answers  

---