explain Uninterrupted power supply detailed electronical operation with circuit diagram

1 Answers   Emerson,

---

Apparent power is expressed as V * I(Conjugate). Why not in V * I ?

0 Answers  

---

1.what is difference in maintain Hz again Hz in USA ? 2.how to calculate the battery AH? 3.why are yearly maintained in transformer how many tests in required?

0 Answers   Areva, Google,

---

Why OLTC(On Load Tap Changing)transformer is not recomended for improving voltage instability?

2 Answers  

---

how can u determine size of the conductor by knowing the voltage level

2 Answers  

---

How much water ( Kilo Liters) a submercible pump of 35 HP can lift from Borewell of 6" and 900 feet dip.

2 Answers  

---

what is cogging? how it can be controlled?

1 Answers   HCL,

---

what is the difference between 3 phase 3wire &3phase 4 wire meter?what is the advantage of 3p3w over 3p4w?

1 Answers   L&T, MahaDiscom,

---

what is the difference between LT & HT Motors

11 Answers   L&T,

---

What is the difference between magnetic loading and electric loading of a machine?

2 Answers  

---

when a cunductor is being disconnected from live cct, still it showing charged, if its checked by line tester?

8 Answers   GEB,

---

why are use star delta startor.

4 Answers  

---