What is true sine wave or pure sine wave inverter?? Is it sine wave or step wave?? If it is step wave, waves with how much step is considered as pure sine wave? Is it possible to produce pure sinewave using power electronics?

0 Answers  

---

How does a system control centre in a utility plant gets the grid frequency of the electrical network (50 Hz or 60 Hz)by the SCADA system?

1 Answers  

---

Can we connect two CT'S to one energymeter?

1 Answers   KSEB,

---

How to calculate the volumetric capacity of a oxygen & Nitrogen gas Cylinder if pressure is 145 kg/cm2 & water capacity of cylinder is 67 liters.

0 Answers   vssc,

---

what are difference between indoor and out door substation

1 Answers  

---

---

what is the synchronous timer ? and it applications.

0 Answers   CPCL,

---

what is the MF if CT ratio is 500/5 and in meter specification is 3.75 REVS/KWH? Thanks and Regards Selvendran.N

1 Answers  

---

wil a dc motor run without a starter??

9 Answers   MRF,

---

why transfromer rating gives in MVA Or KVA? Why not in MW or KW?

6 Answers   GIL, Siemens,

---

What are protections for dty type transformers

0 Answers  

---

Can 4pole (3 phase+neautral )RCCB proper functioning in only 3 phase load (no neautral, no Earth) ?

0 Answers   HCL, Reliance,

---

What is dc current source? Differentiate between ideal and non ideal current sources?

0 Answers  

---