what is negative d.c. voltage, why this voltage is used in base transciever station.

0 Answers   Vintage Air,

---

ACCORDING TO IEC WHAT SHOULD BE THE MINIMUM HEIGHT OF G.I. STRUCTURE OF CT, PT, ISOLATOR, LA?

0 Answers  

---

what methods are used to improve power factor?

3 Answers  

---

what is the radio of kva & kvar or why calculated kva & kvar

3 Answers  

---

why we use ac supply as 415 volts instead of 415 v why we cant apply 230 v for dc

0 Answers  

---

---

Why usually in all electrical equipment taking more current in Y pahse like pumps,compressor,or any other applications

1 Answers   Chemplast,

---

When testing an earthing connection, we use a 60 or 100 candle bulb with a phase connected direct from supply and the other wire to the new earthing provided.If the bulb glows then the earth is ok.Else earth connection is not Ok. So, why dont we can use all the home appliances taking a single wire from the phase and the return connection to Earth instead of return connection to neutral?

2 Answers  

---

Draw a SLD for main panel for school having connected load of 1200kw and emergency generator 200kw.also show the increase of additional load of chiller 225kw in the lv panel indicating meter postion size of transformer ,cables and capacitor bank.

0 Answers  

---

what is the harmonics.

3 Answers   DLF,

---

wat system call?

0 Answers  

---

sir what is the purpose of SF6 in HT breaker and what is the pressure should be maintain in the breaker?

2 Answers   Kirloskar,

---

What is the need for a controller?

0 Answers  

---