how to identify the failer of igbt

0 Answers  

---

Difference Between Isolator and Mcb

13 Answers   VHB Medi Life Sciences,

---

The power consumption, in case of centrifugal loads (like pump, fan, blower etc.), proportional to ____.

2 Answers   BSNL, NTPC,

---

In alternator generally we give DC voltage to field of alternator but field (excitor)produce Ac & converts into DC by rotating rectifier(RR ) then fed to rotor .my question is why we cannot give dc voltage directly to rotor instead of Excitor & RR ?

1 Answers  

---

brief notes on ammeters

0 Answers  

---

---

Why current transformer is earthed??

2 Answers  

---

Cables Construction hi friends, 0.6/1/1.2 kV LV , DC and Control cables are concentric copper conductor what does its means and what is the use of concentric copper conductor,and are this with copper tape shield or copper screening, ? thanks

0 Answers  

---

What will be the size of copper cable (each for 3 phase and 1 neutral) from Service connection Kit-Kat to Panel Board (i.e. to main switch) for a 6 pole 3-phase AC induction motor of 200 H.P. capacity? Amp-255 A, Frequency:- 1450 rpm.

0 Answers  

---

How Can I calculate for the photometrics requirements for a street lighting? Data given are: 45 units of 6 meter light pole with 150 watts metal halide lamp, 220 volts and installed in a promenade area.

0 Answers  

---

why is it that the HT motors & motors having very low kW rating(<1kW) have windings connected in STAR, whereas the motors having in between kW ratings have DELTA connected windings??

5 Answers  

---

what should be distance between phase to phase in 415v system?

1 Answers   NTPC,

---

How two nos. 130 kw D.C motor get synchronise using D.C drive.

0 Answers  

---