Answer / nawab parihar

We know that Capacitance reactance Xc=1/2πfc now d.c. frequency is zero;f=0 so Xc=1/2π×0×c=1/0=infinite this condition circuit behave open circuit so capacitor block dc current

Answer / rahul

Xc=1/2πfc dc f=0 Xc=infinite this condition o/p ckted

in my industry we are using 3 step up transformers for induction heaters..i.e 415/580v and other are 11/440v.in power consumption does a step trnsformer makes any difference compared to step up?? plz explain

0 Answers  

---

What do you mean by eddy current loss?

1 Answers  

---

how much current will take for 1kw power. and what is the eqoutiion which is connecting with kw and A.

2 Answers  

---

I do wonder why current is present in neutral wire?i check single phase lead current feeding air conditioner...on its phase its current was 10A while same was 10A in neutral...as we know in neutral voltage is zero so if voltage is zero then how current appears on amp meter? my second observation is (just imagination)when I touch phase wire it give me shock but when i touch neutral nothing happens although as above its carrying current(amps) third but with same logic...as in simple Alternate current sine curve there is + and there is negative peak.means every time phase changing so how come every time same phase and same neutral stand (pardon for english mistakes)

1 Answers  

---

when running 2 nos 450kva dg sets in parallel operation ,in one Dg set power factor and Kvar going to lagging and ampere suddenly going high,please give me suggestion to correct the same.

2 Answers  

---

---

Whats parameters which we keep in mind when grounded any electrical machine.

1 Answers   Essar,

---

What is Isolation Current transformer and what purpose to use it in REF relay ?

1 Answers  

---

explain the operating principles of CVT & RVT

2 Answers  

---

In power plant synchronizing time (synchroniging meter should be 12'o clock position only. why not 6'o clock position not possible.

1 Answers   ITC Infotech,

---

what diff. between earth nd neutral?

3 Answers   NTPC,

---

What is the role of a Production Engg in a Industry?????

1 Answers  

---

what is F.A.P in fire alarming system?

3 Answers  

---