Why machines are avoided to work is saturation region of B- H curve?

3 Answers  

---

Can we put 3 layers of cable tray while installing tray

0 Answers   NTPC, Siemens,

---

WORKING PRINCIPLE OF HALOGEN LAMP & MEQUERY LAMP

1 Answers  

---

what is the role of impedance in transformer?based on secondary f.l.current(139 amps) and impedance(4.07) of 415/415v of 100 kva transformer. what is the primary current?

1 Answers  

---

What is the Surge suppresor? Why using in a UDB's and How it works?

0 Answers  

---

I have carried out wiring for lighting in a shed in Industrial area which contains Metal halide lamps & have balanced in 3ph.Now when we put all the lines on in the daytime the current taken at 3phases at MCB comes to be equal i.e.28,29,28Amps respectively but in the night time i.e between 7p.m.to 11p.m. at the same MCb the current is 52,59,62Amp, though I have fit 63A MCB it is tripping in the above period.What may be the reason.? Note: This industry is located in industrial area where majority of steel ingot manufacturing plants are there. Whether this may be due to harmonic? what should I do to overcome above problem.pl suggest urgently.

4 Answers  

---

In convertor can we use rectifier thyristor in place of invertor thyristor with explain.

0 Answers  

---

What is the purpose of SSVW, IOVW, DVDF Tests in transformer? Those who are answering, pls send mail ids also.

1 Answers  

---

Why a motor blower cobination draw more current at winter than summer?

1 Answers  

---

What is inrush current?

0 Answers  

---

why we ground the scondary of current transformer.

4 Answers  

---

what is international rules of electrical?

5 Answers   Essar,

---