What is the working principle of CFL & T5 tube light & 40W tube light with electronic ballast?

0 Answers   Remi,

---

what type of load we can give to motor shaft?

2 Answers  

---

Name different types of circuit breakers and their voltage ratings?

11 Answers   NTPC,

---

In a synchronous motor. if start is running at high speed.  What will be the starting torque : Higher Lower Zero

0 Answers  

---

Why sometime i receive GCU fault /Excitation voltage loss in my Generator Synch Panel .

1 Answers  

---

---

Can VFD step up to 60 Hz if it is designed to receive 50 Hz input?

3 Answers  

---

why measure the gravity in battery?

2 Answers  

---

how to calculate neutrel current

2 Answers  

---

Why increase in current leads to increase in conductor temperature?

0 Answers  

---

how calculate the electrical load for industry and office

2 Answers  

---

Do you know how to connect a motor of different H.Ps?

5 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  

---