Answer / k.prakashchandra

High voltage is required to strike the arc inside lamp at
the starting point and once the arc is struck and lamp is
illuminated ,the voltage across the lamp is zero.It is the
ballast which has to control the current and it requires
voltage rating and not the lamp

Answer / arunkumar

So far i know HPSV amd HPMV lamps requries only 210v for
initial ignition. Only the Metal halide lamps require 222V
constantly to glow

can anyone give an idea about dia calculation in cold rolling mill

0 Answers  

---

WHY THE COLOR OF OUTDOOR TRANSFORMER IS BLUE ONLY???

0 Answers  

---

A shopkeeper allows 10% discount on the price of an article and sells it for Rs 7,600. What is the marked price of the article?

1 Answers  

---

1)What will you do if main incomer VCB fail in your site ?

7 Answers   Honeywell,

---

what is the function of potential transformer in s/s

6 Answers  

---

---

How 3 phase invertor works?

0 Answers   Aero Ltd,

---

all 3 current transformers (C.T) are burnt in a L.T Panel - what are the possible reasons

5 Answers  

---

What happens if we run alternator on under frequency? 

0 Answers   SRHHL,

---

why voltage rating of transformers are in multiples of 1.1?

3 Answers  

---

how can i get the formula to find out the cable size if i know the load of main fuse protection.

0 Answers  

---

what is use of governer in diesle engine

1 Answers   Aricent,

---

Triping principle of ELCB&RCCB? wht is the difference between these two?

2 Answers  

---