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

What is diversity factor.

2 Answers   Cadbury,

---

how much up to LT Voltage range?

4 Answers  

---

i had aplied Hindustan Petroleum corporation limited for the post of maintenance technician -Electrical,i want model questions,if anybody have please send it or please advice?

0 Answers  

---

For maintenance Department What type documention requir for ISo & TS audit

1 Answers   Megatron Solutions, Sams,

---

how many types method in earth testing?

3 Answers   ONGC,

---

---

how the rotating magnetic fieldis produced in induction machines??? give the correct explanation.is there any mathematical expression for the same?

1 Answers  

---

10Hp, 3-phase, 415v, 50Hz induction motor. The above motor is to run on Star-Delta connection, so how do i make following hardware selection 1) MCB, 2) Contactor, 3) Wire Gage (Depending on P-P current or Line Current), 4) OLR, Please tell in detail how to do the above, so as to get the ans. of it even if the Hp rating changes.

1 Answers   Engro,

---

why the voltage is in digit of 11/33/132/220/440 please send me on shukrerabbi_abkhalil@rediffmail.com with thanks

3 Answers  

---

For 132 KV line, PT or CVT which is prefered for measuring & protection? is there any IS or IEE standard available?

1 Answers  

---

What is difference between YNyn0 and YNyn ??

0 Answers  

---

Direction of flow of active power and reactive power with logic?

0 Answers  

---

In 6600/√3/110/√3v voltage transformer,how much output voltage in open delta transformer,after removing 1-phase of primary side on transformer?

2 Answers  

---