why voltage rating not mention at HPSV or HPMV lamps?

Question Posted / asifktpk

2 Answers
6895 Views
OPS, I also Faced
E-Mail Answers

Answers were Sorted based on User's Feedback

why voltage rating not mention at HPSV or HPMV lamps?..

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

Is This Answer Correct ?

7 Yes

2 No

why voltage rating not mention at HPSV or HPMV lamps?..

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

Is This Answer Correct ?

4 Yes

1 No

Post New Answer

More Electrical Engineering Interview Questions

How to know about the rating(voltage and other) of induction motor if its name plate is missing at the manufacturing site.

0 Answers ABB,

Why CT's shall not be kept open?

5 Answers ABC, Qatar Gas, TIPL,

Why electrons flow only one direction in semiconductors. why can not flow both directions

1 Answers

We have two parts in generator, electrical & mechanical. how it works?

0 Answers TATA,

Readings of ER300P Trivector meter

0 Answers

Explain what is clipper and clamper circuits?

0 Answers

How to do maint. Of busbar.

1 Answers KSEB, L&T, Siemens,

How will polarity test of Dy5 Transformer ?

0 Answers

what is use of capacitor in fan

8 Answers ABB,

why do you give the dc supply to field of alternator

3 Answers

why Square root 3 used for three phase?

2 Answers

725KW Three DG set Synchronised but DG no-1 power showing 750KW DG n0-2 power showing 500KW DG no-03 showing 500KW. DG is Shynchronised but why this different power showing?

3 Answers

For more Electrical Engineering Interview Questions Click Here