Answer / venkat

as the distance between two electrodes is large, 230v is
not sufficient to produce arc between two electrodes.high
voltage is required to produce arc. Igniter is used to
produce high voltage between two electrodes of the sodium
vapour.

Answer / hjit4u

Purpose of the ignitor is to give pulese to the choke to
start light the lamp.

Answer / ssreenu

In other words the purpose of Ignitor is just like a
starter in tube set.

Answer / raja

ballast used in sodium vapour lamp is a normal coil which is
used to boost high voltage ., igniter used to give pulse to
ballast to boost voltage at a short intervals

Answer / anil kumar guru

Due to differnce between two electrode is more in hpsv lamp hence high voltage is required at the Time of starting by changing current across the blast that do ignaitor

Answer / navneet

we can use ignitor only, use of capacitor is not necessary....

Answer / sidlingu

ignitor is a temperature controller

difference b/w series&parallel

4 Answers   ABB,

In 11KV Double pole structure for each phase we are using Disc one Insulator. Why we are not using 2 r above insulators instead of one insulator?

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Why consider motor rpm to select capacitor for motor

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0 Answers  

hi i m going to attend bhel interview on 22nd sep 2008 for ET(electrical engineering).pls guide me how to prepare for the interview.i am a fresher.

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Send me Model Question paper for the post Scientific Assistant in NPCIL

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why use -48 volt DC power in telecom?

3 Answers  

Give some differences between open loop and closed loop control systems.

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can we replace d.c.motor by 3 phase induction motor for a particular application

4 Answers  

which one is more costly:single phase induction motor or 3 phase induction motor??give proper reasons..

1 Answers  

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FULL FORM OF MCCB

3 Answers