what is the use of ballast in tube

Answers were Sorted based on User's Feedback



what is the use of ballast in tube..

Answer / k.prakashchandra

Its first function is strike arc across the tube by inducing
high voltage with the help of starter and the second is to
limit the current as the resistance across the tube becomes
zero after the arc is struck.

Is This Answer Correct ?    2 Yes 1 No

what is the use of ballast in tube..

Answer / thowsif_emerson


Unlike incandescent lamps, fluorescent lamps always require
a ballast to regulate the flow of power through the lamp.

Is This Answer Correct ?    3 Yes 3 No

Post New Answer

More Electrical Engineering Interview Questions

what is the purpose of ignitor in lighting fixer

1 Answers  


What are the rating wise protections required for Generators from 600KVA to 2000KVA

3 Answers  


How equivalent impedance is calculated in thevenin theorem?

0 Answers  


what is the different bitween ETP & WTP

1 Answers   Square Pharma,


single phase voltage 230 and Three phase voltage 450 why 690 voltage

1 Answers   XYZ,






What is difference between dc three point starter and dc four point starter?

3 Answers   Chettinad,


What is GIS (Gas Insulated Switchgear)

3 Answers   Power Grid,


What are the parts in a inverter?

0 Answers  


what is consequences of neutral and earth connect?

0 Answers  


what will happen if the connections of protection ct reverse? will it burn the ct?

2 Answers  


How should i design a 1ph & 3 ph transformer. Kindly let meknow all steps and formulaes related to design from scratch.

0 Answers  


sir, i'm preparing for hpcl exam officer trainee pls tell me how the exam ques paper pls pls

0 Answers  


Categories
  • Civil Engineering Interview Questions Civil Engineering (5085)
  • Mechanical Engineering Interview Questions Mechanical Engineering (4451)
  • Electrical Engineering Interview Questions Electrical Engineering (16632)
  • Electronics Communications Interview Questions Electronics Communications (3918)
  • Chemical Engineering Interview Questions Chemical Engineering (1095)
  • Aeronautical Engineering Interview Questions Aeronautical Engineering (239)
  • Bio Engineering Interview Questions Bio Engineering (96)
  • Metallurgy Interview Questions Metallurgy (361)
  • Industrial Engineering Interview Questions Industrial Engineering (259)
  • Instrumentation Interview Questions Instrumentation (3014)
  • Automobile Engineering Interview Questions Automobile Engineering (332)
  • Mechatronics Engineering Interview Questions Mechatronics Engineering (97)
  • Marine Engineering Interview Questions Marine Engineering (124)
  • Power Plant Engineering Interview Questions Power Plant Engineering (172)
  • Textile Engineering Interview Questions Textile Engineering (575)
  • Production Engineering Interview Questions Production Engineering (25)
  • Satellite Systems Engineering Interview Questions Satellite Systems Engineering (106)
  • Engineering AllOther Interview Questions Engineering AllOther (1379)