why used in starter in tube ligtht circuit.
- 4 Answers
- 8050 Views
- College School Exams Tests, HP, I also Faced
- E-Mail Answers
Answer Posted / michael thindiu
A preheat fluorescent lamp "starter" (automatic starting
switch) is required in bigger tubes which must be struck at
high voltage in the range of a thousand volts. When
starting the lamp, a glow discharge will appear over the
electrodes of the starter. This glow discharge will heat
the gas in the starter and cause the bi-metallic electrode
to bend towards the other electrode. When the electrodes
touch, the two filaments of the fluorescent lamp and the
ballast will effectively be switched in series to the
supply voltage. This causes the filaments to glow and emit
electrons into the gas column by thermionic emission. this
process is repeated by the starter untill the spontanious
filament emition.
| Is This Answer Correct ? | 16 Yes | 3 No |
Post New Answer View All Answers
It is desired to flood light the front of a building 42 meters wide and 16 meters hig.Projectors of 30 degree beam spread and 1000 watt lamps giving 20 lumen/watt are availabl.If the desired level of illumination is 75 lumen/m and show a suitable scheme.Assume the cofficient of utilization, deprecitation factor and waste light factor are 0.4, 13 and 1.2 respectively.
I have done my m.tech in electrical engg discipline. Can any one please suggest me how should I prepare for getting into phd in iit or nit.How should I prepare for getting into lecturership
If two Transformers are connected in parallel having impedance of 50KA in both transformers will the impedance increase or decrease after connecting transformers in parallel?
How to select, design,size & calculate for 11 KV/33KV/66KV/132KV/220 KV/440 KV circuit breaker for HT side of transformer protection/HT distribution protection?
5- What is the task (function) of the excitation and isolation transformers in power plant? 6- What is the task (function) of LCI (A), LCI (B) and LCI (COS) in power plant? : LCI (A) and LCI(B) are load commutating inverter for generator turbine starting. , LCI (COS) is load commutating inverter change over switch
earth also having a gravitational force (magnetic field of north and south)but it attracts any object compare to this theartifical magnetic cant perform same as earth why?
What is different bewteen low or high impedance busbar protection scheme
what do w do when the output of generator is fluctuating?
What is the high series capacitance winding on high voltage power transformer ?
th how could we differentiate between armoured copper and armoured aluminium cable what is the basic application? why we prefer the armoured copper as compared to armoured aluminium.
What si the d/f b/w KVA & KWH, kvarh & kvar, kwh & kvar phase voltage & line voltage
What is a dc motor?
What is the dc grounding system and what is diff between AC/DC grounding system?
pls tel me the electric train traction motors name plate details like rpm,torue,voltage,amps,watts..ect..
TCS IS IT COMPANY THEN WHY DO THEY NEED ELECTRICAL &ELECTRONICS ENGINEERS?
