Interested to Buy Any Domain ? << Click Here >> for more details...
Answer Posted / bhadrappahr
Fluorescent tube is a gas discharge lamp. It consists of two
filamentary thermionic electrodes mounted at each end of
glass tube. The tube is filled with an inert gas like
mercury at low pressure and sealed. A high voltage is
necessary to start conduction through the tube. To obtain
this high voltage during starting an iron cored choke and
glow type starter are connected in series with filaments.
When the supply is switched ON an arc is struck between the
starter electrodes which causes a current to flow through
the choke and filaments. The filaments get heated up and
emit electrons. After a few seconds the starter electrodes
separates and due to this separation current is interrupted.
This interruption causes high voltage to be induced in the
choke which appears across the filaments of the tube
resulting in discharge through the tube. The gas inside the
tube is ionized and the ionized gas emits ultra-violet
radiation which is absorbed by the fluorescent material
coated inside of the tube this in turn emits light
radiations causing the tube to glow.
| Is This Answer Correct ? | 7 Yes | 0 No |
Post New Answer View All Answers
What is the basic principle of welding process?
what is inter connected dc generator?
Parts of machine and their discription in details with suitable photo
how we findout a ignater is faulty or not?
Define norton equivalent circuit?
Star Delta Diagram with full description
WHAT IS THE TECHNICAL SPECIFICATION OF C CURVE & D CURVE LEGRAND MAKE MCB
why the colour of insultor stack , petticoat is brown. Is it has some technical reason.
how to avoid electrical shock how capacitor store charges wat are the speed control of induction motors state faradays law flemings left hand rule what is rotary converter wat is transmission and distribution what are the sources of energy abrevation of acb,vcb,sf6,igbt what is output equation of transformer which test copper iron and iron loss are calculated what is eddy current draw a single line diagram (10 marks) draw direct online starter(10 marks)
What is tan delta & PPM in transformer? and whats its IS value?
Explain how to determine capacitor tolerance codes?
single phase power supply give to separate one steel coup with water, what reaction create
Why the efficiency of a three-phase induction is the motor is less than that of a three-phase transformer?
what is earth pit , how we can measured it, what earth rods reference
after how many spot we must chang secondry cable in portable spot welding gun?
