Answer Posted / rajnish
A fluorescent lamp or fluorescent tube is a gas-discharge
lamp that uses electricity to excite mercury vapor. The
excited mercury atoms produce short-wave ultraviolet light
that then causes a phosphor to fluoresce, producing visible
light
| Is This Answer Correct ? | 3 Yes | 0 No |
Post New Answer View All Answers
What is the difference between silicon controlled switch (scs) and gate turn-off switch (gto)?
What are the advantages of using c band for satellite communication?
Draw the circuit diagram of 1φ capacitor commutated current source inverter and explain its operation with equivalent circuits for different modes and necessary wave forms?
what are the basic logic elements?
What is circuit switching?
Explain why a voltmeter should be of very high resistance?
what are radio collars?
Explain why the shape of op-amp is triangular not other shape?
Give the typical value of bias current for ca741 operational amplifier.
Define what is the conductivity of perfect dielectric?
hi .. i have done my b.e in under electronics and communication engineering and now i have opted for computer engineering which has most of communication related subjects. still what should i answer, if i am been asked "why didnt yu opt for electrical engineering"
please send me the previous question papers of ntpc writen test for ece
Define negative frequency?
how many types of thyristor are? shortly define them with purpose, application & working principle?
Pls send Syllabus of Jr.Eng grade2 electronics e.n.no 02/2008 & model qustions to my id amarlalmeppurath@yahoo.com