For small size, high frequency coils, the most common core material is- a. )Air b. )Ferrite c.) Powdered ion d.) Steel
11 19340. If we have a parallel plate capacitor of plate area 'A' and plate separatoin t and having a capacity C and a metallic plate r of area A and of negligible thickness is introduced in the capacitor at a distance from either of the two plates as shown in the given figure then the capacity of the capacitor will become a.) b.) C c.) 2C d.) 4C
3 6618. A superconductor is a a.) A material showing perfect conductivity and Meissner effect below a critical temperature b.) A conductor having zero resistance c.) A perfect conductor with highest di-magnetic susceptibility d.) A perfect conductor which becomes resistance when the current density through it exceeds a critical value
BSNL,
1 5745When an inductor tunes at 200 KHz with 624 pF capacitor and at 600 KHz with 60.4 pF capacitor then the self capacitance of the inductor would be a) 8.05 pF b) 10.05pF c.) 16.01pF d.) 20.01pF
3 8923Sparking occur when a load is switched off because the circuit has high a.) Inductance b.) Capacitance c.) Resistance d.) None
14 39282Sparking between contacts can be reduced by inserting a a.) Resistance in the line b.) Capacitor in series with contacts c.) Capacitor in parallel with contacts d.) None
4 14912RF amplifier of an A.M. receiver is normally biased in a.) Class 'A' b.) Class 'b' c.) Class 'C' d.) None
BSNL,
5 15530pls tell me the syllabus and books that suitable for the post of junior and section engineer cateogries.
1 3337i am also applied for the AAI jr executive (electronics/ATC) written test. pls forward me the syllabus & test pattern if any question papers, any one got reply for this quaries? if any one know plz reply to me on my email shivani_19jan@yahoo.co.in
3 6383Post New Electronics Communications Questions
State the different types of flip flop and their uses?
What is the work of BOIA, TRx, BB2F, Duplexer, Combiner, Multi-coupler, RRI.
For what a triggering circuit is provided in a cro?
Define holding current?
snd me karur vysya bank clerk model papers kundavarapu.harish90@gmail.com
how does polarised capacitor works?at which situation in circuit it is used
Define dynamic resistance of a p-n junction diode in forward biased condition.
# What is D-FF? # What is the basic difference between Latches and Flip flops? # What is a multiplexer? # How can you convert an SR Flip-flop to a JK Flip-flop? # How can you convert an JK Flip-flop to a D Flip-flop? # What is Race-around problem? How can you rectify it?
Can you help me correct FM transmitter circuit?
why we use chopper circuit in TV ?
What are the types of cyclo-converters?
Explain the importance of if in radio receiver?
what should i prepare for an airport authority of india's interview for ATC post? I have interview in next week. so, Please help me out.
Which type of connector we use at the end of GSM antenna/
What is an idea current source?