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BSNL Electronics Communications Interview Questions
Questions Answers Views Company eMail

Oscillator crystal are made of a.) Silicon b.) Germanium c.) Quartz d.) None

5 10410

For small size, high frequency coils, the most common core material is- a. )Air b. )Ferrite c.) Powdered ion d.) Steel

11 12920

. 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 4482

. 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

1 4324

When 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 5061





Sparking occur when a load is switched off because the circuit has high a.) Inductance b.) Capacitance c.) Resistance d.) None

14 27118

Sparking 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 10908

RF amplifier of an A.M. receiver is normally biased in a.) Class 'A' b.) Class 'b' c.) Class 'C' d.) None

5 10295

The Entropy of the source is maximum when the symbols are...................?

795

Any idea of BSNL, JTO paper?

847

modern capacitors which have high capacitance in small size use a dielectric of?

4 6527

the maximum spectral response of the germanium and silicon is in the ?

3 6453

6dB pad introduces how much attenuation?

3 6860

What is the most common modulation system is used for telegraphy?

6 13423

IS THERE ANY COADING PRESENT IN EPBX SYSTEM? IF YES THEN HOW WE CAN INSTALL IT?

1 1845

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Un-Answered Questions

how we can come to know that motor winding resistance which showing by DMM is right or wrong???is there any chart or something that we will compare & check???

713


Wt is the use of mass mapping?

766


How to Find all files (or files of a certain type) in a given directory?

721


What are the do?s and don?ts?

954


How could a garment factory benefit from renewable energy

1569






what is the difference between dropout fuse and horn gap fuse. how to choose between them

6638


what is the limitations of hotel management project in .net?

4684


sir now i am studying B.Tech final year so now i am eligible for writing group 1 and 2 or not?

542


how much GROUND & NEUTRAL VOLT maintain in data center.

701


state types of reflectors in illumination engg. ???????

749


how does ELR works? explain

1389


How we calculat the NGR of 3phase Generator, Our generation voltage 11KV

2185


List out the the types of Mounting Light fixture?

482


what is semi&full custom difference b/w these two?

896


wht is the diff. b/n initialization and lotus of event

717






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