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Electronics Communications Interview Questions
Questions Answers Views Company eMail

Why value of rx level is always negative?

Ericsson,

3740

How to select lightning arrester for line trap? What are the criteria?

 1613

What is mean by Compression technic and its formula? How many types of adaptors are there? How adaptive algorithm works for speech compression using Cosine packet transform?

 1438

What are the three services offered by GSM? Explain each of them briefly.

 1 8116

What is the difference between Synthesised Frequency Hopping and Base Band Frequency Hopping?

 2845

Which uplink/downlink spectrum is allocated to GSM-900?

 1 4862

Which uplink/downlink spectrum is allocated to DCS-1800?

 1883

How many carrier frequencies are there in GSM-900/DCS-1800? How much is the separation between the carrier frequencies?

 2 9120

What is Ciphering? Why do we need it? Name the algorithm(s) used in it?

 3 7336

What is Authentication? Why do we need it? Name the algorithm(s) used in it?

 1 4178

What is equalisation? Why do we need it?

 1 4047

What is Interleaving? Why do we need it?

 2145

Why do we need digitisation?

 2483

Explain Speech Coding.

 2859

What is channel coding?

 1427

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Un-Answered Questions { Electronics Communications }

Define various modes of operation of timer.

591

Each Electronics Exchange operates on -48 volt. What is the reason that exchange operates only -48 volt DC?

1464

how to work induction mooter

1450

What are the faults that might happen in a DCS ?

1485

Why slew rate is not infinite in ideal op-amp?

558




What do you mean by drift velocity and mobility of a free electron?

554

What are the advantages of gray code?

637

What is piv of a diode in a rectifier circuit?

591

Define what is the effect of temperature on extrinsic semiconductor?

632

How the current is reduced to zero in a photodiode?

574

What is a p-n junction diode? State and explain some of its applications.

596

What is the difference between latches and flip flop?

543

hi freinds my name is lokesh and i am preparing for bel so anybody having bel question papers can please send to my mail-loki_426@yahoo.com

1549

In what does the Gas Leds emit radiation?

586

Explain the working of stepping motors.

633

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