# Electronic Devices - Communications

## Why Electronic Devices Communications?

In this section you can learn and practice Electronic Devices Questions based on "Communications" and improve your skills in order to face the interview, competitive examination and various entrance test (CAT, GATE, GRE, MAT, Bank Exam, Railway Exam etc.) with full confidence.

## Where can I get Electronic Devices Communications questions and answers with explanation?

IndiaBIX provides you lots of fully solved Electronic Devices (Communications) questions and answers with Explanation. Solved examples with detailed answer description, explanation are given and it would be easy to understand. All students, freshers can download Electronic Devices Communications quiz questions with answers as PDF files and eBooks.

## Where can I get Electronic Devices Communications Interview Questions and Answers (objective type, multiple choice)?

Here you can find objective type Electronic Devices Communications questions and answers for interview and entrance examination. Multiple choice and true or false type questions are also provided.

## How to solve Electronic Devices Communications problems?

You can easily solve all kind of Electronic Devices questions based on Communications by practicing the objective type exercises given below, also get shortcut methods to solve Electronic Devices Communications problems.

### Exercise :: Communications - General Questions

1.

A certain fiber-optic cable has the following characteristics: n1 = 1.82 and n2 = 1.73. What is the value of θc?

 A. 71.90º B. 0.95º C. 18.1º D. 1.81º

Explanation:

No answer description available for this question. Let us discuss.

2.

An AM demodulator can be implemented with a linear multiplier followed by a ________ filter.

 A. low-pass B. high-pass C. band-pass D. band-stop

Explanation:

No answer description available for this question. Let us discuss.

3.

The intermediate frequency in a standard AM receiver is

 A. 455 Hz. B. 455 kHz. C. 4.55 MHz. D. none of the above

Explanation:

No answer description available for this question. Let us discuss.

4.

In order for a light ray to propagate along a fiber-optic cable, what must the relationship be between the angle of incidence and the critical angle?

 A. θi > θc B. θi < θc C. θi = θc D. none of the above

Explanation:

No answer description available for this question. Let us discuss.

5.

Light may be propagated along a fiber-optic cable in which of the following modes?

 A. multimode step index B. single-mode step index C. multimode graded index D. all of the above