# Mobile Communication - Electronic Engineering (MCQ) questions & answers

Dear Readers, Welcome to Mobile Communication multiple choice questions and answers with explanation. These objective type Mobile Communication questions are very important for campus placement test, semester exams, job interviews and competitive exams like GATE, IES, PSU, NET/SET/JRF, UPSC and diploma.

Specially developed for the Electronic Engineering freshers and professionals, these model questions are asked in the online technical test and interview of many companies.

These tutorial are also important for your viva in university exams like Anna university, Pune, VTU, UPTU, CUSAT etc.

1)   The techniques used for small scale multipath measurements are

1. Direct RF pulse system
2. Spread spectrum sliding correlator channel sounding
3. Frequency domain channel sounding

- Published on 18 Nov 15

a. 1 and 2 are correct
b. 1 and 3 are correct
c. 2 and 3 are correct
d. All the three are correct
 Answer  Explanation  Related Ques ANSWER: All the three are correct Explanation: No explanation is available for this question!

2)   Direct RF pulse system helps in calculating
- Published on 18 Nov 15

a. Impulse response in frequency domain
b. Impulse response in phase domain
c. Power delay of the channel
d. All of the above
 Answer  Explanation  Related Ques ANSWER: Power delay of the channel Explanation: No explanation is available for this question!

3)   The received signal from a multipath channel is expressed as
- Published on 18 Nov 15

a. Convolution of transmitted signal and impulse response
b. Addition of transmitted signal and impulse response
c. Subtraction of transmitted signal and impulse response
d. All of the above
e. None of the above
 Answer  Explanation  Related Ques ANSWER: Convolution of transmitted signal and impulse response Explanation: No explanation is available for this question!

4)   Impulse response of a multipath channel is determined by the fact that
- Published on 18 Nov 15

a. Mobile radio channel may be modeled as linear filter
b. Impulse response is time varying
c. Both a & b
d. None of the above
 Answer  Explanation  Related Ques ANSWER: Both a & b Explanation: No explanation is available for this question!

5)   The effects of small scale multipath propagation are

1. Changes in signal strength
2. Random frequency modulation
3. Time dispersion

- Published on 18 Nov 15

a. 1 and 2 are correct
b. 1 and 3 are correct
c. 2 and 3 are correct
d. All the three are correct
 Answer  Explanation  Related Ques ANSWER: All the three are correct Explanation: No explanation is available for this question!

6)   Small scale multipath propagation is caused due to waves with

1. Different propagation delays
2. Different amplitudes
3. Different phase

- Published on 18 Nov 15

a. 1 and 2 are correct
b. 1 and 3 are correct
c. 2 and 3 are correct
d. All the three are correct
 Answer  Explanation  Related Ques ANSWER: All the three are correct Explanation: No explanation is available for this question!

7)   Coherence bandwidth is
- Published on 18 Nov 15

a. Channel that passes all spectral components with equal gain
b. The bandwidth of modulated signal
c. Channel that passes all spectral components with linear phase
d. Both a and c
e. Both a and b
 Answer  Explanation  Related Ques ANSWER: Both a and c Explanation: No explanation is available for this question!

8)   The power delay profile helps in determining
- Published on 18 Nov 15

a. Excess delay
d. All of the above
 Answer  Explanation  Related Ques ANSWER: All of the above Explanation: No explanation is available for this question!

9)   If coherence time of the channel is smaller than the symbol period of the transmitted signal, it is
- Published on 18 Nov 15