Mobile Communication Multiple Choice Questions: Q&A

Mobile Communication Multiple Choice Questions. MCQs Electronics Engineering on the topic of Mobile Communication.

 

Mobile Communication Multiple Choice Questions

 

 

Slow frequency hopping refers to ??

a. One or more symbols transmitted in the time interval between frequency hops
b. More than one frequency hop during each symbol
c. A hopping rate greater than or equal to information symbol rate
d. Both a and c are correct

 

Paging systems could be used to ??

a. Send numeric messages
b. Send alphanumeric messages
c. Voice message
d. All of the above

 

Fast hopping is ??

a. More than one frequency hop during each symbol
b. A hopping rate greater than or equal to information symbol rate
c. One or more symbols transmitted between frequency hops
d. Both a and b
e. Both b and c

 

Paging systems were based on ??

a. Simplex systems
b. Half-duplex systems
c. Full duplex systems
d. None of the above

 

EE MCQs

 

Direct sequence spread spectrum demodulation uses ??

a. DPSK
b. FSK
c. ASK
d. QPSK

 

The world’s first cellular system was developed by ??

a. Nippon Telephone and Telegraph (NTT)
b. Bellcore and Motorola
c. AT&T Bell Laboratories
d. Qualcomm

 

The advantage of using Spread Spectrum modulation is/are ??

1. Interference rejection capability
2. Frequency planning is not required
3. Resistance to multipath fading
4. ISI is lesser

a. 1 and 2 are correct
b. 1, 2, and 3 are correct
c. 2 and 3 are correct
d. All the four are correct

 

DECT stands for ??

a. Digital European Cellular Telex
b. Digitized Emergency Cellular Telephone
c. Digital European Cordless Telephone
d. Digital European Cellular Telephone

 

Mobile Communication Multiple Choice Questions

 

 

In the spread spectrum technique, the multiple users are assigned with ??

a. Same spectrum and same PN code
b. Same spectrum and different PN code
c. Different spectrum and different PN code
d. Different spectrum and same PN code

 

The early FM push-to-talk telephone systems were used in ??

a. Simplex mode
b. Half-duplex mode
c. Full duplex mode
d. None of the above

 

Half-duplex system for communication has ??

a. Communication in single direction
b. Communication in a single direction at a time
c. Communication in both directions at the same time
d. None of the above

 

———– introduced Frequency Modulation for mobile communication systems in 1935 ??

a. Edwin Armstrong
b. Albert Einstein
c. Galileo Galilei
d. David Bohm

 

Mobile Communication Multiple Choice Questions

 

 

The carrier frequency of a TV remote control is in the range ??

a. of Infra red
b. < 100 MHz
c. < 1 GHz
d. < 2 GHz

 

The modulation technique used for mobile communication systems during world war II was ??

a. Amplitude modulation
b. Frequency modulation
c. ASK
d. FSK

 

The garage door opener is a ??

a. Transmitter
b. Receiver
c. Transceiver
d. None of the above

 

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