Wireless Communication MCQ’s

This set of RF & Microwave Circuit Design Multiple Choice Questions & Answers (MCQs) focuses on “Wireless Communication”.

1. Point to point communication systems use low gain antennas for communication.
a) True
b) False

2. In this method of wireless communication, communication happens only in one direction:
a) Simplex
b) Duplex
c) Half duplex
d) None of the mentioned

3. Most of the wireless systems today operate at a frequency of about:
a) 800 MHz
b) 100 MHz
c) 80 MHz
d) None of the mentioned

4. The power density radiated by an isotropic antenna is given by the relation:
a) Pt/4πR2
b) Pt/4R2
c) Pt/R2
d) None of the mentioned

5. If the distance between a transmitting station and receiving station is 1 Km and if the antennas are operating at a wavelength of 5 cm, then the path loss is:
a) 108 dB
b) 12 dB
c) 45 dB
d) 48 dB

6. Link margin that is used to account for fading effects is called fade margin.
a) True
b) False

7. The power received by a receiving antenna given that Pt is the transmitted power is:
a) GrGtλ2pt/ (4πR)2
b) Gtλ2pt/ (4πR)2
c) Grλ2pt/ (4πR)2
d) None of the mentioned

8. The amount of power by which the received power must be greater than the threshold level required to maintain a minimum quality of service is called _______
a) Line loss
b) Link budget
c) Link margin
d) None of the mentioned

9. One of the most important requirements of a radio receiver is high gain.
a) True
b) False

10. A radio receiver operating at microwave frequencies must have very high selectivity.
a) True
b) False

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