UGC NET Communication MCQ. We covered all the UGC NET Communication MCQ in this post for free so that you can practice well for the exam.
Install our MCQTUBE Android app from the Google Play Store and prepare for any competitive government exams for free.
These types of competitive MCQs appear in the exams like SSC, Railways, Defence, CDS, NDA, State PSC & CSE Exams, etc. We created all the competitive exam MCQs into several small posts on our website for your convenience.
You will get their respective links in the related posts section provided below.
Related Posts:
- Computer Science MCQs Online Test
- Objective Questions of Computer Science
- Computer Science Quiz Questions with Answers Multiple Choice
MCQ on Communication for Students
Sky wave propagation is not possible for frequencies
(a) equal to 30 MHz
(b) less than 30 MHz
(c) greater than 30 MHz
(d) None of these
Option c – greater than 30 MHz
The service area of space wave communication increases by
(a) increasing the height of the transmitting antenna
(b) decreasing the height of receiving antenna
(c) increasing the height of both the transmitting and receiving antenna
(d) decreasing the distance between the transmitting and receiving antenna
Option c – increasing the height of both the transmitting and receiving antenna
Array gain of an antenna is
(a) directly proportional radiated by isotropic to the power antenna
(b) invesely proportional radiated by isotropic to the power antenna
(c) directly proportional to the power radiated by the practical antenna
(d) inversely proportional to the square of power radiated by the practical antenna.
Option a – directly proportional radiated by isotropic to the power antenna
The tank circuit used in a radio transmitter should have
(a) high effective Q
(b) low effective Q
(c) loosely coupled load
(d) Both (a) and (c)
Option d – Both (a) and (c)
Statement 1: Short wave bands are used for the transmission of radio waves to a large distance. Statement 2: Short waves are reflected by the ionosphere.
(a) Statement -1 is false, Statement 2 is true
(b) Statement -1 is true, Statement-2 is true; Statement -2 is a correct explanation for Statement-1
(c) Statement -1 is true, Statement-2 is true; Statement -2 is not a correct explanation for Statement-1
(d) Statement -1 is true, Statement 2 is false
Option b – Statement -1 is true, Statement-2 is true; Statement -2 is a correct explanation for Statement-1
The intensity of the electric field obtained at the receiver antenna for space wave propagation is
(a) directly proportional to the perpendicular distance from the transmitter to the antenna
(b) inversely proportional to the perpendicular distance from the transmitter to the antenna
(c) directly proportional to the square perpendicular distance from the transmitter to the antenna
(d) inversely proportional to the square perpendicular distance from the transmitter to the antenna
Option d – inversely proportional to the square perpendicular distance from the transmitter to the antenna
Ground waves are polarised
(a) parallel to the earth’s surface
(b) normal to the earth’s surface
(c) at an angle of 45° from the earth’s surface
(d) in any direction.
Option b – normal to the earth’s surface
Sky wave propagation is not possible for waves of frequency > 30 MHz because
(a) these waves do not have much energy to reach the ionosphere
(b) they are not reflected by the ionosphere
(c) they get absorbed by the troposphere
(d) they get reflected by the stratosphere
Option b – they are not reflected by the ionosphere
Which mode of communication is most suitable for a carrier wave of frequencies around 100 MHz?
(a) Satellite
(b) Ground wave
(c) Line of sight
(d) Ionospheric
Option c – Line of sight
In which of the following areas can GPS technology be used? 1. Mobile phone operations 2. Banking operations 3. Controlling the power grids Select the correct answer using the code given below :
(a) 1 only
(b) 2 and 3 only
(c) 1 and 3 only
(d) 1, 2 and 3
Option d – 1, 2 and 3
Fading of the received radio signals in a mobile communication environment occurs because of …..…..
(a) Direct propagation
(b) Multipath Propagation
(c) Bi-path Propagation
(d) None of the above
Option b – Multipath Propagation
Read the following statements with reference to MIMO. 1. It is a type of Antenna-free technology. 2. It is a type of Video communications technology. Select the correct answer using the code given below.
(a) I only
(b) 2 only
(c) 1 and 2 only
(d) Neither 1 nor 2
Option d – Neither 1 nor 2
With reference to Near Field Communication (NFC) Technology, which of the following statements is/are correct? 1. It is a contactless communication technology that uses electromagnetic radio fields. 2. NFC is designed for use by devices that can be at a distance of even a meter from each other 3. NFC can use encryption when sending sensitive information. Select the correct answer using the code given below.
(a) 1 and 2 only
(b) 3 Only
(c) 1 and 3 only
(d) 1, 2 and 3
Option b – 3 Only
The critical frequency that gets reflected back from the ionosphere is
(a) same for all layers of the ionosphere
(b) different for different layers of the ionosphere
(c) not dependent on layers of the ionosphere
(d) None of these
Option b – different for different layers of the ionosphere
A buffer amplifier is used between one master oscillator and a Harmonic generator in AM transmitter because
(a) it reduces the S/N ratio
(b) it amplifies the signal
(c) it increases the signal frequency
(d) it avoids frequency deviation in tank-circuit
Option d – it avoids frequency deviation in tank-circuit
Which of the following happen to be the limitations of optical fiber? I. The architecture of their couplers. II. Costs of implementing them. III. Modification of the software and hardware on existing systems. IV. The difficulty of installing the cables.
(a) II and IV only.
(b) I, II, and III only.
(c) I, III, and IV only.
(d) I, II, III, and IV.
Option c – I, III, and IV only
Shanon’s law relates
(a) the information carrying capacity to S/N ratio
(b) frequency to antenna gain
(c) amplitude to antenna gain
(d) antenna gain to the channel bandwidth
Option a – the information carrying capacity to S/N ratio
In sky-wave propagation, skip distance depends on
(a) the frequency of e.m. waves transmitted
(b) the critical frequency of the layer
(c) the height of the layer above the earth’s surface
(d) all of the above
Option d – all of the above
We covered all the UGC net communication mcq above in this post for free so that you can practice well for the exam.
Check out the latest MCQ content by visiting our mcqtube website homepage.
Also, check out:
