CS/IT MCQ Collections

Top 20 MCQ Questions on Antennas and Propagation

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Here are the collections of top 20 MCQ questions on antennas and propagation includes multiple-choice questions on antennas and propagation in the wireless network. It includes MCQ questions on types of antennas, different routes of the signal radiated from an antenna, and the different types of noise such as thermal noise, intermodulation noise, crosstalk, and impulse noise.

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1) State whether the following statements about the antenna are True or False.
i. It converts electrical power into electromagnetic waves and vice versa.
ii. It can be used either as a transmitting antenna or a receiving antenna.
iii. The Same antenna can not be used for both transmission and reception.
A) i-True, ii-True, iii-True
B) i-True, ii-False, iii-True
C) i-False, ii-True, iii-True
D) i-True, ii-True, iii-False

2) The … antenna consists of two straight collinear conductors of equal length, separated by small gap.
A) half-wave dipole
B) horizontal-quarter wave dipole
C) vertical-quarter wave dipole
D) folded dipole

3) A … antenna is the type commonly used for automobile radios and portable radios.
A) half-wave dipole
B) horizontal-quarter wave dipole
C) vertical-quarter wave dipole
D) folded dipole

4) A … has a uniform or omnidirectional radiation pattern in one dimension.
A) half-wave dipole
B) horizontal-quarter wave dipole
C) vertical-quarter wave dipole
D) folded dipole

5) … antenna is used in terrestrial microwave and satellite applications.
A) Isotropic
B) Marconi
C) Parabolic reflective
D) Folded dipole

6) An … antenna is a point in space that radiates power in all directions equally.
A) Isotropic
B) Marconi
C) Parabolic reflective
D) Folded dipole

7) A signal radiated from an antenna travels along with one of the following routes.
i. Ground wave
ii. Line of sight (LOS)
iii. Skywave
A) i and ii only
B) ii and iii only
C) i and iii only
D) All i, ii and iii

8) The … is connected at one end to the surface of the earth and to the ionosphere at the other.
A) Ground wave
B) Line of sight (LOS)
C) Skywave
D) Quater wave

9) … is an example of ground wave communication.
A) FM Radio
B) AM Radio
C) CB Radio
D) Microwave

10) In the …, the wave is in the ionosphere, it is strongly bent, or reflected and ultimately back to the ground.
A) Ground wave
B) Line of sight (LOS)
C) Skywave
D) Quater wave

11) … is an example of skywave communication.
A) FM Radio
B) AM Radio
C) CB Radio
D) Microwave

12) … is a type of propagation that can transmit and receive data only where transmit and receive stations are in view of each other.
A) Ground wave
B) Line of sight (LOS)
C) Skywave
D) Halfwave

13) Which of the following is/are the examples of line-of-sight communication?
i. AM Radio
ii. FM Radio
iii. Microwave
A) i and ii only
B) ii and iii only
C) i and iii only
D) All i, ii and iii

14) … is uniformly distributed across the frequency spectrum and hence is often referred to as white noise.
A) Thermal Noise
B) Intermodulation Noise
C) Impulse Noise
D) Crosstalk

15) … is produced when there is some non-linearity in the transmitter-receiver.
A) Thermal Noise
B) Intermodulation Noise
C) Impulse Noise
D) Crosstalk

16) … occur when unwanted signals are picked up by microwave antennas.
A) Thermal Noise
B) Intermodulation Noise
C) Impulse Noise
D) Crosstalk

17) State whether the following statements about the impulse noise are True or False.
i. It was generated from external electromagnetic disturbances.
ii. It is generally only a minor annoyance for analog data.
iii. It is the secondary source of error in digital data transmission.
A) i-True, ii-True, iii-True
B) i-True, ii-False, iii-True
C) i-False, ii-True, iii-True
D) i-True, ii-True, iii-False

18) … occurs when an incoming signal hits an object whose size in the order of the wavelength of the signal or less.
A) Scattering
B) Diffraction
C) Fading
D) Reflection

19) … occurs at the edge of an impenetrable body that is large compared to the wavelength of radio wave.
A) Scattering
B) Diffraction
C) Fading
D) Reflection

20) … occurs when the signal encounters a surface that is large relative to the wavelength of the signal.
A) Scattering
B) Diffraction
C) Fading
D) Reflection

Answers:

  1. D) i-True, ii-True, iii-False
  2. A) half-wave dipole
  3. C) vertical-quarter wave dipole
  4. A) half-wave dipole
  5. C) Parabolic reflective
  6. A) Isotropic
  7. D) All i, ii and iii
  8. A) Ground wave
  9. B) AM Radio
  10. C) Skywave
  11. C) CB Radio
  12. B) Line of sight (LOS)
  13. B) ii and iii only
  14. A) Thermal Noise
  15. B) Intermodulation Noise
  16. D) Crosstalk
  17. D) i-True, ii-True, iii-False
  18. A) Scattering
  19. B) Diffraction
  20. D) Reflection

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