Explore topic-wise MCQs in Avionics.

This section includes 9 Mcqs, each offering curated multiple-choice questions to sharpen your Avionics knowledge and support exam preparation. Choose a topic below to get started.

1.

The refractivity of the troposphere is not a function of ________

A. Frequency
B. Temperature
C. Pressure
D. Partial pressure of water vapour
Answer» B. Temperature
Discussion
2.

The refractivity of the troposphere is not a function of _______?

A. Frequency
B. Temperature
C. Pressure
D. Partial pressure of water vapour
Answer» B. Temperature
Discussion
3.

Which of the following is true with respect to ionospheric scintillation effects?

A. It causes signal fading
B. Occurs at the equatorial and polar regions
C. Occurs mostly at day
D. Occurs when high solar activity is present
Answer» D. Occurs when high solar activity is present
Discussion
4.

TEC in the ionosphere is a function of solar radiation.

A. True
B. False
Answer» B. False
Discussion
5.

What is the increase in velocity of the signal by the ionosphere termed as?

A. Differential velocity
B. Velocity advance
C. Phase advance
D. Signal advance
Answer» D. Signal advance
Discussion
6.

What happens to the satellite signals as the density of the ionosphere is high?

A. Velocity increases
B. Velocity decreases
C. Signal strength increases
D. Frequency reduces
Answer» B. Velocity decreases
Discussion
7.

Satellite signals are refracted by the ionosphere.

A. True
B. False
Answer» C.
Discussion
8.

Which of the following makes the existence of ionosphere possible?

A. Rotation of the Earth
B. Ultraviolet radiation from sun
C. Solar flares
D. Radiation from distant stars
Answer» C. Solar flares
Discussion
9.

How does troposphere affect the satellite signals?

A. Reduces velocity
B. Reflects the signals
C. Refracts the signal
D. Bit inversion occurs
Answer» B. Reflects the signals
Discussion