What are the factors that affect signal propagation speed assuming no noise?

Aeronautical & Aerospace Engineering : Avionics - Quiz(MCQ)

Frequency of the signal

Wavelength of the signal

Strength of electrical and magnetic fields

Permeability and permittivity of medium

Correct Answer : Permeability and permittivity of medium

Explanation : Since the EM waves are made of electric and magnetic fields, the resistance given by the medium to conduct electric and magnetic waves determine the speed of the EM wave. This is given by the permeability and the permittivity of the medium.

Recently Updated in Avionics Questions

The maximum peaks of an electromagnetic wave are separated by a distance of 8 in. What is the frequency?

256.4Khz

256.7Mhz

1477.8Khz

1477.8Mhz

Correct Answer : Option (D) : 1477.8Mhz

Explanation : Wavelength =8 in.= 0.203 m
Frequency = 300/0.203 = 1477.8Mhz.

SHF Em waves are used in?

Underwater communication

Satellite communication

Aircraft to ATC communication

Ground to ground communication

Correct Answer : Option (B) : Satellite communication

Explanation : SHFs or Super High Frequency EM waves are those which lie between the frequency range of 3 to 30GHz range. These microwaves frequencies are widely used in satellite communication and radar.

Which one of the following is not a source of infrared radiation?

Sun

Books

Light bulbs

Human bodies

Correct Answer : Option (B) : Books

Explanation : Infrared radiation is generally associated with heat. Infrared is produced by light bulbs, human bodies, and basically any physical equipment that generates heat.