Radio theory the mix of an electromagnetic wave with another is called ? [ Study DJI ]

Question 69-1 : Interference diffraction refraction reflection

Radio theory the phenomenon of a change in direction of an radio wave em wave ?

Question 69-2 : Refraction absorption diffraction attenuation

Radio theory the phenomenon by which wave energy bends around a permeable ?

Question 69-3 : Diffraction refraction attenuation absorption

Radio theory vhf very high frequency waves appear in the frequency spectrum ?

Question 69-4 : 30 mhz 300 mhz 3 mhz 30 mhz 300 mhz 3000 mhz 3 ghz 30 ghz

Radio theory when the fading damping of a radio wave is so important that no ?

Question 69-5 : Absorption diffraction refraction reflection

Radio theory to double the effective range of a radio transmission the power ?

Question 69-6 : 4 2 8 16

Radio theory 'fading' is ?

Question 69-7 : Interference between surface wave and sky wave disappearance of the layer d at dusk reflection of waves on the ionosphere an abnormal increase in the amplitude of electromagnetic waves

Radio theory radio waves travel at ?

Question 69-8 : The speed of light the speed of sound a speed depending on the type of the electromagnetic waves a speed just below the speed of sound

Radio theory radio waves travel at a speed of ?

Question 69-9 : 300000 km/s 30000 km/s 300000 m/s 3000000 m/s

Radio theory a radio signal looses strength as range from the transmitter ?

Question 69-10 : Attenuation refraction propagation ducting

Radio theory an electromagnetic wave has two types of energy field ?

Question 69-11 : An e electrical field and h magnetic field an h electrical field and an e magnetic field a z electrical field and an h magnetic field a z magnetic field and an e electrical field

Radio theory an electromagnetic wave consists of an oscillating electric field ?

Question 69-12 : The e and h fields are perpendicular to each other a dipole antenna can only transmit field h the h field is parallel to the wire and field e is perpendicular to the wire when ac current pass through the antenna fields e and h are parallel

Radio theory an electromagnetic wave consists of an oscillating electric field ?

Question 69-13 : The speed of light the speed of sound for field e and the speed of light for field h the speed of light for field e and the speed of sound for field h the speed of sound

A position located east of the prime meridian and south of the equator is ?

Question 69-14 : East longitude and south latitude east longitude and north latitude north latitude and east longitude north longitude and south latitude

A vor vhf omnidirectional range is ?

Question 69-15 : A short range 360° navigation aid a distress beacon embedded on heavy drones the equivalent of gps a meteorological unit on particular aerodromes