Aircraft Avionics Systems UPDATED
ACTUAL Exam Questions and CORRECT
Answers
Two types of fields exist in a radio transmitting antenna to cause it to radiate electrical energy.
They are: - CORRECT ANSWER - An electric field, A magnetic field
The higher the frequency, the_______ the wavelength. - CORRECT ANSWER - Shorter
The frequency of a radio transmission indicates the number of electromagnetic field_______ that
occur in_____ second. - CORRECT ANSWER - Oscillations, One
Each oscillation is called a_______ and frequency is measured in_______ per second
or_______. - CORRECT ANSWER - Cycle, Cycles, Hertz(Hz)
Radio waves travel at the speed of_______. - CORRECT ANSWER - Light
A_______ wave is necessary to transmit radio waves and antennas are usually_______ to
_______ the length of the transmitted wave. - CORRECT ANSWER - Carrier, one-quarter to
one-half
In order to transmit information, the_______ wave must be altered in some way and this
alteration is called_______. - CORRECT ANSWER - Carrier, modulation
There are two ways a radio carrier wave may be modulated; these are: - CORRECT
ANSWER - Amplitude Modulation, Frequency Modulation
_______ waves bounce off the ionosphere and can be used to achieve_______-_______ radio
transmissions. - CORRECT ANSWER - Sky, long-range
, The three basic functions of every radio transmitter are: - CORRECT ANSWER - A. Generate
a signal at the correct frequency, B. Modulate the carrier wave, C.Amplify the signal
The component that generates the carrier wave at the correct frequency is called_______. -
CORRECT ANSWER - Oscillator
A component found in both transmitter and receivers whose function is to increase the strength
of signal is called a_______. - CORRECT ANSWER - Amplifier
The length of a transmitting antenna is determined by the frequency(wavelength) for which the
antenna is used. The higher the frequency, the_______ the antenna. - CORRECT ANSWER -
Shorter
A half-wave antenna may also be referred to as a_______ antenna. - CORRECT ANSWER -
Hertz dipole
The metal surrounding the base of a Marconi monopole antenna is called the_______. -
CORRECT ANSWER - Ground plane
Aircraft VHF communications antennas are_______ polarized. - CORRECT ANSWER -
Vertically
A_______ circuit is used to isolate the desired frequency from all the frequencies intercepted by
an antenna. - CORRECT ANSWER - Tuning
High Frequency(HF) radios are most commonly used by large aircraft for_______ Air Traffic
Control communications. - CORRECT ANSWER - Oceanic
Most civilian aviation radio communication is done in the_______ frequency range. -
CORRECT ANSWER - VHF
ACTUAL Exam Questions and CORRECT
Answers
Two types of fields exist in a radio transmitting antenna to cause it to radiate electrical energy.
They are: - CORRECT ANSWER - An electric field, A magnetic field
The higher the frequency, the_______ the wavelength. - CORRECT ANSWER - Shorter
The frequency of a radio transmission indicates the number of electromagnetic field_______ that
occur in_____ second. - CORRECT ANSWER - Oscillations, One
Each oscillation is called a_______ and frequency is measured in_______ per second
or_______. - CORRECT ANSWER - Cycle, Cycles, Hertz(Hz)
Radio waves travel at the speed of_______. - CORRECT ANSWER - Light
A_______ wave is necessary to transmit radio waves and antennas are usually_______ to
_______ the length of the transmitted wave. - CORRECT ANSWER - Carrier, one-quarter to
one-half
In order to transmit information, the_______ wave must be altered in some way and this
alteration is called_______. - CORRECT ANSWER - Carrier, modulation
There are two ways a radio carrier wave may be modulated; these are: - CORRECT
ANSWER - Amplitude Modulation, Frequency Modulation
_______ waves bounce off the ionosphere and can be used to achieve_______-_______ radio
transmissions. - CORRECT ANSWER - Sky, long-range
, The three basic functions of every radio transmitter are: - CORRECT ANSWER - A. Generate
a signal at the correct frequency, B. Modulate the carrier wave, C.Amplify the signal
The component that generates the carrier wave at the correct frequency is called_______. -
CORRECT ANSWER - Oscillator
A component found in both transmitter and receivers whose function is to increase the strength
of signal is called a_______. - CORRECT ANSWER - Amplifier
The length of a transmitting antenna is determined by the frequency(wavelength) for which the
antenna is used. The higher the frequency, the_______ the antenna. - CORRECT ANSWER -
Shorter
A half-wave antenna may also be referred to as a_______ antenna. - CORRECT ANSWER -
Hertz dipole
The metal surrounding the base of a Marconi monopole antenna is called the_______. -
CORRECT ANSWER - Ground plane
Aircraft VHF communications antennas are_______ polarized. - CORRECT ANSWER -
Vertically
A_______ circuit is used to isolate the desired frequency from all the frequencies intercepted by
an antenna. - CORRECT ANSWER - Tuning
High Frequency(HF) radios are most commonly used by large aircraft for_______ Air Traffic
Control communications. - CORRECT ANSWER - Oceanic
Most civilian aviation radio communication is done in the_______ frequency range. -
CORRECT ANSWER - VHF
