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Aircraft Avionics Systems Exam 2025 Questions and Answers Two types of fields exist in a radio transmitting antenna to cause it to radiate electrical energy. They are: - ....ANSWER ...-An electric field, A magnetic field The higher the frequency, the_______ the wavelength. - ....ANSWER ...-Shorter The frequency of a radio transmission indicates the number of electromagnetic field_______ that occur in_____ second. - ....ANSWER ...-Oscillations, One Each oscillation is called a_______ and frequency is measured in_______ per second or_______. - ....ANSWER ...-Cycle, Cycles, Hertz(Hz) Radio waves travel at the speed of_______. - ....ANSWER ...-Light A_______ wave is necessary to transmit radio waves and antennas are usually_______ to _______ the length of the transmitted wave. - ....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_______. - ....ANSWER ...-Carrier, modulation There are two ways a radio carrier wave may be modulated; these are: ....ANSWER ...-Amplitude Modulation, Frequency Modulation …FOR STUDENTS ONLY…©️2025 ALL RIGHTS RESERVED… 1