2 1-9.   The frequency of the sine wave is determined by which of the following sine-wave factors? 1.   The maximum voltage 2.   The rate at which the vector rotates 3.   The number of degrees of vector rotation 4.   Each of the above 1-10.   Which of the following mathematical relationships do you use to figure the period of a sine wave? 1. 3. 2. 4. 1-11.   Which of the following Greek letters is the symbol for wavelength? 1. q 2. J 3. l 4. w 1-12.   Which of the following waveform characteristics determines the wavelength of a sine wave? 1.   Phase 2.   Period 3.   Amplitude 4.   Phase Angle 1-13.   An electromagnetic wavefront moves through free space at approximately what speed in meters per second? 1.          3,000,000 2.        30,000,000 3.      300,000,000 4. 3,000,000,000 1-14.   What is the wavelength of a 1.5 MHz frequency? 1.   100 meters 2.   200 meters 3.   300 meters 4.   400 meters 1-15.   As the frequency of a signal is increased, what change can be noted about its wavelength? 1.   It decreases 2.   It increases 3.   It remains the same 1-16.   The ability of a circuit to faithfully reproduce the input signal in the output is known by what term? 1.   Fidelity 2.   Fluctuation 3.   Directivity 4.   Discrimination 1-17.   In rf communications, modulation impresses information on which of the following types of waves? 1.   Carrier wave 2.   Complex wave 3.   Modulated wave 4.   Modulating wave 1-18.   Which of the following types of modulation is a form of amplitude modulation? 1.   Angle 2.   Phase 3.   Frequency 4.   Continuous-wave