25 3-56.   Which of the following is/are an advantage of ssb transmission? 1.   The voice quality of ssb transmissions is superior to both AM and fm transmissions 2.   Ssb transmissions are not susceptible to interference caused by sun spots and atmospherics 3.   Ssb requires one-sixth of the output power and less than half the bandwidth required by AM to transmit the same amount of intelligence power 4.   All of the above 3-57.   In fm, the AMOUNT of frequency deviation (shift) is proportional to 1.   the frequency of the carrier 2.   the amplitude of the modulating signal 3.   the frequency of the modulating signal 4.   the plate current of the transmitter’s linear amplifier 3-58.   In fm, the RATE of frequency deviation (shift) is proportional to 1.   the impedance of the antenna 2.   the power output of the transmitter 3.   the amplitude of the modulating signal 4.   the frequency of the modulating signal 3-59.   When analyzing the composition of a rectangular wave with a spectrum analyzer, which of the following types of displays will you see? 1.   A fundamental frequency and its odd harmonics only 2.   A fundamental frequency and its even harmonics only 3.   A fundamental frequency and its combined even and odd harmonics 4.   An infinite number of fundamental frequencies 3-60.   The ability of a spectrum analyzer to resolve signals refers to its ability to 1.   distinguish one signal from other signals 2.   shape signals through the use of filters 3.   determine a receiver’s minimum discernible signal 4.   measure the frequency of a signal 3-61.   The ability of a spectrum analyzer to resolve signals is limited by which of the following factors? 1.   The amplitude of the signal under test 2.   The narrowest bandwith of the spectrum analyzer 3.   The upper frequency limits of the spectrum analyzer 4.   The lower frequency limits of the spectrum analyzer 3-62.   Which of the following characteristics of a transmission line fault can be observed using time-domain reflectometry? 1.   Nature of the fault 2.   Distance to the fault 3.   Both 1 and 2 above 4.   Figure of merit of the fault 3-63.   What is the primary application of swept- frequency testing? 1.   To determine the broadband frequency response of a device 2.   To determine the characteristics of a device at a specific frequency 3.   To determine the impedance of a transmission line 4.   To determine the swr of a transmission line