EET029_Quiz_4 - EET 029 - Introduction to Communications...

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University Diploma Programs Electronic Equipment Maintenance EET-029: Introduction to Communications Quiz # 4 Name : ________________________________ ID #: ___________ 1. Indicate the false statement regarding the Armstrong modulation system: (a) The system is basically phase, not frequency, modulation (b) AFC is not needed, as a crystal oscillator is used (c) Frequency multiplication must be used (d) Equalization is unnecessary 2. An FM signal with a modulation index m f passed through a frequency tripler. The wave in the output of the tripler will have a modulation index of: (a) m f / 3 (b) m f (c) 3 m f (d) 9 m f 3. Since noise phase-modulates the FM wave, as the noise sideband frequency approaches the carrier frequency, the noise amplitude: (a) Remains constant (b) Is decreased (c) Is increased (d) In equalized 4. One of the following is an indirect way of generating FM. This is the: (a) Reactance FET modulator (b) Varactor diode modulator (c) Armstrong modulator (d) Reactance bipolar transistor modulator
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This note was uploaded on 10/28/2009 for the course ELECTRICAL EET 029 taught by Professor Prof.khan during the Spring '09 term at King Fahd University of Petroleum & Minerals.

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EET029_Quiz_4 - EET 029 - Introduction to Communications...

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