• Home
  • Download PDF
  • Order CD-ROM
  • Order in Print
Assignment Questions - 14030_326
Assignment Questions - 14030_328

Aviation Electronics Technician 1 (Organizational)
Page Navigation
  301    302    303    304    305  306  307    308    309  
10-23. At which of the following frequencies is atmospheric static most critical? 1. 500 kHz 2. 25 MHz 3. 50 MHZ 4. 500 MHz 10-24. Precipitation static is a severe problem in which of the following frequency bands? 1. Low only 2. Medium only 3. Low and medium 4. Ultra high 10-25. Cosmic noise is normally heard in which of the following frequency bands? 1. Low only 2. Medium only 3. Low and medium 4. Ultra high 10-26. Which of the following is a typical source of sustained switching transients? 1. Receivers 2. Transmitters 3. Synchronizers 4. Generators 10-27. Broadband random noise consists of impulses that have which of the following characteristics? 1. Regular in shape and recurrence rate 2. Irregular in shape and duration 3. Constant in voltage and duration only 4. Constant in voltage, duration, shape, and recurrence rate 10-28. A circuit or device that carries a varying electrical current is a potential source of receiver interference. 1. True 2. False 10-29. What type of dc motor, if any, is more apt to cause interference (noise) in a radio receiver? 1. Permanent magnet 2. Series wound 3. Shunt wound 4. None 10-30. The control circuit of a relay may cause more interference than the higher powered circuit being controlled by the relay. 1. True 2. False 10-31. Radio interference from operating radar is most likely caused by which of the following circuits? 1. Indicator 2. Modulator 3. Receiver 4. Synchronizer 10-32. In the tuning band of a receiver, oscillator leakage is the greatest at which of the following points? 1. Both the high and low ends 2. The low end 3. The middle range 4. The high end 10-33. If a receiver has an operating frequency of 150 MHz and an IF of 20 MHz. what is the oscillator leakage frequency? 1. 20 MHz or 150 MHz 2. 120 MHz or 150 MHz 3. 130 MHz or 170 MHz 4. 150 MHz or 170 MHz 10-34. Radio interference is caused by a cold-solder joint for which of the following reasons? 1. Its reactance varies with applied voltage 2. Its resistance varies with applied voltage 3. Its capacitance varies inversely with frequency 4. Its inductance varies with frequency 67







Western Governors University

Privacy Statement
Press Release
Contact

© Copyright Integrated Publishing, Inc.. All Rights Reserved. Design by Strategico.