24 ASSIGNMENT 4 Textbook assignment: Chapter 4, “Antennas,” pages 4-1 through 4-60.   ___________________________________________________________________________________ 4-1.   Radio energy is transmitted through which of the following mediums? 1.  Rock 2.  Soil 3.  Water 4.  Space 4-2.   Energy is transmitted from a transmitter into space using which of the following devices? 1.  A receiver 2.  A delay line 3.  A receiving antenna 4.  A transmitting antenna 4-3.   Transmitted rf energy takes what form as it is sent into space? 1.  A magnetic field only 2.  An electric field only 3.  An electromagnetic field 4.  A static dielectric field 4-4.   The dimensions of a transmitting antenna are determined by which of the following factors? 1.  Transmitted power 2.  Transmitted frequency 3.  Distance to the receiver 4.  Antenna height above the ground 4-5.   A device used to radiate or receive electromagnetic wave energy is referred to as a/an 1.  feeder 2.  antenna 3.  transmitter 4.  coupling device 4-6.   An antenna that can be mounted to radiate rf energy either vertically or horizontally is classified as which of the following types? 1.  Hertz 2.  Marconi 3.  Quarter-wave 4.  Both 2 and 3 above 4-7.   A complete antenna system consists of which of the following components? 1.  A feeder, a coupling device, and a transmitter 2.  A feeder line, a coupling device, and an antenna 3.  An antenna, a transmission line, and a receiver 4.  An impedance-matching device, a feeder, and a transmission line 4-8.   What component in an antenna system transfers energy from the transmitter to the antenna? 1.  A feeder 2.  A delay line 3.  A choke joint 4.  A rotating joint 4-9.   The type, size, and shape of an antenna are determined by which of the following factors? 1.  Power output of the transmitter 2.  Transmitter frequency 3.  Direction to the receiver 4.  Each of the above