{"id":273477,"date":"2025-07-27T13:37:59","date_gmt":"2025-07-27T13:37:59","guid":{"rendered":"https:\/\/learnexams.com\/blog\/?p=273477"},"modified":"2025-07-27T13:38:01","modified_gmt":"2025-07-27T13:38:01","slug":"figure-18-2-shows-a-carrier-wave-modified-by","status":"publish","type":"post","link":"https:\/\/www.learnexams.com\/blog\/2025\/07\/27\/figure-18-2-shows-a-carrier-wave-modified-by\/","title":{"rendered":"Figure 18-2 shows a carrier wave modified by"},"content":{"rendered":"\n<figure class=\"wp-block-image size-full\"><img decoding=\"async\" src=\"https:\/\/learnexams.com\/blog\/wp-content\/uploads\/2025\/07\/image-960.png\" alt=\"\" class=\"wp-image-273478\"\/><\/figure>\n\n\n\n<p><strong><mark style=\"background-color:rgba(0, 0, 0, 0)\" class=\"has-inline-color has-ast-global-color-1-color\">The Correct Answer and Explanation is:<\/mark><\/strong><\/p>\n\n\n\n<p>Based on the provided image where option A is selected, the correct answer is:<\/p>\n\n\n\n<p><strong>A. amplitude modulation<\/strong><\/p>\n\n\n\n<h3 class=\"wp-block-heading\">Explanation<\/h3>\n\n\n\n<p>Although the image provided does not show the actual &#8220;Figure 10-2,&#8221; the selected answer indicates that the figure illustrates a wave that has undergone amplitude modulation. This explanation will describe what such a figure would show.<\/p>\n\n\n\n<p>Modulation is the process of encoding information onto a carrier wave. A carrier wave is a high frequency wave that is well suited for transmission over long distances. The information to be sent, such as an audio or video signal, is called the modulating signal.<\/p>\n\n\n\n<p>In amplitude modulation, or AM, the amplitude of the carrier wave is varied in proportion to the modulating signal. The amplitude refers to the wave&#8217;s height or intensity. Imagine the carrier wave as a steady, high frequency signal. When an information signal is applied, the peaks and troughs of the carrier wave are made larger or smaller to match the shape of that information signal. A key visual characteristic of an AM wave is that its overall shape, or &#8220;envelope,&#8221; mirrors the original information signal. However, the frequency of the carrier wave, which is the spacing between the individual wave cycles, remains constant.<\/p>\n\n\n\n<p>This process is different from frequency modulation, or FM. In FM, the amplitude of the carrier wave remains constant, but its frequency is varied by the information signal. A loud part of an audio signal would cause the waves to become more compressed (higher frequency), while a quiet part would cause them to spread out (lower frequency).<\/p>\n\n\n\n<p>The term &#8220;velocity modulation&#8221; is less common in this context and typically relates to changing the speed of electrons in a beam, which is not a standard method for modifying radio waves. Therefore, if Figure 10-2 showed a wave with constant frequency but a varying height that traces the shape of another signal, it would be a clear depiction of amplitude modulation.<\/p>\n\n\n\n<figure class=\"wp-block-image size-full\"><img decoding=\"async\" src=\"https:\/\/learnexams.com\/blog\/wp-content\/uploads\/2025\/07\/learnexams-banner6-2293.jpeg\" alt=\"\" class=\"wp-image-273479\"\/><\/figure>\n","protected":false},"excerpt":{"rendered":"<p>The Correct Answer and Explanation is: Based on the provided image where option A is selected, the correct answer is: A. amplitude modulation Explanation Although the image provided does not show the actual &#8220;Figure 10-2,&#8221; the selected answer indicates that the figure illustrates a wave that has undergone amplitude modulation. This explanation will describe what [&hellip;]<\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"site-sidebar-layout":"default","site-content-layout":"","ast-site-content-layout":"default","site-content-style":"default","site-sidebar-style":"default","ast-global-header-display":"","ast-banner-title-visibility":"","ast-main-header-display":"","ast-hfb-above-header-display":"","ast-hfb-below-header-display":"","ast-hfb-mobile-header-display":"","site-post-title":"","ast-breadcrumbs-content":"","ast-featured-img":"","footer-sml-layout":"","ast-disable-related-posts":"","theme-transparent-header-meta":"","adv-header-id-meta":"","stick-header-meta":"","header-above-stick-meta":"","header-main-stick-meta":"","header-below-stick-meta":"","astra-migrate-meta-layouts":"default","ast-page-background-enabled":"default","ast-page-background-meta":{"desktop":{"background-color":"","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","overlay-gradient":""},"tablet":{"background-color":"","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","overlay-gradient":""},"mobile":{"background-color":"","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","overlay-gradient":""}},"ast-content-background-meta":{"desktop":{"background-color":"var(--ast-global-color-5)","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","overlay-gradient":""},"tablet":{"background-color":"var(--ast-global-color-5)","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","overlay-gradient":""},"mobile":{"background-color":"var(--ast-global-color-5)","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","overlay-gradient":""}},"footnotes":""},"categories":[25],"tags":[],"class_list":["post-273477","post","type-post","status-publish","format-standard","hentry","category-exams-certification"],"_links":{"self":[{"href":"https:\/\/www.learnexams.com\/blog\/wp-json\/wp\/v2\/posts\/273477","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/www.learnexams.com\/blog\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/www.learnexams.com\/blog\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/www.learnexams.com\/blog\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/www.learnexams.com\/blog\/wp-json\/wp\/v2\/comments?post=273477"}],"version-history":[{"count":0,"href":"https:\/\/www.learnexams.com\/blog\/wp-json\/wp\/v2\/posts\/273477\/revisions"}],"wp:attachment":[{"href":"https:\/\/www.learnexams.com\/blog\/wp-json\/wp\/v2\/media?parent=273477"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.learnexams.com\/blog\/wp-json\/wp\/v2\/categories?post=273477"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.learnexams.com\/blog\/wp-json\/wp\/v2\/tags?post=273477"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}