{"id":46774,"date":"2024-04-15T22:17:11","date_gmt":"2024-04-15T22:17:11","guid":{"rendered":"https:\/\/exam.pscnotes.com\/mcq\/?p=46774"},"modified":"2024-04-15T22:17:11","modified_gmt":"2024-04-15T22:17:11","slug":"when-measuring-the-characteristics-of-a-small-signal-amplifier-say-for-a-radio-receiver-one-might-be-concerned-with-its-noise","status":"publish","type":"post","link":"https:\/\/exam.pscnotes.com\/mcq\/when-measuring-the-characteristics-of-a-small-signal-amplifier-say-for-a-radio-receiver-one-might-be-concerned-with-its-noise\/","title":{"rendered":"When measuring the characteristics of a small-signal amplifier, say for a radio receiver, one might be concerned with its &#8220;Noise&#8230;&#8221;?"},"content":{"rendered":"<p>\r\n    <!-- Check if it's an AMP page -->\r\n            <!-- Non-AMP version -->\r\n        <div class=\"mcq-container\" data-quiz-id=\"quizState_6a97d750133c1\">\r\n                                            <div class=\"option\" data-option-key=\"option1\" data-is-correct=\"true\">\r\n                    Fundamental                <\/div>\r\n                                            <div class=\"option\" data-option-key=\"option2\" data-is-correct=\"false\">\r\n                    Fall                <\/div>\r\n                                            <div class=\"option\" data-option-key=\"option3\" data-is-correct=\"false\">\r\n                    Force                <\/div>\r\n                                            <div class=\"option\" data-option-key=\"option4\" data-is-correct=\"false\">\r\n                    Figure                <\/div>\r\n                            \r\n            <!-- Feedback messages for non-AMP -->\r\n            <div class=\"feedback\" data-feedback=\"wrong\">Answer is Right!<\/div>\r\n            <div class=\"feedback\" data-feedback=\"right\">Answer is Wrong!<\/div>\r\n        <\/div>\r\n\r\n        <script>\r\n        document.addEventListener('DOMContentLoaded', function () {\r\n            var containers = document.querySelectorAll('.mcq-container');\r\n\r\n            containers.forEach(function(container) {\r\n                var options = container.querySelectorAll('.option');\r\n                var feedbackSelect = container.querySelector('[data-feedback=\"select\"]');\r\n                var feedbackWrong = container.querySelector('[data-feedback=\"wrong\"]');\r\n                var feedbackRight = container.querySelector('[data-feedback=\"right\"]');\r\n\r\n                options.forEach(function(option) {\r\n                    option.addEventListener('click', function() {\r\n                        var selectedOption = option.getAttribute('data-option-key');\r\n                        var isCorrect = option.getAttribute('data-is-correct') === 'true';\r\n\r\n                        \/\/ Remove previous selections\r\n                        options.forEach(function(opt) {\r\n                            opt.classList.remove('correct', 'incorrect');\r\n                        });\r\n\r\n                        \/\/ Add the correct\/incorrect class\r\n                        if (isCorrect) {\r\n                            option.classList.add('correct');\r\n                            feedbackRight.hidden = false;\r\n                            feedbackWrong.hidden = true;\r\n                        } else {\r\n                            option.classList.add('incorrect');\r\n                            feedbackRight.hidden = true;\r\n                            feedbackWrong.hidden = false;\r\n                        }\r\n\r\n                        \/\/ Hide select feedback\r\n                        feedbackSelect.hidden = true;\r\n                    });\r\n                });\r\n            });\r\n        });\r\n        <\/script>\r\n    \r\n    <!--more--><\/p>\n<p>The correct answer is <strong>Noise Figure<\/strong>.<\/p>\n<p>Noise figure is a measure of the degradation in signal-to-noise ratio (SNR) caused by an electronic device. It is defined as the ratio of the SNR at the output of the device to the SNR at the input of the device, in a noiseless environment.<\/p>\n<p>Noise figure is typically expressed in decibels (dB). A noise figure of 0 dB indicates that there is no degradation in SNR, while a noise figure of 3 dB indicates that the SNR has been degraded by 3 dB.<\/p>\n<p>Noise figure is an important parameter for electronic devices that amplify signals, such as amplifiers, mixers, and receivers. It is also important for devices that generate signals, such as oscillators and voltage references.<\/p>\n<p>The noise figure of an electronic device is determined by a number of factors, including the type <div class=\"youtube-subscribe-container\">\r\n        <a href=\"https:\/\/www.youtube.com\/channel\/UCNHT8lW-JmLC68rjBfZhdkg?sub_confirmation=1\" target=\"_blank\" class=\"youtube-subscribe-button\">\r\n            <span class=\"youtube-icon\">\r\n                <svg xmlns=\"http:\/\/www.w3.org\/2000\/svg\" viewBox=\"0 0 576 512\">\r\n                    <path d=\"M549.7 124.1c-6.3-23.7-24.8-42.3-48.3-48.6C458.8 64 288 64 288 64S117.2 64 74.6 75.5c-23.5 6.3-42 24.9-48.3 48.6-11.4 42.9-11.4 132.3-11.4 132.3s0 89.4 11.4 132.3c6.3 23.7 24.8 41.5 48.3 47.8C117.2 448 288 448 288 448s170.8 0 213.4-11.5c23.5-6.3 42-24.2 48.3-47.8 11.4-42.9 11.4-132.3 11.4-132.3s0-89.4-11.4-132.3zm-317.5 213.5V175.2l142.7 81.2-142.7 81.2z\"\/>\r\n                <\/svg>\r\n            <\/span>\r\n            Subscribe on YouTube\r\n        <\/a>\r\n    <\/div> of device, the quality of the components, and the operating conditions.<\/p>\n<p>There are a number of ways to reduce the noise figure of an electronic device. <div class=\"telegram-channel-container\">\r\n        <a href=\"https:\/\/t.me\/pscnotes2025\" target=\"_blank\" class=\"telegram-channel-button\">\r\n            <span class=\"telegram-icon\">\r\n                <svg xmlns=\"http:\/\/www.w3.org\/2000\/svg\" viewBox=\"0 0 496 512\">\r\n                    <path fill=\"white\" d=\"M248,8C111,8,0,119,0,256s111,248,248,248s248-111,248-248S385,8,248,8z M362,177L320,367c-3,14-10,18-20,14l-56-41l-27,26 c-3,3-5,5-10,5l4-63L323,196c5-5-1-7-8-3l-98,62l-42-13c-9-3-10-9,2-14l162-63C351,160,365,164,362,177z\"\/>\r\n                <\/svg>\r\n            <\/span>\r\n            Join Our Telegram Channel\r\n        <\/a>\r\n    <\/div> One way is to use high-quality components. Another way is to operate the device at a lower temperature. Finally, it is sometimes possible to reduce the noise figure by using a different circuit design.<\/p>\n<p>Noise figure is an important parameter for electronic devices that amplify or generate signals. It is determined by a number of factors, including the type of device, the quality of the components, and the operating conditions. There are a number of ways to reduce the noise figure of an electronic device, including using high-quality components, operating the device at a lower temperature, and using a different circuit design.<\/p>\n<p>The other options are not correct because they do not describe a measure of the degradation in signal-to-noise ratio (SNR) caused by an electronic device.<\/p>\n","protected":false},"excerpt":{"rendered":"<p>Subscribe on YouTube<\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"closed","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[80],"tags":[],"yoast_head":"<!-- This site is optimized with the Yoast SEO Premium plugin v22.2 (Yoast SEO v23.3) - https:\/\/yoast.com\/wordpress\/plugins\/seo\/ -->\n<title>When measuring the characteristics of a small-signal amplifier, say for a radio receiver, one might be concerned with its &quot;Noise...&quot;?<\/title>\n<meta name=\"robots\" content=\"index, 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