{"id":7902,"date":"2024-04-15T02:52:06","date_gmt":"2024-04-15T02:52:06","guid":{"rendered":"https:\/\/exam.pscnotes.com\/mcq\/?p=7902"},"modified":"2024-04-15T02:52:06","modified_gmt":"2024-04-15T02:52:06","slug":"an-aircraft-is-flying-in-an-atmosphere-of-30ac-with-a-speed-of-1260-kmph-its-speed-is-known-as-a-subsonic-b-sonic-c-super-sonic-d-mach","status":"publish","type":"post","link":"https:\/\/exam.pscnotes.com\/mcq\/an-aircraft-is-flying-in-an-atmosphere-of-30ac-with-a-speed-of-1260-kmph-its-speed-is-known-as-a-subsonic-b-sonic-c-super-sonic-d-mach\/","title":{"rendered":"An aircraft is flying in an atmosphere of 30\u00c2\u00b0C with a speed of 1260 kmph. Its speed is known as A. Subsonic B. Sonic C. Super-sonic D. Mach"},"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_6a9921a16252d\">\r\n                                            <div class=\"option\" data-option-key=\"option1\" data-is-correct=\"true\">\r\n                    Subsonic                <\/div>\r\n                                            <div class=\"option\" data-option-key=\"option2\" data-is-correct=\"false\">\r\n                    Sonic                <\/div>\r\n                                            <div class=\"option\" data-option-key=\"option3\" data-is-correct=\"false\">\r\n                    Super-sonic                <\/div>\r\n                                            <div class=\"option\" data-option-key=\"option4\" data-is-correct=\"false\">\r\n                    Mach                <\/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>Subsonic<\/strong>.<\/p>\n<p>Subsonic speed is the speed of an object that is slower than the speed of sound in the surrounding medium. The speed of sound in air at 30\u00c2\u00b0C is 343 meters <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    <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>         <\/span>\r\n            Subscribe on YouTube\r\n        <\/a>\r\n    <\/div> per second, or 1225 kilometers per hour. Therefore, an aircraft flying at a speed of 1260 kilometers per hour is flying at subsonic speed.<\/p>\n<p>Sonic speed is the speed of sound in a particular medium. The speed of sound in air at 30\u00c2\u00b0C is 343 meters per second, or 1225 kilometers per hour.<\/p>\n<p>Supersonic speed is the speed of an object that is faster than the speed of sound in the surrounding medium. An aircraft flying at a speed of 1260 kilometers per hour is not flying at supersonic speed.<\/p>\n<p>Mach is a unit of measurement for speed equal to the speed of sound in a particular medium. The speed of sound in air at 30\u00c2\u00b0C is 343 meters per second, or 1225 kilometers per hour. Therefore, an aircraft flying at a speed of 1260 kilometers per hour is flying at Mach 0.93.<\/p>\n","protected":false},"excerpt":{"rendered":"<p>Join Our Telegram Channel 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":[651],"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>An aircraft is flying in an atmosphere of 30\u00c2\u00b0C with a speed of 1260 kmph. Its speed is known as A. Subsonic B. Sonic C. Super-sonic D. 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