{"id":7289,"date":"2024-04-15T02:42:32","date_gmt":"2024-04-15T02:42:32","guid":{"rendered":"https:\/\/exam.pscnotes.com\/mcq\/?p=7289"},"modified":"2024-04-15T02:42:32","modified_gmt":"2024-04-15T02:42:32","slug":"select-the-incorrect-statement-a-the-pressure-intensity-at-vena-contracta-is-atmospheric-b-contraction-is-least-at-vena-contracta-c-stream-lines-are-parallel-throughout-the-jet-at-vena-contracta-d","status":"publish","type":"post","link":"https:\/\/exam.pscnotes.com\/mcq\/select-the-incorrect-statement-a-the-pressure-intensity-at-vena-contracta-is-atmospheric-b-contraction-is-least-at-vena-contracta-c-stream-lines-are-parallel-throughout-the-jet-at-vena-contracta-d\/","title":{"rendered":"Select the incorrect statement. A. The pressure intensity at vena contracta is atmospheric B. Contraction is least at vena contracta C. Stream lines are parallel throughout the jet at vena contracta D. Coefficient of contraction is always less than one"},"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_6a985e89a6b11\">\r\n                                            <div class=\"option\" data-option-key=\"option1\" data-is-correct=\"true\">\r\n                    The pressure intensity at vena contracta is atmospheric                <\/div>\r\n                                            <div class=\"option\" data-option-key=\"option2\" data-is-correct=\"false\">\r\n                    Contraction is least at vena contracta                <\/div>\r\n                                            <div class=\"option\" data-option-key=\"option3\" data-is-correct=\"false\">\r\n                    Stream lines are parallel throughout the jet at vena contracta                <\/div>\r\n                                            <div class=\"option\" data-option-key=\"option4\" data-is-correct=\"false\">\r\n                    Coefficient of contraction is always less than one                <\/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: A. The pressure intensity at vena contracta is atmospheric.<\/p>\n<p>Vena contracta is the minimum cross-sectional area of a fluid jet in a converging-diverging nozzle. The pressure at vena contracta is always less than atmospheric pressure. This is because the fluid accelerates as it flows through the nozzle, and the acceleration of a fluid is accompanied by a decrease in pressure.<\/p>\n<p>The coefficient of contraction is a dimensionless number that is used to characterize the contraction of a fluid jet. It is defined as the ratio of the minimum cross-sectional area of the jet (at vena contracta) to the cross-sectional area of the nozzle at the throat. The coefficient of contraction is always less than one, and its value depends on the shape of the nozzle.<\/p>\n<p>Streamlines are lines that are <div class=\"youtube-subscribe-container\">\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>      <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> tangent to the velocity vectors of a fluid. In a converging-diverging nozzle, the streamlines are parallel throughout the jet at vena contracta. This is because the velocity of the fluid is the highest at vena contracta, and the fluid particles are moving in straight lines.<\/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":[648],"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>Select the incorrect statement. A. The pressure intensity at vena contracta is atmospheric B. Contraction is least at vena contracta C. Stream lines are parallel throughout the jet at vena contracta D. 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