{"id":201250,"date":"2025-03-15T06:54:59","date_gmt":"2025-03-15T06:54:59","guid":{"rendered":"https:\/\/learnexams.com\/blog\/?p=201250"},"modified":"2025-03-15T06:55:02","modified_gmt":"2025-03-15T06:55:02","slug":"person-would-like-to-install-a-device-in-his-house-which-turns-a-light-on-when-the-pressure-is-between-0-75-and-1-atmospheres-atm","status":"publish","type":"post","link":"https:\/\/www.learnexams.com\/blog\/2025\/03\/15\/person-would-like-to-install-a-device-in-his-house-which-turns-a-light-on-when-the-pressure-is-between-0-75-and-1-atmospheres-atm\/","title":{"rendered":"person would like to install a device in his house which turns a light on when the pressure is between 0.75 and 1 atmospheres (ATM)"},"content":{"rendered":"\n<p>person would like to install a device in his house which turns a light on when the pressure is between 0.75 and 1 atmospheres (ATM), and sounds a warning signal when the outside pressure is 0.75 ATM or below. The light and the sound will never go off simultaneously. Write a solution to this problem.<\/p>\n\n\n\n<p><mark style=\"background-color:rgba(0, 0, 0, 0)\" class=\"has-inline-color has-ast-global-color-6-color\"><strong>The correct answer and explanation is :<\/strong><\/mark><\/p>\n\n\n\n<p>To solve the problem of controlling a light and a warning signal based on atmospheric pressure, we need to design a system that performs two tasks:<\/p>\n\n\n\n<ol class=\"wp-block-list\">\n<li><strong>Turn on the light when the atmospheric pressure is between 0.75 and 1 ATM<\/strong>.<\/li>\n\n\n\n<li><strong>Sound the warning signal when the atmospheric pressure is 0.75 ATM or lower<\/strong>.<\/li>\n\n\n\n<li><strong>Ensure that the light and the warning signal never turn on at the same time<\/strong>.<\/li>\n<\/ol>\n\n\n\n<h3 class=\"wp-block-heading\">Solution Approach<\/h3>\n\n\n\n<p>The problem can be solved using a pressure sensor that measures the atmospheric pressure. The sensor&#8217;s readings will be used to control the light and warning signal. We will use simple conditional logic to handle the transitions between the light and the warning signal.<\/p>\n\n\n\n<h4 class=\"wp-block-heading\">Step-by-step Process:<\/h4>\n\n\n\n<ol class=\"wp-block-list\">\n<li><strong>Sensor Input<\/strong>: The system will use a pressure sensor that continuously monitors the atmospheric pressure.<\/li>\n\n\n\n<li><strong>Pressure Conditions<\/strong>:<\/li>\n<\/ol>\n\n\n\n<ul class=\"wp-block-list\">\n<li>If the pressure is between 0.75 and 1.0 ATM (inclusive), <strong>turn the light on<\/strong>.<\/li>\n\n\n\n<li>If the pressure is <strong>0.75 ATM or lower<\/strong>, <strong>activate the warning signal<\/strong>.<\/li>\n<\/ul>\n\n\n\n<ol class=\"wp-block-list\">\n<li><strong>Exclusive Operation<\/strong>: To ensure the light and the warning signal never turn on simultaneously, we can use a <strong>mutual exclusion<\/strong> logic:<\/li>\n<\/ol>\n\n\n\n<ul class=\"wp-block-list\">\n<li>If the light is on (pressure between 0.75 and 1.0 ATM), the warning signal is off.<\/li>\n\n\n\n<li>If the pressure is 0.75 ATM or lower, the warning signal is activated and the light is turned off.<\/li>\n<\/ul>\n\n\n\n<h4 class=\"wp-block-heading\">Detailed Algorithm:<\/h4>\n\n\n\n<ul class=\"wp-block-list\">\n<li><strong>Pressure Reading<\/strong>:<\/li>\n\n\n\n<li>Measure the current atmospheric pressure.<\/li>\n\n\n\n<li>If pressure is <strong>between 0.75 and 1.0 ATM<\/strong>, <strong>turn on the light<\/strong> and <strong>turn off the warning signal<\/strong>.<\/li>\n\n\n\n<li>If pressure is <strong>below or equal to 0.75 ATM<\/strong>, <strong>turn off the light<\/strong> and <strong>activate the warning signal<\/strong>.<\/li>\n<\/ul>\n\n\n\n<p>This system ensures that:<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li>When the pressure is within the safe range (between 0.75 and 1.0 ATM), the light is illuminated.<\/li>\n\n\n\n<li>When the pressure drops to 0.75 ATM or below, the light goes off and the warning signal is triggered to alert about the low-pressure situation.<\/li>\n<\/ul>\n\n\n\n<h3 class=\"wp-block-heading\">Hardware Requirements:<\/h3>\n\n\n\n<ul class=\"wp-block-list\">\n<li><strong>Pressure Sensor<\/strong>: To detect the atmospheric pressure.<\/li>\n\n\n\n<li><strong>Relay\/Control Module<\/strong>: To switch the light and warning signal based on the pressure reading.<\/li>\n\n\n\n<li><strong>Microcontroller (e.g., Arduino\/Raspberry Pi)<\/strong>: To handle the logic for turning the light and the warning signal on and off.<\/li>\n<\/ul>\n\n\n\n<h3 class=\"wp-block-heading\">Conclusion:<\/h3>\n\n\n\n<p>This system uses simple logic to ensure that the light and warning signal never conflict, providing a clear, intuitive solution for monitoring atmospheric pressure.<\/p>\n","protected":false},"excerpt":{"rendered":"<p>person would like to install a device in his house which turns a light on when the pressure is between 0.75 and 1 atmospheres (ATM), and sounds a warning signal when the outside pressure is 0.75 ATM or below. The light and the sound will never go off simultaneously. Write a solution to this problem. [&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-201250","post","type-post","status-publish","format-standard","hentry","category-exams-certification"],"_links":{"self":[{"href":"https:\/\/www.learnexams.com\/blog\/wp-json\/wp\/v2\/posts\/201250","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=201250"}],"version-history":[{"count":0,"href":"https:\/\/www.learnexams.com\/blog\/wp-json\/wp\/v2\/posts\/201250\/revisions"}],"wp:attachment":[{"href":"https:\/\/www.learnexams.com\/blog\/wp-json\/wp\/v2\/media?parent=201250"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.learnexams.com\/blog\/wp-json\/wp\/v2\/categories?post=201250"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.learnexams.com\/blog\/wp-json\/wp\/v2\/tags?post=201250"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}