{"id":2679,"date":"2024-08-24T20:12:48","date_gmt":"2024-08-24T20:12:48","guid":{"rendered":"https:\/\/workhouse.sweetdishy.com\/?p=2679"},"modified":"2024-08-24T20:12:49","modified_gmt":"2024-08-24T20:12:49","slug":"phase-and-phase-difference","status":"publish","type":"post","link":"https:\/\/workhouse.sweetdishy.com\/index.php\/2024\/08\/24\/phase-and-phase-difference\/","title":{"rendered":"PHASE AND PHASE DIFFERENCE"},"content":{"rendered":"\n<p id=\"para-288\">The phase of an alternating quantity (current or voltage) at an instant is defined as the fractional part of a cycle through which the quantity has advanced from a selected origin (Fig. 6.23). In actual practice, we are more concerned withthe phase difference between the two alternating quantities rather than their absolutephase.<\/p>\n\n\n\n<figure class=\"wp-block-image\"><img decoding=\"async\" src=\"https:\/\/learning.oreilly.com\/api\/v2\/epubs\/urn:orm:book:9789332558311\/files\/images\/page283_1.png\" alt=\"img\"\/><\/figure>\n\n\n\n<p id=\"para-289\"><strong>Fig. 6.23&nbsp;&nbsp;<\/strong>Phasor representation and its instantaneous value on the wave diagram<\/p>\n\n\n\n<p id=\"para-290\">The two alternating quantities having same frequency, when attain their zero value at different instants, the quantities are said to have a phase difference. This angle between zero points (and are becoming positive) of two alternating quantities is called angle of phase difference.<\/p>\n\n\n\n<p id=\"para-291\">In Figure 6.24, two alternating currents of magnitude&nbsp;<em>I<\/em><sub>m1<\/sub>&nbsp;and&nbsp;<em>I<\/em><sub>m2<\/sub>&nbsp;are shown vecto-rially. Both the vectors are rotating at same angular velocity of&nbsp;<em>\u03c9<\/em>&nbsp;radian per second. The zero values are obtained by the two currents at different instants. Therefore, they are said to have a phase difference of angle&nbsp;<em>\u0278<\/em>.<\/p>\n\n\n\n<figure class=\"wp-block-image\"><img decoding=\"async\" src=\"https:\/\/learning.oreilly.com\/api\/v2\/epubs\/urn:orm:book:9789332558311\/files\/images\/page283_2.png\" alt=\"img\"\/><\/figure>\n\n\n\n<p id=\"para-292\"><strong>Fig. 6.24&nbsp;&nbsp;<\/strong>Phasor and wave diagram of two ac quantities with phase difference<\/p>\n\n\n\n<p id=\"para-293\">In other words, the phase difference may be defined as the angular displacement between the maximum positive value of the two alternating quantities having the same frequency.<\/p>\n\n\n\n<p id=\"para-294\">The quantity that attains its positive maximum value prior to the other is called a\u2018leading quantity\u2019, whereas the quantity thatattains its positive maximum value after theother is called a \u2018lagging quantity\u2019. In this case, current&nbsp;<em>I<\/em><sub>m1<\/sub>&nbsp;is leading current with respect to&nbsp;<em>I<\/em><sub>m2<\/sub>&nbsp;or is other words current&nbsp;<em>I<\/em><sub>m2<\/sub>&nbsp;is the lagging current with respect to&nbsp;<em>I<\/em><sub>m1<\/sub>.<\/p>\n","protected":false},"excerpt":{"rendered":"<p>The phase of an alternating quantity (current or voltage) at an instant is defined as the fractional part of a cycle through which the quantity has advanced from a selected origin (Fig. 6.23). In actual practice, we are more concerned withthe phase difference between the two alternating quantities rather than their absolutephase. Fig. 6.23&nbsp;&nbsp;Phasor representation [&hellip;]<\/p>\n","protected":false},"author":1,"featured_media":2480,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[408],"tags":[],"class_list":["post-2679","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-ac-fundamentals"],"jetpack_featured_media_url":"https:\/\/workhouse.sweetdishy.com\/wp-content\/uploads\/2024\/08\/air-conditioner-1.png","_links":{"self":[{"href":"https:\/\/workhouse.sweetdishy.com\/index.php\/wp-json\/wp\/v2\/posts\/2679","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/workhouse.sweetdishy.com\/index.php\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/workhouse.sweetdishy.com\/index.php\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/workhouse.sweetdishy.com\/index.php\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/workhouse.sweetdishy.com\/index.php\/wp-json\/wp\/v2\/comments?post=2679"}],"version-history":[{"count":1,"href":"https:\/\/workhouse.sweetdishy.com\/index.php\/wp-json\/wp\/v2\/posts\/2679\/revisions"}],"predecessor-version":[{"id":2680,"href":"https:\/\/workhouse.sweetdishy.com\/index.php\/wp-json\/wp\/v2\/posts\/2679\/revisions\/2680"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/workhouse.sweetdishy.com\/index.php\/wp-json\/wp\/v2\/media\/2480"}],"wp:attachment":[{"href":"https:\/\/workhouse.sweetdishy.com\/index.php\/wp-json\/wp\/v2\/media?parent=2679"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/workhouse.sweetdishy.com\/index.php\/wp-json\/wp\/v2\/categories?post=2679"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/workhouse.sweetdishy.com\/index.php\/wp-json\/wp\/v2\/tags?post=2679"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}