{"id":10894,"date":"2021-09-15T11:00:55","date_gmt":"2021-09-15T19:00:55","guid":{"rendered":"https:\/\/www.linquip.com\/blog\/?p=10894"},"modified":"2022-12-25T04:15:17","modified_gmt":"2022-12-25T12:15:17","slug":"efficiency-of-induction-motor","status":"publish","type":"post","link":"https:\/\/www.linquip.com\/blog\/efficiency-of-induction-motor\/","title":{"rendered":"Efficiency of Induction Motor: Calculation &#038; Equation"},"content":{"rendered":"<div id=\"ez-toc-container\" class=\"ez-toc-v2_0_82_2 counter-hierarchy ez-toc-counter ez-toc-grey ez-toc-container-direction\">\n<div class=\"ez-toc-title-container\">\n<p class=\"ez-toc-title\" style=\"cursor:inherit\">Table of Contents<\/p>\n<span class=\"ez-toc-title-toggle\"><a href=\"#\" class=\"ez-toc-pull-right ez-toc-btn ez-toc-btn-xs ez-toc-btn-default ez-toc-toggle\" aria-label=\"Toggle Table of Content\"><span class=\"ez-toc-js-icon-con\"><span class=\"\"><span class=\"eztoc-hide\" style=\"display:none;\">Toggle<\/span><span class=\"ez-toc-icon-toggle-span\"><svg style=\"fill: #999;color:#999\" xmlns=\"http:\/\/www.w3.org\/2000\/svg\" class=\"list-377408\" width=\"20px\" height=\"20px\" viewBox=\"0 0 24 24\" fill=\"none\"><path d=\"M6 6H4v2h2V6zm14 0H8v2h12V6zM4 11h2v2H4v-2zm16 0H8v2h12v-2zM4 16h2v2H4v-2zm16 0H8v2h12v-2z\" fill=\"currentColor\"><\/path><\/svg><svg style=\"fill: #999;color:#999\" class=\"arrow-unsorted-368013\" xmlns=\"http:\/\/www.w3.org\/2000\/svg\" width=\"10px\" height=\"10px\" viewBox=\"0 0 24 24\" version=\"1.2\" baseProfile=\"tiny\"><path d=\"M18.2 9.3l-6.2-6.3-6.2 6.3c-.2.2-.3.4-.3.7s.1.5.3.7c.2.2.4.3.7.3h11c.3 0 .5-.1.7-.3.2-.2.3-.5.3-.7s-.1-.5-.3-.7zM5.8 14.7l6.2 6.3 6.2-6.3c.2-.2.3-.5.3-.7s-.1-.5-.3-.7c-.2-.2-.4-.3-.7-.3h-11c-.3 0-.5.1-.7.3-.2.2-.3.5-.3.7s.1.5.3.7z\"\/><\/svg><\/span><\/span><\/span><\/a><\/span><\/div>\n<nav><ul class='ez-toc-list ez-toc-list-level-1 ' ><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-1\" href=\"https:\/\/www.linquip.com\/blog\/efficiency-of-induction-motor\/#Power_Transfer_Stages_of_Induction_Motor\" >Power Transfer Stages of Induction Motor<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-2\" href=\"https:\/\/www.linquip.com\/blog\/efficiency-of-induction-motor\/#Types_of_Losses\" >Types of Losses<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-3\" href=\"https:\/\/www.linquip.com\/blog\/efficiency-of-induction-motor\/#Efficiency_of_Three-Phase_Induction_Motor\" >Efficiency of Three-Phase Induction Motor<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-4\" href=\"https:\/\/www.linquip.com\/blog\/efficiency-of-induction-motor\/#Download_Efficiency_of_Induction_Motor_PDF\" >Download Efficiency of Induction Motor PDF<\/a><\/li><\/ul><\/nav><\/div>\n<p>Efficiency of Induction Motor- The analogous circuit of an induction motor can be utilized to assess the machine&#8217;s losses and efficiency. The efficiency of induction motor is determined in the same way as it is for any other device. Motor losses have a direct impact on the cost of operation and, indirectly, on the motor rating.<\/p>\n<p>There should be some rotor slippage in relation to the frequency; normally, this is roughly 5%. As a result, these motors are classified as asynchronous. <strong><u>Three-Phase Induction Motors<\/u><\/strong> have an efficiency range of 85 to 96 percent. The efficiency of an induction motor is an essential factor to consider while using it. Several <a href=\"https:\/\/www.linquip.com\/suppliers-companies?q=induction-motor\"><strong>Suppliers and Companies<\/strong><\/a>, as well as various manufacturers and distributors, have introduced the efficiency of induction motors, and there are many <strong><u>Induction Motors For Sale<\/u><\/strong> on Linquip.<\/p>\n<p>There is a complete list of induction motor services on the Linquip website that covers all OEM fleets. Linquip vendors can assist you with this. Please contact <strong><u>Induction Motor Experts<\/u><\/strong> in Linquip to learn more about how to connect with a diverse group of service providers who consistently deliver high-quality products.<\/p>\n<p>Measuring losses is a common method of determining efficiency. ANSI, IEEE, NEMA, and the Canadian Standards Association have all specified measurement standards in detail.<\/p>\n<h2><span class=\"ez-toc-section\" id=\"Power_Transfer_Stages_of_Induction_Motor\"><\/span><strong>Power Transfer Stages of Induction Motor<\/strong><span class=\"ez-toc-section-end\"><\/span><\/h2>\n<p>An <a href=\"https:\/\/www.linquip.com\/blog\/single-phase-induction-motor\/\">induction motor<\/a> turns the electrical energy it receives into mechanical energy. In an induction motor, the multiple phases of this conversion are referred to as power transfer stages. The stator input, or three-phase power input, to an induction motor, is:<\/p>\n<p>&nbsp;<\/p>\n<p style=\"text-align: center;\"><span class=\"katex-eq\" data-katex-display=\"false\">{P}_{in}={V}_{L}{I}_{L}Cos\\phi<\/span>\n<p>&nbsp;<\/p>\n<p>Where V<sub>L<\/sub> and I<sub>L<\/sub> are the line values of the stator supply voltage and current, respectively, and Cos\u03c6\u00a0is the motor&#8217;s power factor.<\/p>\n<p>The loss of stator iron and copper consumes a portion of this power. Through the air gap, the remaining power is passed inductively to the rotor. The rotor input P2 is what it&#8217;s called. Therefore, P<sub>2<\/sub> is equal to P<sub>in<\/sub> &#8211; stator iron and copper losses.<\/p>\n<p>The majority of rotor losses are copper losses, with a little amount of rotor iron loss that is often overlooked. The gross mechanical power developed by the motor Pm is obtained by subtracting the rotor copper losses from P2. So, P<sub>m<\/sub> = P<sub>2<\/sub> &#8211; rotor copper losses. Visit <a href=\"https:\/\/www.youtube.com\/watch?v=9cTfMWJwYzE\" target=\"_blank\" rel=\"noopener\">here<\/a> to see the calculation method of the efficiency of induction motor.<\/p>\n<p>Mechanical losses consume a portion of Pm, leaving the remaining power available to the load at the shaft. This is known as the Motor Pout&#8217;s Net Output Power. The above stages can be depicted in a diagram called an Induction Motor Power Flow Diagram.<\/p>\n<figure id=\"attachment_10895\" aria-describedby=\"caption-attachment-10895\" style=\"width: 773px\" class=\"wp-caption aligncenter\"><img decoding=\"async\" class=\"size-full wp-image-10895\" src=\"https:\/\/www.linquip.com\/blog\/wp-content\/uploads\/2021\/08\/1-power-flow-diagram_electricaldeck.com_.jpg\" alt=\"efficiency of induction motor\" width=\"773\" height=\"375\" title=\"\" srcset=\"https:\/\/www.linquip.com\/blog\/wp-content\/uploads\/2021\/08\/1-power-flow-diagram_electricaldeck.com_.jpg 773w, https:\/\/www.linquip.com\/blog\/wp-content\/uploads\/2021\/08\/1-power-flow-diagram_electricaldeck.com_-300x146.jpg 300w, https:\/\/www.linquip.com\/blog\/wp-content\/uploads\/2021\/08\/1-power-flow-diagram_electricaldeck.com_-768x373.jpg 768w, https:\/\/www.linquip.com\/blog\/wp-content\/uploads\/2021\/08\/1-power-flow-diagram_electricaldeck.com_-696x338.jpg 696w\" sizes=\"(max-width: 773px) 100vw, 773px\" \/><figcaption id=\"caption-attachment-10895\" class=\"wp-caption-text\">Power Flow Diagram of Induction Motor (Reference: <strong>electricaldeck.com<\/strong>)<\/figcaption><\/figure>\n<h2><span class=\"ez-toc-section\" id=\"Types_of_Losses\"><\/span><strong>Types of Losses<\/strong><span class=\"ez-toc-section-end\"><\/span><\/h2>\n<p>In a three-phase induction motor, there are two types of losses. These are:<\/p>\n<h3><strong>Constant or Fixed Losses<\/strong><\/h3>\n<p>Constant losses are losses that are assumed to remain constant throughout an induction motor&#8217;s usual operating range. By running a no-load test on the three-phase induction motor, the fixed losses can be simply determined. These losses are further divided into the following categories:<\/p>\n<ul>\n<li><strong>Iron or core losses<\/strong><\/li>\n<li><strong>Mechanical losses<\/strong><\/li>\n<li><strong>Brush friction losses<\/strong><\/li>\n<\/ul>\n<h4><strong>Iron or Core Losses<\/strong><\/h4>\n<p>Hysteresis and eddy current losses are two types of iron or core losses. The use of lamination on the core reduces eddy current losses. Because the area of the core is reduced by laminating it, the resistance increases, resulting in a reduction in eddy currents. The use of high-grade silicon steel reduces hysteresis losses. The frequency of the supplied voltage affects core losses.<\/p>\n<p>The stator frequency is always f, and the rotor frequency is slip times the supply frequency, (s<sub>f<\/sub>), which is always smaller than the stator frequency. Because slip is on the order of 3% under normal working conditions, the rotor frequency for a 50 Hz stator is roughly 1.5 Hz. As a result, rotor core loss is minor compared to stator core loss, and it is often overlooked in normal operation.<\/p>\n<h4><strong>Mechanical and Brush Friction Losses<\/strong><\/h4>\n<p>In wound rotor induction motors, mechanical losses occur at the bearing, and brush friction losses occur at the brush. These losses begin at zero and rise as the speed of the vehicle increases. The speed of a three-phase induction motor is normally constant. As a result, these losses are nearly constant.<\/p>\n<p>To explore the relation between rotor output, rotor input, and rotor Copper losses, Let P<sub>2<\/sub> = Rotor input, P<sub>c<\/sub> = Rotor copper losses, T<sub>g<\/sub> = Gross torque developed by the rotor in N-m, and P<sub>m<\/sub> = Gross mechanical power developed or rotor output.<\/p>\n<p>Shaft Torque or Useful Torque T<sub>sh<\/sub> is the actual torque available at the shaft, so T<sub>sh<\/sub> = Gross torque and T<sub>g<\/sub> = Torque lost due to the friction and windage losses.<\/p>\n<p>Now, a revolving magnetic field rotates at a speed of Ns rpm to provide input to the rotor through the air gap. In terms of gross torque Tg and speed, the rotor input can be written as,<\/p>\n<p>&nbsp;<\/p>\n<p style=\"text-align: center;\"><span class=\"katex-eq\" data-katex-display=\"false\">{P}_{2}=\\frac{2\\pi {N}_{s}{T}_{g}}{60}<\/span>\n<p>&nbsp;<\/p>\n<p>The torque created is unchanged, but the rotor output, which is the gross mechanical power developed Pm, is now at a speed of &#8216;N&#8217; rpm. So, on the output side, we may say,<\/p>\n<p>&nbsp;<\/p>\n<p style=\"text-align: center;\"><span class=\"katex-eq\" data-katex-display=\"false\">{P}_{m}=\\frac{2\\pi {N}{T}_{g}}{60}<\/span>\n<p>&nbsp;<\/p>\n<p>We know that, rotor copper losses, P<sub>c<\/sub>=P<sub>2<\/sub> \u2013 P<sub>m<\/sub>.<\/p>\n<p>Using the above equations, we get<\/p>\n<p>&nbsp;<\/p>\n<p style=\"text-align: center;\"><span class=\"katex-eq\" data-katex-display=\"false\">\\frac{{P}_{c}}{{P}_{2}}=\\frac{{N}_{s}-N}{{N}_{s}}=s<\/span>\n<p>&nbsp;<\/p>\n<p>As a result, rotor copper losses are equal to slip times rotor input. Now that total mechanical power has been generated as P<sub>m<\/sub>=(1-s) P<sub>2<\/sub>.<\/p>\n<p>As a result, the rotor input multiplied by (1 &#8211; s) equals the gross mechanical power developed. So,<\/p>\n<p>&nbsp;<\/p>\n<p style=\"text-align: center;\"><span class=\"katex-eq\" data-katex-display=\"false\">\\frac{{P}_{c}}{{P}_{m}}=\\frac{s}{1-s}<\/span>\n<p>&nbsp;<\/p>\n<h3><strong>Variable Losses<\/strong><\/h3>\n<figure id=\"attachment_10896\" aria-describedby=\"caption-attachment-10896\" style=\"width: 596px\" class=\"wp-caption aligncenter\"><img decoding=\"async\" class=\"size-full wp-image-10896\" src=\"https:\/\/www.linquip.com\/blog\/wp-content\/uploads\/2021\/08\/2-variable-loses_electrical4u.com_.png\" alt=\"efficiency of induction motor\" width=\"596\" height=\"384\" title=\"\" srcset=\"https:\/\/www.linquip.com\/blog\/wp-content\/uploads\/2021\/08\/2-variable-loses_electrical4u.com_.png 596w, https:\/\/www.linquip.com\/blog\/wp-content\/uploads\/2021\/08\/2-variable-loses_electrical4u.com_-300x193.png 300w\" sizes=\"(max-width: 596px) 100vw, 596px\" \/><figcaption id=\"caption-attachment-10896\" class=\"wp-caption-text\">Variable Losses Diagram (Reference: <strong>electrical4u.com<\/strong>)<\/figcaption><\/figure>\n<p>Copper losses are another name for these losses. Current flowing in the stator and rotor windings causes these losses. The current flowing in the rotor and stator windings changes as the load changes, and so these losses fluctuate as well. As a result, these losses are referred to as variable losses. The copper losses are measured using a three-phase induction motor with a blocked rotor. An induction motor&#8217;s primary function is to convert electrical energy into mechanical energy. The power travels through various phases during the conversion of electrical energy to mechanical energy.<\/p>\n<p>A power flow diagram depicts the movement of energy across various phases. The three-phase induction motor&#8217;s input, as we all know, is three-phase power. As a result, the stator of a three-phase induction motor receives three-phase power.<\/p>\n<p>A percentage of this power is utilized to compensate for stator losses, which includes stator iron and copper losses. The remaining power is delivered to the rotor as rotor input (input electrical power \u2013 stator losses).<\/p>\n<p>Now the rotor must transform this rotor input into mechanical energy, but it cannot convert the entire input into mechanical output since it must supply rotor losses. As previously stated, there are two types of rotor losses: rotor iron loss and rotor copper loss. The iron loss is normally ignored because it is dependent on the rotor frequency, which is relatively low when the rotor rotates. As a result, the rotor only has rotor copper loss. As a result, these rotor copper losses must be supplied by the rotor input. The remaining part of the Rotor input, P<sub>2<\/sub>, is turned into mechanical power, P<sub>m<\/sub>, after feeding the rotor copper losses.<\/p>\n<p>The shaft\u00a0transfers this mechanical power to the load, however, there are certain mechanical losses like friction and windage. As a result, the developed gross mechanical power must be used to compensate for these losses. Thus, P<sub>out<\/sub> is the net output power created at the shaft and finally delivered to the load. (The shaft power, or useable power, is referred to as Pout)<\/p>\n<p>P<sub>out<\/sub> = P<sub>m<\/sub> \u2013 Mechanical losses (friction and windage losses).<\/p>\n<p>The rotor&#8217;s torque is gross mechanical torque, and because of mechanical losses, the entire torque cannot be used to drive the load. The load torque, also known as shaft torque or useful toque, is the net output torque. Therefore, T<sub>sh<\/sub>=T<sub>g<\/sub> &#8211; T<sub>lost<\/sub>.<\/p>\n<p>Where T<sub>lost<\/sub> = Torque lost due to mechanical losses.<\/p>\n<h3><strong>Which Induction Motor Has Lowest Efficiency?<\/strong><\/h3>\n<p>HP stands for output horsepower, while PF stands for input power factor. Large three-phase induction motors are, on average, more efficient than smaller motors. At maximum load, large induction motor efficiency can reach 95 percent, but 90 percent is more frequent. When compared to a three-phase induction motor, the single-phase induction motor has a lower power factor. Single-phase motors have poor efficiency, but three-phase induction motors have high efficiency.<\/p>\n<h2><span class=\"ez-toc-section\" id=\"Efficiency_of_Three-Phase_Induction_Motor\"><\/span><strong>Efficiency of Three-Phase Induction Motor<\/strong><span class=\"ez-toc-section-end\"><\/span><\/h2>\n<figure id=\"attachment_10897\" aria-describedby=\"caption-attachment-10897\" style=\"width: 385px\" class=\"wp-caption aligncenter\"><img decoding=\"async\" class=\"size-full wp-image-10897\" src=\"https:\/\/www.linquip.com\/blog\/wp-content\/uploads\/2021\/08\/3-Three-phase-induction-motor_gwindustry.com_.png\" alt=\"efficiency of induction motor\" width=\"385\" height=\"298\" title=\"\" srcset=\"https:\/\/www.linquip.com\/blog\/wp-content\/uploads\/2021\/08\/3-Three-phase-induction-motor_gwindustry.com_.png 385w, https:\/\/www.linquip.com\/blog\/wp-content\/uploads\/2021\/08\/3-Three-phase-induction-motor_gwindustry.com_-300x232.png 300w\" sizes=\"(max-width: 385px) 100vw, 385px\" \/><figcaption id=\"caption-attachment-10897\" class=\"wp-caption-text\">Three-Phase Induction Motor (Reference: <strong>gwindustry.com<\/strong>)<\/figcaption><\/figure>\n<p>The output-to-input ratio is called the efficiency. The rotor efficiency of the three-phase induction motor is the ratio of rotor output per rotor input which is equal to the Gross mechanical power developed \/ rotor input or P<sub>m<\/sub>\/P<sub>2<\/sub>.<\/p>\n<p>Therefore, the three-phase induction motor efficiency is the ratio of the power developed at the shaft per the electrical input to the motor.<\/p>\n<h3><b>Buy Equipment or Ask for a Service<\/b><\/h3>\n<p>By using Linquip RFQ Service, you can expect\u00a0to receive quotations from various suppliers across multiple industries and regions.<\/p>\n<p style=\"text-align: center;\"><strong><a href=\"http:\/\/linquip.com\/get-quote?utm_source=blog&amp;utm_medium=content&amp;utm_campaign=product_list&amp;utm_term=product_list&amp;utm_content=rfq\" target=\"_blank\" rel=\"noopener\">Click Here to Request a Quotation From Suppliers and Service Providers<\/a><\/strong><\/p>\n<h2><span class=\"ez-toc-section\" id=\"Download_Efficiency_of_Induction_Motor_PDF\"><\/span><strong>Download Efficiency of Induction Motor PDF<\/strong><span class=\"ez-toc-section-end\"><\/span><\/h2>\n<div class=\"su-button-center\"><a href=\"https:\/\/www.linquip.com\/blog\/wp-content\/uploads\/2021\/09\/linquip.com-Efficiency-of-Induction-Motor-Calculation-Equation.pdf\" class=\"su-button su-button-style-default su-button-wide\" style=\"color:#FFFFFF;background-color:#2D89EF;border-color:#246ec0;border-radius:12px\" target=\"_blank\" rel=\"noopener noreferrer\"><span style=\"color:#FFFFFF;padding:0px 30px;font-size:22px;line-height:44px;border-color:#6cadf4;border-radius:12px;text-shadow:none\"> Download PDF<\/span><\/a><\/div>\n<p><em><strong>Read More on Linquip<\/strong><\/em><\/p>\n<ul>\n<li><strong><span style=\"text-decoration: underline;\"><span style=\"font-size: 10pt; font-family: verdana, geneva, sans-serif;\"><a title=\"Types of Induction Motor: A Concise and Useful Guild\" href=\"https:\/\/www.linquip.com\/blog\/types-of-induction-motor\/\" target=\"_blank\" rel=\"noopener\">Types of Induction Motor: A Concise and Useful Guild<\/a><\/span><\/span><\/strong><\/li>\n<li><strong><span style=\"text-decoration: underline;\"><span style=\"font-size: 10pt; font-family: verdana, geneva, sans-serif;\"><a title=\"What is Speed Control of Induction Motor?\" href=\"https:\/\/www.linquip.com\/blog\/speed-control-of-induction-motor\/\" target=\"_blank\" rel=\"noopener\">What is Speed Control of Induction Motor?<\/a><\/span><\/span><\/strong><\/li>\n<li><strong><span style=\"text-decoration: underline;\"><span style=\"font-size: 10pt; font-family: verdana, geneva, sans-serif;\"><a title=\"Efficiency of Wind Turbines\" href=\"https:\/\/www.linquip.com\/blog\/efficiency-of-wind-turbines\/\" target=\"_blank\" rel=\"noopener\" data-schema-attribute=\"\">Efficiency of Wind Turbines<\/a><\/span><\/span><\/strong><\/li>\n<li><strong><span style=\"text-decoration: underline;\"><span style=\"font-size: 10pt; font-family: verdana, geneva, sans-serif;\"><a title=\"Efficiency of Electric Motor\" href=\"https:\/\/www.linquip.com\/blog\/efficiency-of-electric-motor\/\" target=\"_blank\" rel=\"noopener\" data-schema-attribute=\"\">Efficiency of Electric Motor<\/a><\/span><\/span><\/strong><\/li>\n<li><strong><span style=\"text-decoration: underline;\"><span style=\"font-size: 10pt; font-family: verdana, geneva, sans-serif;\"><a title=\"DC Motor Efficiency\" href=\"https:\/\/www.linquip.com\/blog\/dc-motor-efficiency\/\" target=\"_blank\" rel=\"noopener\" data-schema-attribute=\"\">DC Motor Efficiency<\/a><\/span><\/span><\/strong><\/li>\n<li><strong><span style=\"text-decoration: underline;\"><span style=\"font-size: 10pt; font-family: verdana, geneva, sans-serif;\"><a title=\"The Only Guide You\u2019ll Ever Need For The Working Principle of Induction Motor\" href=\"https:\/\/www.linquip.com\/blog\/the-only-guide-youll-ever-need-for-the-working-principle-of-induction-motor\/\" target=\"_blank\" rel=\"noopener\">The Only Guide You\u2019ll Ever Need For The Working Principle of Induction Motor<\/a><\/span><\/span><\/strong><\/li>\n<li><strong><span style=\"text-decoration: underline;\"><span style=\"font-size: 10pt; font-family: verdana, geneva, sans-serif;\"><a href=\"https:\/\/www.linquip.com\/blog\/efficiency-of-induction-motor\/\" target=\"_blank\" rel=\"noopener\">Efficiency of Induction Motor: Calculation &amp; Equation<\/a><\/span><\/span><\/strong><\/li>\n<li><strong><span style=\"text-decoration: underline;\"><span style=\"font-size: 10pt; font-family: verdana, geneva, sans-serif;\"><a href=\"https:\/\/www.linquip.com\/blog\/efficiency-of-inverter\/\" target=\"_blank\" rel=\"noopener\">Efficiency of Inverter: Calculation &amp; Equation Guide<\/a><\/span><\/span><\/strong><\/li>\n<li><strong><span style=\"text-decoration: underline;\"><span style=\"font-size: 10pt; font-family: verdana, geneva, sans-serif;\"><a href=\"https:\/\/www.linquip.com\/blog\/generator-efficiency\/\" target=\"_blank\" rel=\"noopener\">What is Generator Efficiency? Calculation &amp; Formula Guide<\/a><\/span><\/span><\/strong><\/li>\n<li><strong><span style=\"text-decoration: underline;\"><span style=\"font-size: 10pt; font-family: verdana, geneva, sans-serif;\"><a href=\"https:\/\/www.linquip.com\/blog\/electric-heater-efficiency\/\" target=\"_blank\" rel=\"noopener\">Electric Heater Efficiency and Running Costs<\/a><\/span><\/span><\/strong><\/li>\n<li><strong><span style=\"text-decoration: underline;\"><span style=\"font-size: 10pt; font-family: verdana, geneva, sans-serif;\"><a href=\"https:\/\/www.linquip.com\/blog\/efficiency-of-fuel-cell\/\" target=\"_blank\" rel=\"noopener\">Efficiency of Fuel Cell: Calculation Formula &amp; Equation<\/a><\/span><\/span><\/strong><\/li>\n<li><strong><span style=\"text-decoration: underline;\"><span style=\"font-size: 10pt; font-family: verdana, geneva, sans-serif;\"><a href=\"https:\/\/www.linquip.com\/blog\/space-heater-efficiency\/\" target=\"_blank\" rel=\"noopener\">Space Heater Efficiency For Various Types of Heater<\/a><\/span><\/span><\/strong><\/li>\n<li><strong><span style=\"text-decoration: underline;\"><span style=\"font-size: 10pt; font-family: verdana, geneva, sans-serif;\"><a href=\"https:\/\/www.linquip.com\/blog\/heater-efficiency\/\" target=\"_blank\" rel=\"noopener\">Heater Efficiency Calculation: Formula &amp; Equation<\/a><\/span><\/span><\/strong><\/li>\n<li><strong><span style=\"text-decoration: underline;\"><span style=\"font-size: 10pt; font-family: verdana, geneva, sans-serif;\"><a href=\"https:\/\/www.linquip.com\/blog\/fan-efficiency\/\" target=\"_blank\" rel=\"noopener\">Fan Efficiency Calculation: Formula &amp; Equation<\/a><\/span><\/span><\/strong><\/li>\n<li><strong><span style=\"text-decoration: underline;\"><span style=\"font-size: 10pt; font-family: verdana, geneva, sans-serif;\"><a href=\"https:\/\/www.linquip.com\/blog\/efficiency-of-diesel-generators\/\" target=\"_blank\" rel=\"noopener\">Efficiency of Diesel Generators Calculation: Formula &amp; Equation<\/a><\/span><\/span><\/strong><\/li>\n<li><strong><span style=\"text-decoration: underline;\"><span style=\"font-size: 10pt; font-family: verdana, geneva, sans-serif;\"><a href=\"https:\/\/www.linquip.com\/blog\/pump-efficiency\/\" target=\"_blank\" rel=\"noopener\">Calculation of Pump Efficiency: Formula &amp; Equation<\/a><\/span><\/span><\/strong><\/li>\n<\/ul>\n","protected":false},"excerpt":{"rendered":"<p>Efficiency of Induction Motor- The analogous circuit of an induction motor can be utilized to assess the machine&#8217;s losses and efficiency. The efficiency of induction motor is determined in the same way as it is for any other device. Motor losses have a direct impact on the cost of operation and, indirectly, on the motor &#8230;<\/p>\n","protected":false},"author":10,"featured_media":10899,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"site-sidebar-layout":"default","site-content-layout":"default","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":"","theme-transparent-header-meta":"default","adv-header-id-meta":"","stick-header-meta":"","header-above-stick-meta":"","header-main-stick-meta":"","header-below-stick-meta":"","footnotes":""},"categories":[323,12],"tags":[],"class_list":["post-10894","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-efficiency-calculation","category-motor"],"acf":[],"_links":{"self":[{"href":"https:\/\/www.linquip.com\/blog\/wp-json\/wp\/v2\/posts\/10894","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/www.linquip.com\/blog\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/www.linquip.com\/blog\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/www.linquip.com\/blog\/wp-json\/wp\/v2\/users\/10"}],"replies":[{"embeddable":true,"href":"https:\/\/www.linquip.com\/blog\/wp-json\/wp\/v2\/comments?post=10894"}],"version-history":[{"count":5,"href":"https:\/\/www.linquip.com\/blog\/wp-json\/wp\/v2\/posts\/10894\/revisions"}],"predecessor-version":[{"id":20427,"href":"https:\/\/www.linquip.com\/blog\/wp-json\/wp\/v2\/posts\/10894\/revisions\/20427"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/www.linquip.com\/blog\/wp-json\/wp\/v2\/media\/10899"}],"wp:attachment":[{"href":"https:\/\/www.linquip.com\/blog\/wp-json\/wp\/v2\/media?parent=10894"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.linquip.com\/blog\/wp-json\/wp\/v2\/categories?post=10894"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.linquip.com\/blog\/wp-json\/wp\/v2\/tags?post=10894"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}