What you’ll learn8 learning objectivesChoose one objective for a focused lesson, or study the complete topic.4.5.6.1Construction of a simple transformer• Describe the construction of a simple transformer with a soft-iron core, as used for voltage transformationsSyllabus objective4.5.6.2Terms primary, secondary, step-up and• Use the terms primary, secondary, step-up and step-downSyllabus objective4.5.6.3Transformer relation: Vp/Vs = Np/Ns• Recall/use transformer relation: Vp/Vs = Np/Ns, where p and s mean primary and secondarySyllabus objective4.5.6.4Use of transformers in high- voltage• Describe the use of transformers in high- voltage transmission of electricitySyllabus objective4.5.6.5Advantages of high-voltage• State the advantages of high-voltage transmissionSyllabus objective4.5.6.6Principle of operation of a simple• Explain the principle of operation of a simple iron-cored transformerSyllabus objective4.5.6.7100% transformer efficiency: IpVp =• Recall/use 100% transformer efficiency: IpVp = IsVs, where p and s mean primary and secondarySyllabus objective4.5.6.8Recall/use: P = I2R to explain why• Recall/use: P = I2R to explain why power losses in cables are smaller when the voltage is greaterSyllabus objective