الاتحان النهاني - مادة )المكائن الكهربائية الامتحان النهائی )مكائن كهربائية(- النور الأوا UMeet - xgh-tqtj-mxp Ve/1FAIpQLSckzwA04f_pe9r3xm3EUm4m8uPP8AiiRvkneUi-uuCtwT07UA/formResponse الفصول الدراسية...

Extracted text: الاتحان النهاني - مادة )المكائن الكهربائية الامتحان النهائی )مكائن كهربائية(- النور الأوا UMeet - xgh-tqtj-mxp Ve/1FAIpQLSckzwA04f_pe9r3xm3EUm4m8uPP8AiiRvkneUi-uuCtwT07UA/formResponse الفصول الدراسية - الصفحة الرئيسية شبكتي تي في StreamYard (20+) Facebook Meet - uro-piok-kgs Q4. 1- What is the main difference between DC generators, DC motors? 2-What is the main job of the equalizer used in series generators connected in parallel? 3-Calculate the percentage speed regulation of a motor at full load if the machine runs at 1000 rpm at no-load and the full load speed is 900 rpm. 4-What is the main function of a diverter used in series wound DC motor? 5- What is the main difference between (iron and friction losses) and copper (Cu) losses in DC generators? Q5. 1- What is the main difference between DC generator, and transformers? 2- What is the main difference between step-up and step-down transfomers? 3-Why the controller resistance is used in series with the armature in a DC shunt motor? 4- What is the main difference between separately-exited DC generators and self-exited DC generator? 5- The copper weight used in ordinary transfomer coils is 100 kg. Calculate the copper saving in an equivalent autotransformer if the voltage transformation ratio k is 0.5. صفحة 3 من 6 رجر d Google S2