Electrical Machines If starter is not used with large DC motor for starting, it will provide execessive voltage drop in line. damage the armature and commutator. all of above. draw a starting current many times its rated full load current. provide execessive voltage drop in line. damage the armature and commutator. all of above. draw a starting current many times its rated full load current. ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines Series generators are used in which of the following applications? Air crafts. All of these Arc welding. Used as boosters in dc distribution or transmission. Air crafts. All of these Arc welding. Used as boosters in dc distribution or transmission. ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines Flux density under leading pole tips in case of generator will None of these increase either increase or decrease decrease None of these increase either increase or decrease decrease ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines Ward-Leonard control is basically a ___________ control method. Field diverter control. Armature voltage control. Armature resistance control. Field control. Field diverter control. Armature voltage control. Armature resistance control. Field control. ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines The current drawn by the a 230 V DC motor of armature resistance 0.5 Ω and back emf 200 V is 660 60 40 600 660 60 40 600 ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines If a transformer has turns ratio K, the primary and secondary current are I1 and I2 respectively and magnetizing current and core loss component of no load current Iμ and Iw respectively, then I1 = KI2. I1 = KI2 + Iw + Iμ.ok I1 = KI2 + Iμ. I1 = KI2 + Iw. I1 = KI2. I1 = KI2 + Iw + Iμ.ok I1 = KI2 + Iμ. I1 = KI2 + Iw. ANSWER DOWNLOAD EXAMIANS APP
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