Electrical Machines In dc motors, under leading pole tips flux density will--------? decrease increase either increase or decrease None of these decrease increase either increase or decrease None of these ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines In a DC machine, which of these parameters remain the same whether it runs as a DC motor or a DC generator? Can not be determined. Induced emf. Mechanical power. Armature current. Can not be determined. Induced emf. Mechanical power. Armature current. ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines The short circuit test on a transformer is conducted to obtain copper losses. core loses only. eddy current loss. hysteresis loss. copper losses. core loses only. eddy current loss. hysteresis loss. ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines For standing a DC motor a starter is required because None of these it limits the starting current to a safe value. It starts the motor. it limits the speed of the motor. None of these it limits the starting current to a safe value. It starts the motor. it limits the speed of the motor. ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines In field flux method speed control of DC Motor is constant hp drive below the base speed. constant torque drive above the base speed. constant power drive above base speed. constant torque drive below the base speed. constant hp drive below the base speed. constant torque drive above the base speed. constant power drive above base speed. constant torque drive below the base speed. ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines If starter is not used with large DC motor for starting, it will 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. provide execessive voltage drop in line. damage the armature and commutator. all of above. ANSWER DOWNLOAD EXAMIANS APP
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