Electrical Machines If field current is decreased in shunt dc motor, the speed of the motor None of these remains same. decreases. increases. None of these remains same. decreases. increases. ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines What is the mechanical power developed by a DC series motor is maximum? Back emf is equal to half the applied voltage. None of above. Back emf is equal to zero. Back emf is equal to applied voltage. Back emf is equal to half the applied voltage. None of above. Back emf is equal to zero. Back emf is equal to applied voltage. ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines What is the shunt resistance component equivalent circuit obtained by no load test of an induction motor representative of ? core loss only Copper loss windage and friction loss both 1 and 2 core loss only Copper loss windage and friction loss both 1 and 2 ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines In Ward-Leonard system, the lower limit of the speed imposed by Residual magnetism of the generator. Field resistance. None of above. Armature resistance. Residual magnetism of the generator. Field resistance. None of above. Armature resistance. ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines Ward-Leonard control is basically a ___________ control method. Field diverter control. Armature resistance control. Field control. Armature voltage control. Field diverter control. Armature resistance control. Field control. Armature voltage control. ANSWER DOWNLOAD EXAMIANS APP
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