Electrical Machines Ward-Leonard control is basically a ___________ control method. Field diverter control. Armature voltage control. Field control. Armature resistance control. Field diverter control. Armature voltage control. Field control. Armature resistance control. ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines On which of the following factor/factors the speed of a DC motor depends upon? Field flux. All of these. Armature current. Applied voltage. Field flux. All of these. Armature current. Applied voltage. ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines If any two leads from slip rings are interchanged in a 3 - Φ induction motor, the motor will get damaged. not run. continue running in the same direction as before. run in a direction opposite to previous one. get damaged. not run. continue running in the same direction as before. run in a direction opposite to previous one. ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines Exciting current of an induction motor is equal as power transformer. none of these. lesser than power transformer. higher than power transformer. equal as power transformer. none of these. lesser than power transformer. higher than power transformer. ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines When the mechanical power is developed by a DC motor maximum back emf is equal to applied voltage. Back emf is equal. None of above. Back emf is equal to half of applied voltage. back emf is equal to applied voltage. Back emf is equal. None of above. Back emf is equal to half of applied voltage. ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines An induction motor having 8 poles runs at 727.5 rpm. If the supply frequency is 50Hz, the emf in the rotor will have a frequency of 1.5Hz 51.5Hz 48.5Hz 2.5Hz 1.5Hz 51.5Hz 48.5Hz 2.5Hz ANSWER DOWNLOAD EXAMIANS APP