Electrical Machines The output power of any electrical motor is taken from the Motor frame. Field. Coupling mounted on the shaft. Armature. Motor frame. Field. Coupling mounted on the shaft. Armature. ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines In which of the following motors DC excitation is not required? 3-phase synchronous motor reluctance motor hysteresis motor 3-phase synchronous generator 3-phase synchronous motor reluctance motor hysteresis motor 3-phase synchronous generator ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines Commutator in DC generator is used for increase efficiency convert AC armature current in to DC reduce losses collecting of current increase efficiency convert AC armature current in to DC reduce losses collecting of current ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines Semi closed slots or totally closed slots are used in induction motors, essentially to improve starting torque reduce magnetising current and improve power factor decrease starting torque increase pull out torque improve starting torque reduce magnetising current and improve power factor decrease starting torque increase pull out torque ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines On which of the following factor/factors the speed of a DC motor depends upon? Applied voltage. Armature current. Field flux. All of these. Applied voltage. Armature current. Field flux. All of these. ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines Addition of 0.3 % to 4.5 % silicon to iron None of these reduces the saturation magnetization. increases the hysteresis loss. increases the electrical resistivity of iron. None of these reduces the saturation magnetization. increases the hysteresis loss. increases the electrical resistivity of iron. ANSWER DOWNLOAD EXAMIANS APP
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