Electrical Machines A single phase transformer when supplied from 220 V, 50 Hz has eddy current loss of 50 W. If the transformer is connected voltage of 330 V, 75 Hz, the eddy current loss will be 112.5 W 168.75 W 75 W 50 W 112.5 W 168.75 W 75 W 50 W ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines Addition of 0.3 % to 4.5 % silicon to iron increases the hysteresis loss. None of these reduces the saturation magnetization. increases the electrical resistivity of iron. increases the hysteresis loss. None of these reduces the saturation magnetization. increases the electrical resistivity of iron. ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines Commutator in DC generator is used for collecting of current convert AC armature current in to DC reduce losses increase efficiency collecting of current convert AC armature current in to DC reduce losses increase efficiency ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines In diesel engine, gas engine type of machine contains ___________________ pole type of alternator. cylindrical. non uniform cylindrical. none of these. salient. cylindrical. non uniform cylindrical. none of these. salient. ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines The rotor of a 3 - Φ wound induction motor is provided with heavy short-circuited end rings. single phase winding. heavy copper or aluminium bars placed in rotor slots. three phase winding. heavy short-circuited end rings. single phase winding. heavy copper or aluminium bars placed in rotor slots. three phase winding. ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines On what factors the speed of dc motor depends? Applied voltage. All of these. Armature current Ia. Field flux. Applied voltage. All of these. Armature current Ia. Field flux. ANSWER DOWNLOAD EXAMIANS APP
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