Electrical Machines In a synchronous motor, damper windings are provided on None of these pole faces. rotor shaft. stator frame. None of these pole faces. rotor shaft. stator frame. ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines If the load current and the flux of a DC motor are held constant and voltage applied across its armature is increased by 5%, the speed of the motor will depend on other factors. reduce by 5 %. increase by 5 %. remain unchanged. depend on other factors. reduce by 5 %. increase by 5 %. remain unchanged. ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines If the air gap of IM is increased, ____________ will increase. air gap flux. speed. power factor. magnetizing current. air gap flux. speed. power factor. magnetizing current. ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines An inverted V-curve of synchronous motor shows the variation of power factor and supply voltage during hunting power factor and dc excitation at constant load All of these supply voltage and field current at constant excitation power factor and supply voltage during hunting power factor and dc excitation at constant load All of these supply voltage and field current at constant excitation ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines A 8-pole, DC generator has a simplex wave-wound armature containing 32 coils of 6 turns each. Its flux per pole is 0.06 Wb. The machine is running at 250 rpm. The induced armature voltage is 384 V 192 V 96 V 768 V 384 V 192 V 96 V 768 V ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines Armature reaction of an unsaturated DC machine is none of above. demagnetising. crossmagnetising. magnetising. none of above. demagnetising. crossmagnetising. magnetising. ANSWER DOWNLOAD EXAMIANS APP
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