Electrical Machines What is the frequency of rotor current of 50 Hz induction motor operating at 4% slip? 2HZ 50Hz 1 Hz 2.5Hz 2HZ 50Hz 1 Hz 2.5Hz ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines On which of the following factor/factors the speed of a DC motor depends upon? Armature current. All of these. Field flux. Applied voltage. Armature current. All of these. Field flux. Applied voltage. ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines No load test of 3-phase induction motor gives which of the following? both A and B variable loss None of these constant loss both A and B variable loss None of these constant loss ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines In star-delta starting of squirrel cage induction motor compared to DOL starting the starting current and torque are 1/√3, 1/3 1/3, 1/√3 1/√3, 1/√3 1/3, 1/3 1/√3, 1/3 1/3, 1/√3 1/√3, 1/√3 1/3, 1/3 ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines Two DC series motors are connected in series and are driving the same mechanical load. If the motors are now connected in parallel the speed will become 4 times. double. half. one fourth. 4 times. double. half. one fourth. ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines For pure resistive load what is the armature reaction? cross magnetization demagnetization magnetization All of these cross magnetization demagnetization magnetization All of these ANSWER DOWNLOAD EXAMIANS APP
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