Electrical Machines Find the number of poles required, when the frequency is 50Hz and speed of the motor is 500 rpm? 10 12 24 5 10 12 24 5 ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines Compensating windings are used in DC generators None of these to provide path for the circulation of cooling air. mainly to reduce the eddy currents by providing local short circuit. to neutralize the cross magnetizing effect of the armature reaction. None of these to provide path for the circulation of cooling air. mainly to reduce the eddy currents by providing local short circuit. to neutralize the cross magnetizing effect of the armature reaction. ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines Which of the following induction motor has the highest starting torque? Squirrel cage induction motor. Slip ring induction motor. Same in both induction motors. None of these Squirrel cage induction motor. Slip ring induction motor. Same in both induction motors. None of these ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines Open circuit in a transformer is prefered with rated transformer voltage high frequency supply direct current rated transformer current rated transformer voltage high frequency supply direct current rated transformer current ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines A 3 phase stepper motor has 6 stator poles and 4 rotor poles, then find the step angle? 30° 60° 10° 45° 30° 60° 10° 45° ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines In DC machines internal characteristics are plotted between Eg vs Ia Eg vs load current Vt vs load current Vt vs Ia Eg vs Ia Eg vs load current Vt vs load current Vt vs Ia ANSWER DOWNLOAD EXAMIANS APP
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