Electrical Machines The frequency of voltage generated by an alternator having 8 poles and rotating at 250 rpm is 50 Hz. 25 Hz. 16.67 Hz. 60 Hz. 50 Hz. 25 Hz. 16.67 Hz. 60 Hz. ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines Armature flux is.............with respect to main field flux or main field poles? rotates opposite direction stationary rotates same direction None of these rotates opposite direction stationary rotates same direction None of these ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines In a transformer OC test is conducted on LV side and SC test is conducted on HV side both Oc and SC tests are conducted on HV side both OC and SC tests are conducted on LV side OC test is conducted on HV side and SC test is conducted on LV side OC test is conducted on LV side and SC test is conducted on HV side both Oc and SC tests are conducted on HV side both OC and SC tests are conducted on LV side OC test is conducted on HV side and SC test is conducted on LV side ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines If terminal voltage of one 1000 rpm shunt motor is reduced to half the speed of the motor will be 500 rpm 1000 rpm 2000 rpm 250 rpm 500 rpm 1000 rpm 2000 rpm 250 rpm ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines DC motors are stopped by opening line switches and not by forcing the handle of the motor starter back to OFF position. This is due to occurance of Heavy sparking at brushes. Both of above. Heavy sparking at the first stud of starting resistance steps. None of these. Heavy sparking at brushes. Both of above. Heavy sparking at the first stud of starting resistance steps. None of these. ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines The torque angle, in a synchronous motor, is the angle between None of these magnetizing electric current and back emf. the rotating stator flux and rotor flux. the supply voltage and the back emf. None of these magnetizing electric current and back emf. the rotating stator flux and rotor flux. the supply voltage and the back emf. ANSWER DOWNLOAD EXAMIANS APP
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