Electrical Machines Hopkinson test is conducted under which of the following condition? any of the above full load half load no load any of the above full load half load no load ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines What is/are the necessary conditions for voltage build up in self excited generator? Field winding resistance should be less than critical resistance. Field winding should be properly connected to armature winding. Poles should contain residual flux. All of these Field winding resistance should be less than critical resistance. Field winding should be properly connected to armature winding. Poles should contain residual flux. All of these ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines DC Motor dc compound motor. dc series motor. dc shunt with armature resistance control. dc shunt motor with field weakening. dc compound motor. dc series motor. dc shunt with armature resistance control. dc shunt motor with field weakening. ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines If the excitation is increased, the power factor is lagging power factor unity power factor leading power factor None of these lagging power factor unity power factor leading power factor None of these ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines What is the frequency of rotor current of 50 Hz induction motor operating at 4% slip? 2.5Hz 50Hz 1 Hz 2HZ 2.5Hz 50Hz 1 Hz 2HZ ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines The frequency of voltage generated by an alternator having 8 poles and rotating at 250 rpm is 60 Hz. 16.67 Hz. 25 Hz. 50 Hz. 60 Hz. 16.67 Hz. 25 Hz. 50 Hz. ANSWER DOWNLOAD EXAMIANS APP
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