Electrical Machines A DC generator without commutator is a DC motor DC generator AC generator induction motor DC motor DC generator AC generator induction motor ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines A synchronous machine has P number of poles, find the relation between electrical angular momentum (ωe) and mechanical angular momentum (ωm)? ωe = P/2*ωm ωe = P*ωm ωe = ωm ωe = 2/P*ωm ωe = P/2*ωm ωe = P*ωm ωe = ωm ωe = 2/P*ωm ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines Hunting in a synchronous cannot be due to windage friction. variable supply voltage. variable frequency. variable load. windage friction. variable supply voltage. variable frequency. variable load. ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines Compensating windings are used in DC generators mainly to reduce the eddy currents by providing local short circuit. to neutralize the cross magnetizing effect of the armature reaction. to provide path for the circulation of cooling air. None of these mainly to reduce the eddy currents by providing local short circuit. to neutralize the cross magnetizing effect of the armature reaction. to provide path for the circulation of cooling air. None of these ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines For standing a DC motor a starter is required because It starts the motor. None of these it limits the starting current to a safe value. it limits the speed of the motor. It starts the motor. None of these it limits the starting current to a safe value. it limits the speed of the motor. ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines In a dc machine, the demagnetizing effect of armature reaction is due to magnetic saturation in half of the field pole uneven air-gap length component of armature mmf along field axis non-sinusoidal nature of armature mmf magnetic saturation in half of the field pole uneven air-gap length component of armature mmf along field axis non-sinusoidal nature of armature mmf ANSWER DOWNLOAD EXAMIANS APP
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