Electrical Machines Direct axis reactance is defined as the ratio of Vmin to Imin Vmin to Imax Vmax to Imin Vmax to Imax Vmin to Imin Vmin to Imax Vmax to Imin Vmax to Imax ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines Hunting in a synchronous cannot be due to windage friction. variable frequency. variable load. variable supply voltage. windage friction. variable frequency. variable load. variable supply voltage. ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines When a transformer is loaded, the secondary terminal voltage drops. That means power factor is leading. zero. lagging. unity. leading. zero. lagging. unity. ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines For a single phase capacitor start induction motor which of the following is valid? Rotation can be changed by interchanging supply terminals. Rotation can be changed by reversing main winding terminals. None of these. Direction of rotation cannot be changed. Rotation can be changed by interchanging supply terminals. Rotation can be changed by reversing main winding terminals. None of these. Direction of rotation cannot be changed. ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines If Pi and Pc represent core and full load copper loss respectively, the maximum KVA delivered to load corresponding to maximum efficiency is equal to rated KVA is Pc/Pi √(Pi/Pc) Pi/Pc (Pi/Pc)2 Pc/Pi √(Pi/Pc) Pi/Pc (Pi/Pc)2 ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines The DC generator runs at a speed of 1000 rpm and flux per pole is 0.2 Wb, number of poles are 2 the winding is wave wound and having 480 conductors. The critical speed is 1200 rpm. Then the generated emf ( Eg ) 1600 Volt. 1500 Volt. 2000 Volt. 0 Volt. 1600 Volt. 1500 Volt. 2000 Volt. 0 Volt. ANSWER DOWNLOAD EXAMIANS APP
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