Electrical Machines For pure resistive load what is the armature reaction? cross magnetization All of these magnetization demagnetization cross magnetization All of these magnetization demagnetization ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines Dummy coils are used for reducing armature reaction. All of these increasing efficiency. mechanical balancing. reducing armature reaction. All of these increasing efficiency. mechanical balancing. ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines A 220 ,V 15 , kW 100 rpm shunt motor with armature resistance of 0.25 , W has a rated line current of 68 A and a rated field current of 2.2 A. The change in field flux required to obtain a speed of 1600 rpm while drawing a line current of 52.8 A and a field current of 1.8 A is 36.36% increase 18.18% increase 36.36% decrease 36.36% increase 36.36% increase 18.18% increase 36.36% decrease 36.36% increase ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines Direct axis reactance is defined as the ratio of Vmax to Imin Vmin to Imax Vmin to Imin Vmax to Imax Vmax to Imin Vmin to Imax Vmin to Imin Vmax to Imax ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines A 4-pole DC generator runs at 1500 rpm. The frequency of current in the armature winding is: 25 Hz. Zero Hz. 100 Hz. 50 Hz. 25 Hz. Zero Hz. 100 Hz. 50 Hz. ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines The effect of ------------------ on main field flux is armature reaction? armature mmf armature current armature flux All of these armature mmf armature current armature flux All of these ANSWER DOWNLOAD EXAMIANS APP
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