Electrical Machines For pure resistive load what is the armature reaction? demagnetization All of these cross magnetization magnetization demagnetization All of these cross magnetization magnetization ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines Field winding of a DC series motor is usually provided with thick wire to provide large flux. to reduce the insulation of materials. as it carries large load current. in order to reduce eddy current to provide large flux. to provide large flux. to reduce the insulation of materials. as it carries large load current. in order to reduce eddy current to provide large flux. ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines Compensating windings are used in DC generators None of these to neutralize the cross magnetizing effect of the armature reaction. mainly to reduce the eddy currents by providing local short circuit. to provide path for the circulation of cooling air. None of these to neutralize the cross magnetizing effect of the armature reaction. mainly to reduce the eddy currents by providing local short circuit. to provide path for the circulation of cooling air. ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines Sparkless commutation can be achieved by employing compensating winding. inter poles. any one or more of the above methods. high resistance carbon brushes. compensating winding. inter poles. any one or more of the above methods. high resistance carbon brushes. ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines An auto transformer having a transformation ratio of 0.8 supplies a load pf 10 KW. The power transfered inductively from the primary to secondary is 0. 10 KW. 2 KW. 8 KW. 0. 10 KW. 2 KW. 8 KW. ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines DC generator will not build up voltage if it has lost residual magnetism. if field resistance is more than critical resistance. due to wrong direction of rotation. any one of above. if it has lost residual magnetism. if field resistance is more than critical resistance. due to wrong direction of rotation. any one of above. ANSWER DOWNLOAD EXAMIANS APP
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