Electrical Machines For successful parallel operation of two single phase transformers, the most essential condition is that their KVA ratings are equal polarities are properly connected percentage impedances are equal turn- ratios are exactly equal KVA ratings are equal polarities are properly connected percentage impedances are equal turn- ratios are exactly equal ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines In a dc machine 4 pole lap winding is used. The number of parallel paths are? 1 4 2 8 1 4 2 8 ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines A crusher is equipped with Synchronous motor. DC shunt motor. Slip ring induction motor. Reluctance motor. Synchronous motor. DC shunt motor. Slip ring induction motor. Reluctance motor. ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines Secondary winding of an auto transformer is also called common winding. tertiary winding. compensating winding. damping winding. common winding. tertiary winding. compensating winding. damping winding. ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines In dc machine armature windings are placed on rotor because of the necessity for commutation. development of torque. electromechanical energy conversion. generation of voltage. commutation. development of torque. electromechanical energy conversion. generation of voltage. ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines A 220 V, DC shunt motor is operating at a speed of 1440 rpm. The armature resistance is 1.0 Ω and armature current is 10 A. of the excitation of the machine is reduced by 10%, the extra resistance to be put in the armature circuit to maintain the same speed and torque will be 2 .1 Ω 1.79 Ω 1.8 9 Ω 3.1 Ω 2 .1 Ω 1.79 Ω 1.8 9 Ω 3.1 Ω ANSWER DOWNLOAD EXAMIANS APP
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