Electrical Machines Hopkinson test is conducted under which of the following condition? any of the above full load half load no load any of the above full load half load no load ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines Two DC generators having equal open-circuit emfs but slight different load characteristics are operating in parallel, then the machine will share load equally. the machine with more drooping characteristic will supply more load. None of these the machine with more drooping characteristic will supply less load. the machine will share load equally. the machine with more drooping characteristic will supply more load. None of these the machine with more drooping characteristic will supply less load. ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines The armature of a DC motor is laminated to reduce eddy current loss. hysteresis loss. friction and windage loss. copper loss. eddy current loss. hysteresis loss. friction and windage loss. copper loss. ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines An inverted V curve of synchronous motor shows variation of supply voltage and excitation current at constant load. power factor and supply voltage during hunting. supply voltage and field current at constant excitation. power factor and DC excitation at constant load. supply voltage and excitation current at constant load. power factor and supply voltage during hunting. supply voltage and field current at constant excitation. power factor and DC excitation at constant load. ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines The speed of a cumulatively compound DC motor can be controlled by varying Armature voltage control. Shunt field resistance control. Any of above. Armature resistance control. Armature voltage control. Shunt field resistance control. Any of above. Armature resistance control. ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines If the full load speed of 3-phase, 50Hz induction motor is 950 rpm, what is its half load speed nearly equals to? 950 rpm 1000 rpm 940 rpm 975 rpm 950 rpm 1000 rpm 940 rpm 975 rpm ANSWER DOWNLOAD EXAMIANS APP
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