Electrical Machines Armature reaction in DC generators will result in reduction in generated emf. open circuit. increase in slip. short circuit. reduction in generated emf. open circuit. increase in slip. short circuit. ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines If the excitation is increased, the power factor is leading power factor None of these unity power factor lagging power factor leading power factor None of these unity power factor lagging power factor ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines Find the reactance voltage when current is changed from -2A to 2A in 4 sec and self inductance is 1H? 0 V 4 V 2 V 1 V 0 V 4 V 2 V 1 V ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines The material used for commutator brushes is mostly copper. carbon. cast iron. mica. copper. carbon. cast iron. mica. ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines In a DC generator, the armature reaction results in demagnetization of leading & magnetization of trailing pole tip. magnetization of inter poles. demagnetization of centers of poles. magnetization of leading and demagnetization of trailing pole tip. demagnetization of leading & magnetization of trailing pole tip. magnetization of inter poles. demagnetization of centers of poles. magnetization of leading and demagnetization of trailing pole tip. ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines Stability of a synchronous motor ---------- with the increase in excitation. any of the above decreases remains unaffected increases any of the above decreases remains unaffected increases ANSWER DOWNLOAD EXAMIANS APP
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