Electrical Machines What is/are the necessary conditions for voltage build up in self excited generator? All of these Field winding should be properly connected to armature winding. Poles should contain residual flux. Field winding resistance should be less than critical resistance. All of these Field winding should be properly connected to armature winding. Poles should contain residual flux. Field winding resistance should be less than critical resistance. ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines Reactive power generated or delivered significantly depends on excitation. both 1 and 2. frequency. load angle. excitation. both 1 and 2. frequency. load angle. ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines The flux involved in the emf equation of a transformer has total value. average value. rms value. maximum value. total value. average value. rms value. maximum value. ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines The functions of inter poles are nullify reactance voltage and improve the commutation. reduce cross magnetization effect and improve commutation both 1 and 2 None of these nullify reactance voltage and improve the commutation. reduce cross magnetization effect and improve commutation both 1 and 2 None of these ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines The current drawn by a 220 V DC series motor of armature resistance 0.5Ω and back back emf 200 V is 40 A. 440 A. 44 A. 400 A. 40 A. 440 A. 44 A. 400 A. ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines At slip s = 1 torque developed in machine is electromagnetic torque. starting torque. none. maximum torque. electromagnetic torque. starting torque. none. maximum torque. ANSWER DOWNLOAD EXAMIANS APP
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