Electrical Machines Which of the following alternators contain large number of poles? None of these Hydro alternators. Aame in both alternators. Turbo alternators. None of these Hydro alternators. Aame in both alternators. Turbo alternators. ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines A 3-phase, 50 Hz, 4 pole induction motor is running at 1440 rpm. Find the rotor efficiency? 94% 96% 95% 92% 94% 96% 95% 92% ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines The synchronous reactance( Xs) is the combined reactance due to armature reaction and leakage flux reactance either due to armature reaction or leakage flux reactance due to armature reaction of the machine reactance due to leakage flux combined reactance due to armature reaction and leakage flux reactance either due to armature reaction or leakage flux reactance due to armature reaction of the machine reactance due to leakage flux ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines A 240 V, dc shunt motor draws 15 A while supplying the rated load at a speed of 80 rad/s. The armature resistance is 0.5 W and the field winding resistance is 80 W. The net voltage across the armature resistance at the time of plugging will be 6 V 240 V 234 V 474 V 6 V 240 V 234 V 474 V ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines When the rotor of a 3 phase induction motor is blocked then the slip is 0.7. 0.54. 1. 0.3. 0.7. 0.54. 1. 0.3. ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines In induction motors, there is large decrease in maximum power factor when the dispersion coefficient is ________________. remains same. decreased. kept constant to certain value. increased. remains same. decreased. kept constant to certain value. increased. ANSWER DOWNLOAD EXAMIANS APP
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