Electrical Machines Two mechanically coupled alternators deliver power at 50 Hz and 60 Hz respectively. The highest speed of the alternators is 3600 rpm. 3000 rpm. 600 rpm. 500 rpm. 3600 rpm. 3000 rpm. 600 rpm. 500 rpm. ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines In DC generator, the electricity produced in armature is DC. AC. armature is not present in DC generator. None of these DC. AC. armature is not present in DC generator. None of these ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines If an additional resistance is connected in series with a DC motor operating at rated speed, the speed of the motor will Oscillate around the normal speed. Increase. Remain unaltered. Reduce. Oscillate around the normal speed. Increase. Remain unaltered. Reduce. ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines The teeth in the armature of a DC machines are sometimes skewed. This is done to reduce eddy electric current loss. copper loss. hysteresis loss. vibrations. eddy electric current loss. copper loss. hysteresis loss. vibrations. ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines In a transformer which of the following losses are zero? Copper loss Rotational loss All of these Iron loss Copper loss Rotational loss All of these Iron loss ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines Scott connections are used for any of the above. three phase to single phase transformation. single phase to three phase transformation. three phase to two phase transformation. any of the above. three phase to single phase transformation. single phase to three phase transformation. three phase to two phase transformation. ANSWER DOWNLOAD EXAMIANS APP
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