Electrical Machines Maximum allowable moisture content of power transformer insulating oil is generally taken as 35 ppm. 45 ppm. 20 ppm. 25 ppm. 35 ppm. 45 ppm. 20 ppm. 25 ppm. ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines In a 12 pole triplex lap wound DC armature, each conductor can carry current of 100 A. The rated current of this armature is 1200 A. 600 A. 3600 A. 2400 A. 1200 A. 600 A. 3600 A. 2400 A. ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines For very sensitive and wide speed control, the preferable control method is Field control. Multiple voltage control. Armature control. Ward-Leonard control. Field control. Multiple voltage control. Armature control. Ward-Leonard control. ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines What is the actual arrangement of series wound generator? Armature and field both are in series with the load. Armature winding is in series with load. Armature and field both are parallel. Armature and field both are connected. Armature and field both are in series with the load. Armature winding is in series with load. Armature and field both are parallel. Armature and field both are connected. ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines Two 3-phase AC generators are such that one has twice the linear dimensions of the other. The field windings of each are excited to give identical sinusoidal air-gap flux density waveform. Both have the same number of stator slots and identical winding patterns. The conductor/slot in a big generator is K times that of the smaller one. The value of K to get equal no load voltage at same frequency is 1/2. 8. 4. 1/4. 1/2. 8. 4. 1/4. ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines When flux density is constant in a transformer, hysteresis loss varies as f V V² f² f V V² f² ANSWER DOWNLOAD EXAMIANS APP
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