Electrical Machines Maximum allowable moisture content of power transformer insulating oil is generally taken as 45 ppm. 35 ppm. 20 ppm. 25 ppm. 45 ppm. 35 ppm. 20 ppm. 25 ppm. ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines In an auto transformer, for what value of turn ratio, power transferred by inductively and conductively are same? 0.5 0 any of the above 1 0.5 0 any of the above 1 ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines Breather is provided in a transformer to absorb moisture of air during breathing. filter the transformer oil. absorb moisture from air entering in transformer. provide cold air in transformer. absorb moisture of air during breathing. filter the transformer oil. absorb moisture from air entering in transformer. provide cold air in transformer. ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines Which of the following represents the operating region of slip in a 1-phase induction motor? 0 < S < 2 -2 < S < 2 -1 < S < 1 0 < S < 1 0 < S < 2 -2 < S < 2 -1 < S < 1 0 < S < 1 ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines If starter is not used with large DC motor for starting, it will draw a starting current many times its rated full load current. provide execessive voltage drop in line. all of above. damage the armature and commutator. draw a starting current many times its rated full load current. provide execessive voltage drop in line. all of above. damage the armature and commutator. ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines For very sensitive and wide speed control, the preferable control method is Armature control. Multiple voltage control. Field control. Ward-Leonard control. Armature control. Multiple voltage control. Field control. Ward-Leonard control. ANSWER DOWNLOAD EXAMIANS APP
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