Electrical Machines Maximum allowable moisture content of power transformer insulating oil is generally taken as 35 ppm. 45 ppm. 25 ppm. 20 ppm. 35 ppm. 45 ppm. 25 ppm. 20 ppm. ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines In induction motor when the length of the air gap is increased, the magnetizing current of the motor increases while the short circuit current __________________. decreased. increased. kept constant to certain value. remains unchanged. decreased. increased. kept constant to certain value. remains unchanged. ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines Poles of DC machine are often laminated to reduce iron weight. reduce armature reaction. dissipate more heat. reduce pulsation loss. reduce iron weight. reduce armature reaction. dissipate more heat. reduce pulsation loss. ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines A DC series motor is running with a divertor connected across its field winding. If the divertor resistance is reduced then the speed of the motor will decrease. remain unaltered. become execessively high. increase. decrease. remain unaltered. become execessively high. increase. ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines If the back emf in DC motor vanishes suddenly the motor will run at very low speed. run at very high speed. start haunting. burn. run at very low speed. run at very high speed. start haunting. burn. ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines In most condition which frame of motor will be preferred? Drip proof. Open type. Totally enclosed fan coiled. Splash proof. Drip proof. Open type. Totally enclosed fan coiled. Splash proof. ANSWER DOWNLOAD EXAMIANS APP
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