Electrical Machines Which of the following is/are effects of armature reaction? increase the maintenance and repair All of these increase the iron loss increases the design cost increase the maintenance and repair All of these increase the iron loss increases the design cost ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines For small value armature current Ia the torque developed by a DC series motor is proportional to Ia2. Ia. √Ia. 1/Ia. Ia2. Ia. √Ia. 1/Ia. ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines In case of a conductively compensated DC series motor, the compensating winding is provided In parallel with the armature winding. In series with the armature winding. In parallel with the field winding. As a separate unit. In parallel with the armature winding. In series with the armature winding. In parallel with the field winding. As a separate unit. ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines The heat transfer by convection in a transformer least depends on temperature difference. surface area. air velocity. color of the paint. temperature difference. surface area. air velocity. color of the paint. ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines The speed of a DC series motor is Proportional to the armature current. Proportional to the square of the armature current. Proportional to field current. Inversely proportional to the armature current. Proportional to the armature current. Proportional to the square of the armature current. Proportional to field current. Inversely proportional to the armature current. ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines Hysteresis loss will depends on f³ f² f f1.6 f³ f² f f1.6 ANSWER DOWNLOAD EXAMIANS APP
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