Electrical Machines To get the speed of DC motor more than normal without wastage of electrical energy _____________ is used. none of above. rheostatic control. Ward Leonard control. any of above method. none of above. rheostatic control. Ward Leonard control. any of above method. ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines In salient pole synchronous machine, maximum power occurs at a load angle of Greater than 90° less than 90° 90° 0° Greater than 90° less than 90° 90° 0° ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines In case of a conductively compensated DC series motor, the compensating winding is provided In parallel with the field winding. In parallel with the armature winding. As a separate unit. In series with the armature winding. In parallel with the field winding. In parallel with the armature winding. As a separate unit. In series with the armature winding. ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines What is the frequency of a alternator, if P = number of poles and N = revolution made per second? 120N / P Hz. 120P / N Hz. 120 / PN Hz. PN / 2 Hz. 120N / P Hz. 120P / N Hz. 120 / PN Hz. PN / 2 Hz. ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines A three phase induction motor has a synchronous speed of 1500 rpm the machine runs at 1460 rpm at a particular load. The slip at this load is ___________. 5 %. 1.5 %. 30 %. 2.67 %. 5 %. 1.5 %. 30 %. 2.67 %. ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines The total core loss of a 400 V, 50 Hz transformer is 2400W, when it is supplied by 200 V, 25 Hz loss is 800W. Calculate eddy current loss and hysteresis loss? 1000W , 1400W 1400W, 1000W 800W, 1600W 1600W, 800W 1000W , 1400W 1400W, 1000W 800W, 1600W 1600W, 800W ANSWER DOWNLOAD EXAMIANS APP
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