Electrical Machines A 5 KVA transformer has a turns ratio of N1/N2 = 10. The impedance of primary winding is 3+j5 ohms while that of secondary winding is 0.5+j0.8 ohms. The impedance of transformer when referred to primary will be 3.5+j5.8 ohms 8+j13 ohms 3.05+j5.08 ohms 53+j85 ohms 3.5+j5.8 ohms 8+j13 ohms 3.05+j5.08 ohms 53+j85 ohms ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines Which of the following is done in speed control of DC motor by field flux control? Inserting an additional resistance in the field circuit. Any of above. Inserting resistance to armature circuit and field circuit. Inserting an additional resistance in the armature circuit. Inserting an additional resistance in the field circuit. Any of above. Inserting resistance to armature circuit and field circuit. Inserting an additional resistance in the armature circuit. ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines In case of a compensated DC series motor, the compensating winding is provided 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. In parallel with the field winding. In parallel with the armature winding. ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines Slot wedges in a dc machine is made up of mild steel. cast iron. silicon steel. fibre. mild steel. cast iron. silicon steel. fibre. ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines Which of the following motors are suitable for computer printer drive ? Hysteresis motor. Stepper motor. Shaded pole motor. Reluctance motor. Hysteresis motor. Stepper motor. Shaded pole motor. Reluctance motor. ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines Hysteresis loss is proportional to f. f2. f3. f1.5. f. f2. f3. f1.5. ANSWER DOWNLOAD EXAMIANS APP
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