Electrical Machines The armature core of a DC machine is laminated to minimise hysteresis loss eddy-current loss mechanical loss temperature rise hysteresis loss eddy-current loss mechanical loss temperature rise ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines What is the emf generated by a 4 pole Lap connected DC Motor rotating at 1500 rpm having 1000 conductors and useful flux per pole is 0.4 mWb. 20 volts. 10 volts. 40 volts. 30 volts. 20 volts. 10 volts. 40 volts. 30 volts. ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines Synchronous reactance of an alternator represents a reactance operating at synchronous speed field winding reactance armature reactance and leakage reactance All of these a reactance operating at synchronous speed field winding reactance armature reactance and leakage reactance All of these ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines In a synchronous motor torque or load angle δ ------------- with increase in load None of these increases decreases remains unaffected None of these increases decreases remains unaffected ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines A 3 stack stepper motor has 12 teeth on stator as well as on rotor. Determine the step size when each stack excited? 24°. 30°. 10°. 45°. 24°. 30°. 10°. 45°. ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines Which of following methods are suitable for the speed control of squirrel cage induction motor? 1. Voltage control. 2. Frequency control. 3. Pole changing method. 4. Rotor resistance control select the correct answer using the codes given below:- 1, 3 and 4. 2 and 4. 1, 2 and 3. 2, 3 and 4. 1, 3 and 4. 2 and 4. 1, 2 and 3. 2, 3 and 4. ANSWER DOWNLOAD EXAMIANS APP
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