Electrical Machines If starter is not used with large DC motor for starting, it will draw a starting current many times its rated full load current. damage the armature and commutator. all of above. provide execessive voltage drop in line. draw a starting current many times its rated full load current. damage the armature and commutator. all of above. provide execessive voltage drop in line. ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines Rotating magnetic field is produced in an induction motor because of either stator winding or rotor winding. stator winding. rotor winding. None of these either stator winding or rotor winding. stator winding. rotor winding. None of these ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines Demagnetization effects which of the following? reduces the terminal voltage both B and C reduction in main field flux commutation reduces the terminal voltage both B and C reduction in main field flux commutation ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines Two synchronous generators operating in parallel 200 MW and 400 MW respectively. The drooping characteristics of their governors are identical as 4% from no load to full load. Consider the governors operating at 50Hz on no load. What is the operating frequency, if the load is 600 MW? 48 Hz 45 HZ 50 Hz 48.5 Hz 48 Hz 45 HZ 50 Hz 48.5 Hz ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines Which of the following motor has the highest power factor at full load? Resistance split phase Shaded pole Capacitor start Capacitor run Resistance split phase Shaded pole Capacitor start Capacitor run ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines In induction motor wound rotor motor is mainly is used in application where low starting torque. high starting torque. power factor is less. less costly motor is not required. low starting torque. high starting torque. power factor is less. less costly motor is not required. ANSWER DOWNLOAD EXAMIANS APP
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