Electrical Machines What is the effect of armature reaction ? Armature flux distorts the main field flux. Both option B and C. Armature flux weakens the main field flux. None of the options. Armature flux distorts the main field flux. Both option B and C. Armature flux weakens the main field flux. None of the options. ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines Which type motors are preferred for lathes? Synchronous motor. Either A or B. DC shunt motors. Squirrel Cage induction motor. Synchronous motor. Either A or B. DC shunt motors. Squirrel Cage induction motor. ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines A 4-pole DC generator runs at 1500 rpm. The frequency of current in the armature winding is: 100 Hz. 50 Hz. 25 Hz. Zero Hz. 100 Hz. 50 Hz. 25 Hz. Zero Hz. ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines In speed control of DC Series motor, speed lower than the rated speed can be obtained by Connecting an additional resistance in the armature circuit. Any of the above. Connecting an additional resistance in the field circuit. Connecting an additional resistance in stator circuit. Connecting an additional resistance in the armature circuit. Any of the above. Connecting an additional resistance in the field circuit. Connecting an additional resistance in stator circuit. ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines For a standard frequency the machine operates at a particular speed known as any of the above. slip speed. normal speed. synchronous speed. any of the above. slip speed. normal speed. synchronous speed. ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines Which of these types of motor is self starting? Single phase induction motor. Poly-phase induction motor. None of these. Poly-phase synchronous machine. Single phase induction motor. Poly-phase induction motor. None of these. Poly-phase synchronous machine. ANSWER DOWNLOAD EXAMIANS APP
EXAMIANS