Electrical Machines An induction motor has synchronous speed of 1500 rpm. What will be the slip when it is running at a speed of 1450 rpm? +3.33% +3% -3.33% -3% +3.33% +3% -3.33% -3% ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines From no load to full load the slip will not change. None of these slightly increase. slightly decrease. not change. None of these slightly increase. slightly decrease. ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines In a resistance split phase motor, what is the range of torque angle? 90° 25° to 30° 70° to 85° 0° 90° 25° to 30° 70° to 85° 0° ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines For higher values of armature, the speed of a DC series motor is Proportional to the square of armature current. Proportional to armature current. Inversely proportional to armature current. Constant. Proportional to the square of armature current. Proportional to armature current. Inversely proportional to armature current. Constant. ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines A large series motor is never started without some mechanical load on it because otherwise it will draw too much current. open fuse or circuit breaker. produce sparking at brushes. develop excessive speed and damage itself. draw too much current. open fuse or circuit breaker. produce sparking at brushes. develop excessive speed and damage itself. ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines An IM cannot run at synchronous speed because induction motor will become synchronous motor. none of above. rotor torque will not be produced. air friction will prevent it. induction motor will become synchronous motor. none of above. rotor torque will not be produced. air friction will prevent it. ANSWER DOWNLOAD EXAMIANS APP
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