DC MOTOR - Practice Mode
1) Which speed control method is used in food mixture motors?
Correct Answer: Series field tapping method
2) Which speed control system provides a smooth variation of speed from zero to above normal?
Correct Answer: Ward-Leonard system control
4) Which type of DC armature winding the front pitch (YF) is greater than back pitch (YB)?
Correct Answer: Retrogressive winding
5) What reduces the cross sectional area of core material for VA rating?
Correct Answer: High alloy sheet