Question 129Electricity/Electronics - QMED70% to pass
In a short-shunt cumulatively compound-wound DC motor, how is the shunt field connected?
AI Explanation
The correct answer is C) in parallel with the armature.
In a short-shunt cumulatively compound-wound DC motor, the shunt field winding is connected in parallel with the armature. This allows the shunt field to maintain a constant magnetic flux, regardless of changes in armature current. The series field is connected in series with the armature, providing additional torque as the armature current increases.
The other options are incorrect because: A) the shunt field is not connected in series with the armature, B) the shunt field is not connected in series with both the armature and series field, and D) the shunt field is not connected in parallel with both the armature and series field.
Related Questions
#127 Which of the listed conditions might contribute to very rapid wearing of a DC machine's commutator bars? #128 If an unloaded DC compound motor's shunt field were weakened by excessive rheostat resistance or by an open circuit, how would the motor respond? #130 Why are motor controllers seldom troubled by grounds? #131 Which device will stop the motor shown in the illustration in case of a short-circuit (high current) motor fault? Illustration EL-0080 #132 In the illustrated motor controller, the motor fails to start. A voltmeter reading between 1 and 5 reads line voltage, while the voltmeter reading between 2 and 5 reads 0 VAC. What is most likely the problem? Illustration EL-0007