A 3 – phase semi-converter is feeding a separately excited dc motor at constant field current. The motor can operate in the following condition:

Speed positive or negative, torque positive

Speed positive, torque positive

Speed positive, torque positive or negative

Speed positive or negative, torque positive or negative

A 3 – phase semi-converter is feeding a separately excited dc motor

1.	A 3 – phase semi-converter is feeding a separately excited dc motor at constant field current. The motor can operate in the following condition:
A.	Speed positive, torque positive
B.	Speed positive or negative, torque positive
C.	Speed positive, torque positive or negative
D.	Speed positive or negative, torque positive or negative
Answer» B. Speed positive or negative, torque positive

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A 3 – phase semi-converter is feeding a separately excited dc motor at constant field current. The motor can operate in the following condition:

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