All of the following statements about DC brushless (DCBL) motors are true EXCEPT:
A. A typical DCBL motor is 85-90 percent efficient, and higher efficiencies have been produced.
B. As a DCBL rotor turns, its permanent magnetic fields interact with the stator's electromagnetic fields.
C. Magnetic attraction pulls the rotor along in its continuing rotation, causing torque output.
D. Maximum torque production of a DCBL motor occurs immediately, from when it starts until about 3,000 rpm.
Answer: D
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