USCG Exam PracticeElectrical fundamentals — DC/AC, motors, distribution
Which type of DC motor is most appropriate for driving a centrifugal pump where nearly constant speed from no load to full load is required?
- A. Series motor
- ✓ Shunt motorCorrect
- C. Compound motor
- D. Wound-rotor motor
Why B is correct
A shunt motor runs at nearly constant speed from no load to full load and gives moderate starting torque, making it suitable for pumps and fans. A series motor has widely varying speed with load and would overspeed if unloaded. (NEETS Mod. 5 §2-2)
Cited:NEETS Mod. 5 §2-2