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- Subject
- D.C. Motorselectrical-engineering-mcqs › d-c-motors
- Published
- 2 Jul 2018
- Last updated
- 28 May 2026
Explanation
Starting a DC series motor without a load can cause it to speed up uncontrollably since the motor's speed increases as the load decreases. This can lead to dangerously high rotational speeds, potentially damaging the motor.
More D.C. Motors MCQs
Practice related questions from the same subject.
- 1.What principle does regenerative braking rely on?
- 2.The Ward Leonard technique for regulating motor speed primarily involves which method?
- 3.Which test is suitable for conducting on a DC series motor?
- 4.What effect does armature reaction have on the speed of a DC motor?
- 5.In a DC motor, how is the interpole winding typically connected?
- 6.Which technique is commonly employed to regulate the speed of a DC shunt motor?
- 7.What will happen to the speed of a DC shunt motor if the resistance in its field winding is raised?
- 8.How does the speed of a DC series motor change as the temperature rises?
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