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- Subject
- D.C. Motorselectrical-engineering-mcqs › d-c-motors
- Published
- 2 Jul 2018
- Last updated
- 28 May 2026
Explanation
As the load on a DC shunt motor increases, the motor slows down slightly because the back electromotive force (back EMF) decreases. This reduction in back EMF allows more current to flow through the armature, providing the extra torque needed to handle the increased load.
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.Why is it unsafe to start a DC series motor when it is running without any load?
- 7.Which technique is commonly employed to regulate the speed of a DC shunt motor?
- 8.What will happen to the speed of a DC shunt motor if the resistance in its field winding is raised?
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