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- Subject
- D.C. Motorselectrical-engineering-mcqs › d-c-motors
- Published
- 2 Jul 2018
- Last updated
- 28 May 2026
Explanation
Maximum efficiency in a D.C. generator occurs when the variable losses (such as copper losses) are equal to the constant losses (including core, mechanical, and stray losses). This balance ensures the generator operates at its most efficient point.
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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