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Questions and Answers
What is the characteristic of a series motor compared to separately and shunt excited motors?
What is the characteristic of a series motor compared to separately and shunt excited motors?
- It has a higher efficiency at low speeds
- It has a lower starting torque
- It has a constant speed regardless of load
- It requires less current for the same torque (correct)
What is the main advantage of a compound motor over a shunt motor?
What is the main advantage of a compound motor over a shunt motor?
- It provides high starting torque (correct)
- It has lower maintenance requirements
- It is more cost-effective
- It operates at a more constant speed
How does the total field flux of a compound motor differ from that of a shunt motor?
How does the total field flux of a compound motor differ from that of a shunt motor?
- It is always lower than that of a shunt motor
- It depends on the combination of series and shunt field strengths (correct)
- It is inversely proportional to the armature current
- It remains constant regardless of load variations
What happens to the speed of a differential compound motor when the series field strength increases?
What happens to the speed of a differential compound motor when the series field strength increases?
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What is the relationship between armature voltage, field flux, and torque in speed control of DC motors?
What is the relationship between armature voltage, field flux, and torque in speed control of DC motors?
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