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Practice Questions
Test your understanding with targeted questions related to the topic.
Question 1
Easy
What is the primary function of a DC motor?
💡 Hint: Think about the main energy conversion process.
Question 2
Easy
What part of a DC motor produces the magnetic field?
💡 Hint: This part is stationary and supports the structure.
Practice 4 more questions and get performance evaluation
Interactive Quizzes
Engage in quick quizzes to reinforce what you've learned and check your comprehension.
Question 1
What type of DC motor allows independent control of field current and armature current?
- Series DC Motor
- Shunt DC Motor
- Separately Excited DC Motor
💡 Hint: Think about which motor type provides the most precise control.
Question 2
True or False: Back EMF increases as the speed of the motor increases.
- True
- False
💡 Hint: Consider the relationship between rotation and induced electromotive force.
Solve 1 more question and get performance evaluation
Challenge Problems
Push your limits with challenges.
Question 1
A DC shunt motor runs at 1500 RPM drawing 5 A from a 240 V supply with an armature resistance of 0.5 Ohm. Calculate the back EMF generated and the torque produced if the flux per pole is 0.02 Wb.
💡 Hint: Break the problem down into the back EMF and then use the torque formula step by step.
Question 2
Discuss the implications of reducing the field current in a shunt motor and how it affects speed and torque.
💡 Hint: Consider the balance between torque and speed when adjusting motor parameters.
Challenge and get performance evaluation