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Fun, engaging games to boost memory, math fluency, typing speed, and English skills—perfect for learners of all ages.
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Knowledge
Practice Questions
Test your understanding with targeted questions related to the topic.
Question 1
Easy
What is the function of the stator in a DC motor?
💡 Hint: Think about the parts that remain stationary while the rotor does the work.
Question 2
Easy
What is the function of the brushes in a DC motor?
💡 Hint: Consider which part needs to maintain electrical contact.
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 does the stator provide in a DC motor?
- Magnetic field
- Electrical energy
- Mechanical energy
💡 Hint: Think about the stationary part of the motor.
Question 2
True or False: The brushes are responsible for changing current direction in the motor.
- True
- False
💡 Hint: Think about which part connects the electrical supply.
Solve 2 more questions and get performance evaluation
Challenge Problems
Push your limits with challenges.
Question 1
A DC motor has a stator made of permanent magnets and a rotor with 200 turns of wire. If the supplied current doubles, discuss the effects on torque and speed of the motor.
💡 Hint: Consider how torque relates to the interaction between magnetic fields in the rotor.
Question 2
Given a DC motor where the brushes have worn down and are not making proper contact, analyze how this will affect the motor's efficiency and possible failure modes.
💡 Hint: Think about what happens when electricity cannot flow properly.
Challenge and get performance evaluation