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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 a DC motor?
💡 Hint: Remember what a motor does.
Question 2
Easy
What does the commutator do in a DC motor?
💡 Hint: Think about how it keeps the motor running.
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 a DC motor convert?
- Thermal energy to mechanical energy
- Electrical energy to mechanical energy
- Mechanical energy to electrical energy
💡 Hint: Think about the primary function of a motor.
Question 2
True or False: The commutator maintains the rotational direction of the coil.
- True
- False
💡 Hint: Consider the importance of current direction.
Solve 1 more question and get performance evaluation
Challenge Problems
Push your limits with challenges.
Question 1
A DC motor uses a coil with 100 turns, drawing 2A when powered. If you double the turns and the current remains the same, how does this affect the torque produced?
💡 Hint: Consider how more turns affect the interaction with the magnetic field.
Question 2
Given a scenario where a DC motor operates but stops turning after commutation, describe the likely issue and its solution.
💡 Hint: Think about what might obstruct the flow of current.
Challenge and get performance evaluation