09.04 Mechanical Constraints And Subsystem Composition - Quiz

Section 9.4 Quiz: Mechanical constraints and subsystem composition

1. What does “degrees of freedom” mean in a mechanical system?

   • The number of joints in the system
   • The number of independent ways the system can move {data-correct}
   • The maximum speed the system can achieve
   • The weight capacity of the system

2. A 2-joint robot arm operating in a 2D plane has how many degrees of freedom?

   • 1
   • 2 {data-correct}
   • 3
   • 4

3. Which of the following are important considerations for subsystem composition? (Select all that apply)

   • Clear communication protocols between subsystems {data-correct}
   • Collision avoidance and safety margins {data-correct}
   • Coordinated control authority {data-correct}
   • Using identical components in all subsystems

4. What is the primary purpose of a safety margin in collision detection?

   • To reduce system cost
   • To prevent mechanical interference between moving parts {data-correct}
   • To increase system speed
   • To simplify programming

5. In a mobile robot with navigation and manipulation subsystems, what role does the control subsystem play?

   • It replaces all other subsystems
   • It coordinates communication and commands between subsystems {data-correct}
   • It only handles emergency stops
   • It provides power to all components

6. A robot arm has joint limits of: base (±180°), shoulder (±90°), elbow (0° to 135°). If the shoulder is at 100°, what is the problem?

   • The base angle is too high
   • The shoulder angle exceeds its maximum limit {data-correct}
   • The elbow needs to be adjusted
   • There is no problem

7. Which coordination strategy helps prevent conflicts between multiple subsystems?

   • Running all subsystems at maximum speed
   • Using a single control authority with clear communication protocols {data-correct}
   • Operating each subsystem independently
   • Eliminating safety checks

8. What is a key advantage of modular subsystem design in mechatronics?

   • It reduces the total number of components needed
   • It allows individual subsystems to be tested and maintained separately {data-correct}
   • It eliminates the need for coordination between components
   • It makes the system operate faster