09.01 Open Vs Closed Loop Systems - Quiz

Section 9.1 Quiz: Open vs closed loop systems

1. What is the main difference between open loop and closed loop control systems?

   • Open loop systems are faster than closed loop systems
   • Open loop systems use feedback while closed loop systems don’t
   • Closed loop systems use feedback while open loop systems don’t {data-correct}
   • There is no significant difference between them

2. Which of the following is an example of an open loop system?

   • Cruise control in a car
   • Thermostat controlling room temperature
   • Microwave oven heating for a set time {data-correct}
   • Automatic focus camera

3. What type of feedback is most commonly used in control systems to maintain stability?

   • Positive feedback
   • Negative feedback {data-correct}
   • Neutral feedback
   • Variable feedback

4. In a closed loop system, what happens when the control gain is set too high?

   • The system responds too slowly
   • The system becomes more stable
   • The system may oscillate or become unstable {data-correct}
   • The system uses less energy

5. Which statement about open loop systems is correct?

   • They automatically adjust to disturbances
   • They are more expensive than closed loop systems
   • They cannot correct for errors or disturbances {data-correct}
   • They always provide better accuracy

6. In the cruise control example, what would happen if the system operated in open loop mode on a steep hill?

   • The speed would be maintained perfectly
   • The speed would likely decrease due to gravity {data-correct}
   • The system would automatically increase throttle
   • The car would accelerate uncontrollably

7. What is a key advantage of closed loop systems over open loop systems?

   • Lower cost
   • Simpler design
   • Ability to correct for disturbances {data-correct}
   • Faster response time

8. Which factor does NOT typically affect system stability in closed loop control?

   • Control gain
   • System delays
   • The color of the system housing {data-correct}
   • External disturbances