The cruise control of a car continually monitors the vehicles speed. As the vehi

Question

The cruise control of a car continually monitors the vehicles speed. As the vehicle's speed rises above the set point the cruise control closes the throttle to slow the vehicle. As the vehicle's speed slows below the set point, the cruise control opens the throttle to speed the vehicle up. Select one of the following that best describes this system: Positive Feedback Negative No Feedback No Feedback Sometimes one can hear "feedback" in a public address system. This happens when the microphone is placed in front of the speaker. The microphone detects some amount of noise from the speaker. The system amplifies this noise and the speaker plays it louder. The microphone amplifies this new noise level. Select one of the following that best describes this system: No Feedback Negative Feedback Positive Feedback

Explanation / Answer

Question 1

Here the velocity vehicle controling by cruise to fix in given limit and there was no amplification or reduction in the magnitude of velocity so there is no feedback

Answer: c. No feedback

Question 2

In this case the amplitude of the signal got amplified by external source. It means we gave somepositive feedback

Answer: c. Positive feedback

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