QuestionAugust 3, 2025

21. What are two basic problem areas that windshield wipers have? __ 22. What does hydrophobic mean? __ 23. What is the result of using a rain repellant system on dry windows? __ 24. What should be done during an operational check of a windshield wiper system? __ 25. What is the theory of operation of chemical rain repellant? __ 26. When should an operational check be performed on a windshield wiper system? __ 27. What is the principle of operation of pneumatic rain removal systems? __

21. What are two basic problem areas that windshield wipers have? __ 22. What does hydrophobic mean? __ 23. What is the result of using a rain repellant system on dry windows? __ 24. What should be done during an operational check of a windshield wiper system? __ 25. What is the theory of operation of chemical rain repellant? __ 26. When should an operational check be performed on a windshield wiper system? __ 27. What is the principle of operation of pneumatic rain removal systems? __
21. What are two basic problem areas that windshield wipers have? __ 22. What does hydrophobic mean? __ 23. What is the result of using a rain repellant system on dry windows? __ 24. What should be done during an operational check of a windshield wiper system? __ 25. What is the theory of operation of chemical rain repellant? __ 26. When should an operational check be performed on a windshield wiper system? __ 27. What is the principle of operation of pneumatic rain removal systems? __

Solution
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Answer

21. Streaking and noise. ### 22. Repelling water. ### 23. Smearing or haziness. ### 24. Ensure smooth movement, check for wear, verify function. ### 25. Creates a hydrophobic surface for water beading. ### 26. Regularly, especially before adverse weather. ### 27. Use air pressure to remove rain. Explanation 1. Identify Problem Areas of Windshield Wipers Two basic problem areas are streaking and noise. 2. Define Hydrophobic Hydrophobic means repelling water. 3. Result of Using Rain Repellant on Dry Windows It can cause smearing or haziness. 4. Operational Check of Windshield Wiper System Ensure wipers move smoothly, check for wear, and verify proper function. 5. Theory of Operation of Chemical Rain Repellant It creates a hydrophobic surface that causes water to bead and roll off. 6. Timing for Operational Check Perform checks regularly, especially before adverse weather conditions. 7. Principle of Pneumatic Rain Removal Systems Use air pressure to blow rain off the windshield.

Explanation

1. Identify Problem Areas of Windshield Wipers<br /> Two basic problem areas are streaking and noise.<br /><br />2. Define Hydrophobic<br /> Hydrophobic means repelling water.<br /><br />3. Result of Using Rain Repellant on Dry Windows<br /> It can cause smearing or haziness.<br /><br />4. Operational Check of Windshield Wiper System<br /> Ensure wipers move smoothly, check for wear, and verify proper function.<br /><br />5. Theory of Operation of Chemical Rain Repellant<br /> It creates a hydrophobic surface that causes water to bead and roll off.<br /><br />6. Timing for Operational Check<br /> Perform checks regularly, especially before adverse weather conditions.<br /><br />7. Principle of Pneumatic Rain Removal Systems<br /> Use air pressure to blow rain off the windshield.
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