Ontario Z Endorsement Knowledge Exam (Air Brake) -01 1 / 20 _________ brake system doesn't have pushrod. Hydraulic brakes Wedge brakes None of these Drum Brake 2 / 20 Which vehicles have mostly DD3 Safety Actuators? Buses Trucks Cars Bikes 3 / 20 What do you check while inspecting brake drums? Moisture Date of expiry Rust Crakes and Holes 4 / 20 The most common brake chamber size is ______. 20 30 36 24 5 / 20 When uncoupling, trailer supply valve must be ______ Removed Pushed in None of these Pulled out 6 / 20 What is a caging bolt used for? To disable the brake chamber To adjust the brakes To give more power to the brake chamber To protect the air lines 7 / 20 What can different size chambers on same axle cause? All of these No braking low mpg Imbalanced braking 8 / 20 The brake pedal should be ______, while measuring the pushrod stroke. partially pressed any of these not pressed fully pressed 9 / 20 If your truck is equipped with manual slack adjusters, readjustment can be done by Anyone Truck driver Certified Technician Safety manager 10 / 20 ______ in the brake system causes brake linings contamination. Water Air None Grease and oil 11 / 20 On which part of the brake system 'Brake linings' are attached? S Cam Brake chambers Rotors Brake shoes 12 / 20 What is the use of the Spring Brakes? To stop at the traffic light None for parking and an emergency. To prevent from skidding 13 / 20 What things you check while testing Air Brake chambers? Slack adjustment Cracks Holes All of the above 14 / 20 What is the function of the governor in air brake system? regulate air pressure keep the engine cool remove the moisture apply the brakes 15 / 20 When air pressure reaches _____ PSI to ____ PSI lower than the cut out pressure, governor must cut in. 22, 25 40, 60 15, 25 30, 35 16 / 20 Where you can find the safety valve? S Cam On the dashboard Brake chamber Air Tank 17 / 20 Who can repair the Automatic Slack Adjusters? Safety Manager Owner Operator Certified Technician Driver 18 / 20 Maximum governor cut out is ____ PSI. 120 130 145 100 19 / 20 When air pressure drop to ____ PSI, spring brakes will start to apply. 60 35 90 55 20 / 20 Which type of brake system has "S" Cam? All brakes systems Drum brakes Disc brakes None Your score is 0% Restart quiz
