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