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