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