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