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