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