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