Ontario Z Endorsement Knowledge Exam (Air Brake) -05 1 / 20 Tractor protection valve stops the air supply of ______ when closed. Spring brakes Tractor brakes Trailer service line All brakes 2 / 20 How often the air tanks should be drained? Weekly Monthly Never Daily 3 / 20 Trailer service brakes can be operated by_____? Brake pedal Neither of these Hand valve Hand valve or Brake Pedal 4 / 20 The air, in the air brake system, first enters into the ______. Service tank Dry tank Air compressor Supply tank 5 / 20 When pushrod exceeds the specified limit then brakes must be _____ heated Changed Adjusted Lubricated 6 / 20 If pressure drops below ____ PSI, trailer supply valve will automatically close and stop the air supply to the trailer 60 50 90 45 7 / 20 Where are air brake chambers attached? On air tanks On front wheels only On each wheel On rear wheels only 8 / 20 While performing pushrod stroke measurement, _______. truck must be moving trailer must be detached engine should be off engine should be on 9 / 20 Trailer brake system first supplies air to _______ Service brake Spring brakes To all the brakes equally Depends upon the priority set by manufacturer 10 / 20 Which brakes do you apply to perform 'Tug Test' on trailer? Tractor brakes Any Brakes No brakes Spike Brakes 11 / 20 What will you do if Low Air Warning device is activated on the road? Inform the company after finishing the trip Keep driving at the same speed Pull out and stop immediately Keep moving slowly 12 / 20 The brake pedal should be ______, while measuring the pushrod stroke. partially pressed fully pressed not pressed any of these 13 / 20 To perform the air brake test, vehicle should be parked at ______ . downhill level surface in the garage uphill 14 / 20 If the connection port is _______, this will be a short or regular stroke chamber. Square Triangle Hexagonal Round 15 / 20 When the air pressure goes on or below _____, low air pressure warning device must activate. 80 PSI 30 PSI 55 PSI 90 PSI 16 / 20 From where the air compressor takes power? Wheels Engine Brakes Battery 17 / 20 Air pressure must go from 85 PSI to 100 PSI within 2 minutes, while engine running at ____RPM to ____ RPM. 500, 700 1000, 1200 1200, 1500 600, 900 18 / 20 What is the colour of the Service Line couplings? Yellow Red Green Blue 19 / 20 If air line has rubbing marks but there is no air leak then drive for one day note down in the log book and move replace it before moving apply duct tape on it 20 / 20 If the connection port is _______, you will require a long stroke brake chamber. Square Triangle Round Hexagonal Your score is 0% Restart quiz
