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