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