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