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