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