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