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Assignment 1, Continued - 14081_554
Assignment 1, Continued - 14081_556

Equipment Operator Basic - Beginning construction equipment operators manual
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1-22. What is the purpose of a primary fuel filter on a diesel fuel system? 1. Filters  all  foreign  matter from the diesel fuel 2. Filters  minute  traces  of foreign  matter  from  the diesel fuel 3. Filters the air deposits from diesel fuel 4. Filters  the  larger  foreign matter  from  the  diesel  fuel 1-23. A good practice is to drain one gallon of fuel out of the filter into a container or onto a rag during  prestart  operations. 1. True 2. False 1-24. What is the primary function of the  secondary  filter? 1. To  protect  the  carburetor 2. To protect the fuel injection pump 3. To protect the fuel transfer pump 4. To  protect  the  fuel  supply lines 1-25. What function of the engine creates a  partial  vacuum  in  the  carburetor throat  that  allows  low-pressure  air to rush by the fuel nozzle? 1. The upward compression stroke of the piston 2. The exhaust stroke driven turbocharger 3. The  downward  intake  stroke of the piston 4. The power stroke of the piston 1-26. The  primary  function  of  the injection pump is to supply low- pressure  fuel  for  injection. 1. True 2. False 1-27. What is the basic function of injector  nozzles? 1. Forms a restriction that causes more fuel and less air to be injected  into  the  combustion chamber  of  each  cylinder 2. Injects fuel into the float chamber  of  the  carburetor 3. Sprays the fuel in atomized form  into  the  combustion chamber  of  each  cylinder 4. Sprays  a  rich  air-to-fuel mixture  in  the  cylinders  for the hard job of starting diesel engines 1-28. Glow  plugs  and  injector  nozzles are  installed  in  the  precombustion chamber of the cylinder head. 1. True 2. False Learning  Objective:  Recognize the  principles  and  components of air induction systems. 1-29. Which of the following is NOT the function of a diesel engine air induction  system? 1. Cleans the intake air 2. Silences  the  intake  noise 3. Furnishes  air  for  supercharging 4. Controls the fuel and air mixture 1-30. The power that drives the turbine wheel  on  a  turbocharger  is generated  by  what  source? 1. Exhaust  gases 2. A hot flame 3. Electrical  sparks 4. High-pressure  air 1-31. Poor combustion is a result of a buildup of dust and dirt in the  air  cleaner  passages  that has choked off the air supply. 1. True 2. False 3







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