Page 6 - Workbook_Sample
P. 6

Chapter 3 - Engines: Knowledge of Engines Is Power

                 The Ice Eater: The Carburetor Heater
                                                                 Generally speaking, the use of carburetor heat tends to
          40.                                                    A. decrease engine performance.
          Pulling the carburetor heat lever allows heated air to enter   B. increase engine performance.
          the carburetor, raising the air temperature within its throat   C. have no effect on engine performance.
          as much as _____.
          A. 30°F                                                45.
          B. 90°C                                                Applying carburetor heat will
          C. 90°F                                                A. result in more air going through the carburetor.
                                                                 B. enrich the fuel/air mixture.
                          Carb Ice Symptoms                      C. not affect the fuel/air mixture.

          41.                                                    46.
          If an aircraft is equipped with a fixed pitch propeller and a   What change occurs in the fuel/air mixture when carburetor
          float-type carburetor, the first indication of carburetor ice   heat is applied?
          would most likely be                                   A. A decrease in RPM results from the leaner mixture.
          A. a drop in oil temperature and cylinder head temperature.  B. The fuel/air mixture becomes richer.
          B. engine roughness.                                   C. The fuel/air mixture becomes leaner.
          C. loss of RPM.
                                                                    Apply Carb Heat as a Precautionary Measure
          The presence of carburetor ice in an aircraft equipped    47.
          with a fixed pitch propeller can be verified by applying    A carburetor air temperature gauge allows you to identify
          carburetor heat and noting                             the _____ temperature range where carburetor ice is most
          A. an increase in RPM and then a gradual decrease in   likely to occur.
              RPM.                                               A. critical
          B. a further decrease in RPM and then a constant RPM   B. noncritical
              indication.                                        C. humidity
          C. a further decrease in RPM and then a gradual increase
              in RPM.                                              Carburetor Icing Potential in Different Engines

          43.                                                    48.
          Circle the reference below (A, B, C or D) that best represents   All engines _____ have the same carburetor icing potential.
          the sequence of identifying carb ice, applying carb heat,   A. do
          having the ice dissipate and then removing carb heat.   B. do not
                                                                 C. almost always

                                                                            Fuel: Going With the Flow

                                                                                 The Mixture Control
                                                                 Pulling out (toward you) on the mixture control _____the
                                                                 amount of fuel for a given amount of air entering the engine.
                                                                 A. doesn’t change
                                                                 B. increases
                                                                 C. decreases

                                                                                 The Fuel/Air Mixture
                                                                 With an increase in altitude the air becomes thinner and
                                                                 doesn’t  _____ as much for a given volume.

                                                                 A. weigh
                                                                 B. count
                                                                 C. vary
   1   2   3   4   5   6   7   8   9   10   11