Page 6 - Workbook_Sample

Chapter 3 - Engines: Knowledge of Engines Is Power
3-5

44.
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
42.
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
49.
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
50.
With an increase in altitude the air becomes thinner and
doesn’t _____ as much for a given volume.

A. weigh
B. count
C. vary