ate 207 Exam Questions and Answers
Graded A+
What is the function of booster pumps in a fuel system? - Correct answer-To keep
the fuel under pressure and reduce vapor formation
What is the purpose of the manual mixture control in a fuel-injection system? -
Correct answer-To correct for enrichment at altitude
What is the purpose of water injection in an aircraft engine? - Correct answer-To
increase air density and compensate for decreased thrust
How is the water injection speed reset servo actuated? - Correct answer-By a
microswitch in the fuel control activated when the power lever is moved
What are the most common fuels used in aircraft engines? - Correct answer-
AVGAS and Jet A
Where is the fuel discharge nozzle located in a Continental fuel-injection system? -
Correct answer-In the cylinder head, directing fuel into the intake port
What is the purpose of a fuel heater in a gas turbine engine? - Correct answer-To
prevent formation of ice in the fuel filters
©COPYRIGHT 2025, ALL RIGHTS RESERVED 1
, What should be done before removing a carburetor? - Correct answer-Make sure
the fuel shutoff valve is closed
What can vapor lock cause in the fuel system? - Correct answer-Partial or complete
interruption of fuel flow
What should be done to inspect fuel tanks? - Correct answer-Inspect the tanks for
corrosion on the external surfaces and for security of attachment
What is the purpose of the idling system in a float-type carburetor? - Correct
answer-To provide fuel at low throttle settings
What is the purpose of the float-operated needle valve in a float-type carburetor? -
Correct answer-To maintain a nearly constant level of fuel in the float chamber
What is the effect of excessively rich idle mixtures? - Correct answer-Incomplete
combustion and spark plug fouling
What should be done after adjusting the idle mixture? - Correct answer-Recheck it
several times to determine definitively that the mixture is correct and remains
constant
What is the purpose of the mixture control system in a carburetor? - Correct
answer-To select the ratio of fuel to air in the mixture
©COPYRIGHT 2025, ALL RIGHTS RESERVED 2
Graded A+
What is the function of booster pumps in a fuel system? - Correct answer-To keep
the fuel under pressure and reduce vapor formation
What is the purpose of the manual mixture control in a fuel-injection system? -
Correct answer-To correct for enrichment at altitude
What is the purpose of water injection in an aircraft engine? - Correct answer-To
increase air density and compensate for decreased thrust
How is the water injection speed reset servo actuated? - Correct answer-By a
microswitch in the fuel control activated when the power lever is moved
What are the most common fuels used in aircraft engines? - Correct answer-
AVGAS and Jet A
Where is the fuel discharge nozzle located in a Continental fuel-injection system? -
Correct answer-In the cylinder head, directing fuel into the intake port
What is the purpose of a fuel heater in a gas turbine engine? - Correct answer-To
prevent formation of ice in the fuel filters
©COPYRIGHT 2025, ALL RIGHTS RESERVED 1
, What should be done before removing a carburetor? - Correct answer-Make sure
the fuel shutoff valve is closed
What can vapor lock cause in the fuel system? - Correct answer-Partial or complete
interruption of fuel flow
What should be done to inspect fuel tanks? - Correct answer-Inspect the tanks for
corrosion on the external surfaces and for security of attachment
What is the purpose of the idling system in a float-type carburetor? - Correct
answer-To provide fuel at low throttle settings
What is the purpose of the float-operated needle valve in a float-type carburetor? -
Correct answer-To maintain a nearly constant level of fuel in the float chamber
What is the effect of excessively rich idle mixtures? - Correct answer-Incomplete
combustion and spark plug fouling
What should be done after adjusting the idle mixture? - Correct answer-Recheck it
several times to determine definitively that the mixture is correct and remains
constant
What is the purpose of the mixture control system in a carburetor? - Correct
answer-To select the ratio of fuel to air in the mixture
©COPYRIGHT 2025, ALL RIGHTS RESERVED 2
