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Fuel Metering

Quiz yourself by thinking what should be in each of the black spaces below before clicking on it to display the answer.
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Question
Answer
What is not a factor in the operation of an automatic fuel control unit used on turbine engines?   show
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How is the fuel control adjusted when trimming a turbine engine?   show
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How does an EEC obtain the most effective engine operation?   show
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What is generally turned off when trimming an engine>   show
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What causes the automatic mixture control to respond in reciprocating engines?   show
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What is the fuel metering force of a conventional float-type carburetor in its normal operating range?   show
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show Rich at rated power  
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How would you adjust the level of the float in a float-type carburetor?   show
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How would you achieve better fuel vaporization and control of fuel discharge, especially at lower engine speeds?   show
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How does the back-suction type mixture control system operate?   show
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What occurs when a back-suction type mixture control is placed in IDLE CUTOFF?   show
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show by the inclusion in the carburetor of a spring in the unmetered fuel chamber  
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If the bellows of the automatic mixture control (AMC) in a pressure carburetor ruptures while the engine is operating at altitude, how will the mixture be affected?   show
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show the edge of the float  
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show Venturi  
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If the engine is not running and the carburetor leaks fuel, what is the likely cause?   show
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show The idle discharge nozzle  
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When air passes through the venturi of a carburetor, what three changes occur?   show
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The carburetor venturi does not do what?   show
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How is idle cutoff accomplished on a carburetor equipped with a back-suction mixture control?   show
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show To decrease fuel density and destroy surface tension  
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Where is the measurement usually made to determine the float level in a float-type carburetor?   show
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show mixture control  
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What device controls the volume of fuel/air mixture to the cylinders?   show
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show air velocity  
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At what engine speed does the main metering jet actually function as a metering jet in a float-type carburetor?   show
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What is the purpose of the carburetor accelerating system?   show
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show Venturi  
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show It will become enriched  
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How is the desire idle speed and mixture setting adjusted?   show
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show The idling air bleed  
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What would be considered as the most desirable conditions for trimming a turbine engine?   show
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show At rated power and at idle  
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show Changes in RPM or manifold pressure  
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show The optimum idle mixture has been obtained  
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show 10-50  
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show The engine will not idle  
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What are benefits of using water injection?   show
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What will an excessively lean fuel/air mixture cause?   show
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How much air to fuel is a mixture of 11:1?   show
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What system in a float-type carburetor increases the fuel/air ratio at high power settings?   show
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What does the dump portion of the valve do in turbine engines that use a pressurization and dump valve?   show
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show humidity  
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show Pressurization valve closed, dump valve open  
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What would a ruptured balance diaphragm cause?   show
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show Detonation  
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When should the needle valve and seat be replaced?   show
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show Mixture control position  
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show Cams, springs, and linkages  
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Created by: Ms.Fietzek
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