For internal cooling, reciprocating aircraft engines are especially dependent on...
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the circulation of lubricating oil.
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Detonation may occur at high-power settings when...
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the fuel mixture ignites instantaneously instead of burning progressively and evenly.
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The presence of carburetor ice in an aircraft equipped with a fixed-pitch propeller can be verified by applying carburetor heat and noting...
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a decrease in RPM and then a gradual increase in RPM.
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How is engine operation controlled on an engine equipped with a constant-speed propeller?
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The throttle controls power output as registered on the manifold pressure gauge and the propeller control regulates engine RPM.
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Applying carburetor heat will...
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enrich the fuel/air mixture.
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Carburetor icing can occur with an OAT as high as...
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20 degrees celsius and high relative humidity.
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While cruising at 9,500 feet MSL, the fuel/air mixture is properly adjusted. What will occur if a descent to 4,500 feet MSL is made without readjusting the mixture?
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The fuel/air mixture may become excessively lean.
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Detonation occurs in a reciprocating aircraft engine when...
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the unburned charge in the cylinders explodes instead of burning normally.
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Which condition is most favorable to the development of carburetor icing?
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Temperature between 20 and 70 degrees fahrenheit and high humidity.
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What type fuel can be substituted for an aircraft if the recommended octane is not available?
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The next higher octane aviation gas.
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During the preflight inspection who is responsible for determining the aircraft is safe for flight?
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The pilot in command.
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The uncontrolled firing of the fuel/air charge in advance of normal spark ignition is known as...
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pre-ignition.
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The possibility of carburetor icing exists even when the ambient air temperature is as...
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high as 70 degrees fahrenheit and the relative humidity is high.
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What is one procedure to aid in cooling an engine that is overheating?
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Enrichen the fuel mixture.
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If a pilot suspects that the engine (with a fixed-pitch propeller) is detonating during climb-out after takeoff, the initial corrective action to take would be to...
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lower the nose slightly to increase airspeed.
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During the run-up at a high-elevation airport, a pilot notes a slight engine roughness that is not affected by the magneto check but grows worse during the carburetor heat check. Under these circumstances, what would be the most logical initial action?
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Check the results obtained with a leaner setting of the mixture.
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Who is primarily responsible for maintaining an aircraft in airworthy condition?
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Owner or operator.
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Should it become necessary to handprop an airplane engine, it is extremely important that a competent pilot...
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be at the controls in the cockpit.
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The basic purpose of adjusting the fuel/air mixture at altitude is to...
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decrease the fuel flow in order to compensate for decreased air density.
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What action can a pilot take to aid in cooling an engine that is overheating during a climb?
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Reduce rate of climb and increase airspeed.
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An electrical system failure (battery and alternator) occurs during flight. In this situation, you would...
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experience avionics equipment failure.
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When does P-factor cause the airplane to yaw to the left?
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When at high angles of attack.
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Which would most likely cause the cylinder head temperature and engine oil temperature gauges to exceed their normal operating ranges?
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Using fuel that has a lower-than-specified fuel rating
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What is one purpose for using reciprocating engines?
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The are relatively simple and inexpensive to operate.
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One purpose of the dual ignition system on an aircraft engine is to provide for...
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improved engine performance.
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An abnormally high engine oil temperature indication may be caused by...
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the oil level being too low.
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On aircraft equipped with fuel pumps, when is the auxiliary electric driven pump used?
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In the event engine-driven fuel pump fails.
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If the engine oil temperature and cylinder head temperature gauges have exceeded their normal operating range, the pilot may have been operating with...
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too much power and with the mixture set too lean.
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The most important rule to remember in the event of a power failure after becoming airborne is to...
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immediately establish the proper gliding attitude and airspeed.
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In what flight condition is torque effect the greatest in a single-engine airplane?
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Low airspeed, high power, high angle of attack.
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What change occurs in the fuel/air mixture when carburetor heat is applied?
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The fuel/air mixture becomes richer.
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To properly purge water from the fuel system of an aircraft equipped with fuel tank sumps and a fuel strainer quick drain, it is necessary to drain fuel from the...
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fuel strainer drain and the fuel tank sumps.
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If the grade of fuel used in an aircraft engine is lower than specified for the engine, it will most likely cause...
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detonation.
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How should an aircraft preflight inspection be accomplished for the first flight of the day?
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Thorough and systematic means recommended by the manufacturer.
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What is an advantage of a constant-speed propeller?
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Permits the pilot to select the blade angle for the most efficient performance.
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The operating principle of float-type carburetors is based on the...
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difference in air pressure at the venturi throat and the air inlet.
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The left turning tendency of an airplane caused by P-factor is the result of the...
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propeller blade descending on the right, producing more thrust than the ascending blade on the left.
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Filling the fuel tanks after the last flight of the day is considered a good operating procedure because this will...
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prevent moisture condensation by eliminating airspace in the tanks.
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With regard to carburetor ice, float-type carburetor systems in comparison to fuel injection systems are generally considered to be...
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more susceptible to icing.
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Generally speaking, the use of carburetor heat tends to...
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decrease engine performance.
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Excessively high engine temperatures, either in the air or on the ground, will...
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cause loss of power, excessive oil consumption, and possible permanent internal engine damage.
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What should be the first action after starting an aircraft engine?
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Adjust for proper RPM and check for desired indications on the engine gauges.
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If the ground wire between the magneto and the ignition switch becomes disconnected, the most noticeable result will be that the engine...
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cannot be shut down by turning the switch to the OFF position.
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Excessively high engine temperatures will...
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cause loss of power, excessive oil consumption, and possible permanent internal engine damage.
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If an aircraft is equipped with a fixed-pitch propeller and a float-type carburetor, the first indication of carburetor ice would most likely be...
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loss of RPM.
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A precaution for the operation of an engine equipped with a constant-speed propeller is to...
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avoid high manifold pressure settings with low RPM.
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