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VPPL Test Question Bank 1 - Systems

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1: What action can a pilot take to aid in cooling an engine that is overheating during a climb?: Reduce climb speed and increase RPM.
Increase climb speed and increase RPM.
Reduce rate of climb and increase airspeed.
2: What is one procedure to aid in cooling an engine that is overheating?: Enrichen the fuel mixture.
Increase the RPM.
Reduce the airspeed.
3: How is engine operation controlled on an engine equipped with a constant-speed propeller?: The throttle controls engine RPM as registered on the tachometer and the mixture control regulates the power output.
B. The throttle controls power output as registered on the manifold pressure gauge and the propeller control regulates a constant blade angle.
The throttle controls power output as registered on the manifold pressure gauge and the propeller control regulates engine RPM.
4: What is an advantage of a constant-speed propeller?: Permits the pilot to select the blade angle for the most efficient performance.
Permits the pilot to select and maintain a desired cruising speed.
Provides a smoother operation with stable RPM and eliminates vibrations.
5: A precaution for the operation of an engine equipped with a constant-speed propeller is to:: avoid high manifold pressure settings with low RPM.
always use a rich mixture with high RPM settings.
avoid high RPM settings with high manifold pressure.
6: What should be the first action after starting an aircraft engine?: Place the magneto or ignition switch momentarily in the OFF position to check for proper grounding.
Test each brake and the parking brake.
Adjust for proper RPM and check for desired indications on the engine gauges.
7: Excessively high engine temperatures will:: cause loss of power, excessive oil consumption, and possible permanent internal engine damage.
not appreciably affect an aircraft engine.
cause damage to heat-conducting hoses and warping of the cylinder cooling fins.
8: If the engine oil temperature and cylinder head temperature gauges have exceeded their normal operating range, the pilot may have been operating with:: higher-than-normal oil pressure.
the mixture set too rich.
too much power and with the mixture set too lean.
9: One purpose of the dual ignition system on an aircraft engine is to provide for:: improved engine performance.
balanced cylinder head pressure.
uniform heat distribution.
10: On aircraft equipped with fuel pumps, when is the auxiliary electric driven pump used?: In the event engine-driven fuel pump fails.
All the time to aid the engine-driven fuel pump.
Constantly except in starting the engine.
11: The operating principle of float-type carburetors is based on the:: automatic metering of air at the venturi as the aircraft gains altitude.
increase in air velocity in the throat of a venturi causing an increase in air pressure.
difference in air pressure at the venturi throat and the air inlet.
12: The basic purpose of adjusting the fuel/air mixture at altitude is to:: decrease the amount of fuel in the mixture in order to compensate for increased air density.
decrease the fuel flow in order to compensate for decreased air density.
increase the amount of fuel in the mixture to compensate for the decrease in pressure and density of the air.
13: 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?: Reduce manifold pressure to control detonation.
Taxi back to the flight line for a maintenance check.
Check the results obtained with a leaner setting of the mixture.
14: 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?: The fuel/air mixture may become excessively lean.
The excessively rich mixture will create higher cylinder head temperatures and may cause detonation.
There will be more fuel in the cylinders than is needed for normal combustion, and the excess fuel will absorb heat and cool the engine.
15: Which condition is most favorable to the development of carburetor icing?: Temperature between 20 and 70 °F and high humidity.
Any temperature below freezing and a relative humidity of less than 50 percent.
Temperature between 32 and 50 °F and low humidity.
16: 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:: loss of RPM.
engine roughness.
a drop in oil temperature and cylinder head temperature.
17: Applying carburetor heat will:: result in more air going through the carburetor.
enrich the fuel/air mixture.
not affect the fuel/air mixture.
18: Generally speaking, the use of carburetor heat tends to:: have no effect on engine performance.
decrease engine performance.
increase engine performance.
19: The presence of carburetor ice in an aircraft equipped with a fixed-pitch propeller can be verified by applying carburetor heat and noting:: a decrease in RPM and then a gradual increase in RPM.
an increase in RPM and then a gradual decrease in RPM.
a decrease in RPM and then a constant RPM indication.
20: With regard to carburetor ice, float-type carburetor systems in comparison to fuel injection systems are generally considered to be:: susceptible to icing only when visible moisture is present.
equally susceptible to icing.
more susceptible to icing.
21: An abnormally high engine oil temperature indication may be caused by:: operating with an excessively rich mixture.
operating with a too high viscosity oil.
the oil level being too low.