NEW
Font size
WorksheetsAircraft Systems 1-25
Total questions: 25
Worksheet time: 13mins
In what flight condition are torque effects more pronounced in a single-engine plane?
Low airspeed, high power, high angle of attack
Low airspeed, low power, low angle of attack
High airspeed, high power, high angle of attack
The left turning tendency of an airplane caused by P-factor is the result of the
Clockwise rotation of the engine and the propeller turning the airplane counterclockwise
Propeller blade descending on the right, producing more thrust than the ascending blade on the left
Gyroscopic forces applied to the rotation propeller blades acting 90° in advance of the point the force was applied
When does P-factor cause the airplane to yaw to the left?
When at low angles of attack
When at high angles of attack
Wen at high airspeeds
Excessively high engine temperatures will
Cause damage to heat-conducting hoses and warping of the cylinder cooling fins.
Cause loss of power, excessive oil consumption, and possible permanent internal engine damage
Not appreciably affect an aircraft engine
Excessively high engine temperatures, either in the air or on the ground, will
Increase fuel consumption and may increase power due to the increased heat
Result in damage to heat-conducting hoses and warping of cylinder cooling fans
Cause loss of power, excessive oil consumption, and possible permanent internal engine damage
If the engine oil temperature and the cylinder head temperature gauges have exceeded their normal operating range, the pilot may have been operating with
The mixture set too rich
Higher-than-normal oil pressure
Too much power and with the mixture set too lean
One purpose of the dual ignition system on an aircraft engine is to provide for
Improved engine performance
Uniform heat distribution
Balanced cylinder head pressure
An electrical system failure (battery and alternator) occurs during flight. In this situation, you would
Experience avionics equipment failure
Probably experience failure of the engine ignition system, fuel gauges, aircraft lighting system, and avionics equipment
Probably experience engine failure due to the loss of the engine-driven fuel pump and also experience failure of the radio equipment, lights, and all instruments that require alternating current
On aircraft equipped with fuel pumps, when is the auxiliary electric driven pump used?
All the time, to said the engine-driven fuel pump
Difference in air pressure at the venturi throat and the air inlet
Increase in air velocity in the throat of a venturi causing an increase in air pressure
The operating principle of float-type carburetors is based on the
Automatic metering of air at the Venturi as the aircraft gains altitude
Difference in the air pressure at the Venturi throat and the air inlet
Increase in air velocity in the throat of a Venturi causing an increase in air pressure
The basic purpose of adjusting the fuel/air mixture at altitude is to
Decrease the amount of fuel flow 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
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?
Check the results obtained with a learner setting of the mixture
Taxi back to the flight line for a maintenance check
Reduced manifold pressure to control detonation
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 excessive lean
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
The excessively rich mixture will create higher cylinder head temperatures and may cause detonation
Which condition is the most favorable to the development of carburetor icing?
Any temperature below freezing and a relative humidity of less than 50 percent
Temperature between 32 and 50°F and low humidity
Temperature between 20 and 70° and high humidity
The possibility of carburetor icing exists even when the ambient air temperature is as
High as 70°F and the relative humidity is high
High as 95°F and there is visible moisture
Low as 0°F and the relative humidity is high
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
Increase of RPM
Engine roughness
Loss of RPM
Applying carburetor heat will
Result in more air going through the carburetor
Enrich the fuel/air mixture
Not affect the fuel/air mixture becomes leaner
What change occurs in the fuel/air mixture when carburetor heat is applied?
A decrease in RPM results from the lean mixture
The fuel/air mixture becomes richer
The fuel/air mixture becomes leaner
Generally speaking, the use of carburetor heat tends to
Decrease engine performance
Increase engine performance
Have no effect on engine performance
The presence of carburetor ice in an aircraft equipped with a fixed-pitch propeller can be verified by applying carburetor heat and noting
An increase in RPM and then a gradual decrease in RPM
a decrease in RPM and then a constant RPM indication
A decrease in RPM and then a gradual increase in RPM
With regard to carburetor ice, float-type carburetor systems in comparison to fuel injection systems are generally considered to be
More susceptible to icing
Equally susceptible to icing
Less susceptible to icing
If the grade of fuel used in an aircraft engine is lower than specified for the engine, it will most likely cause
A mixture of fuel and air that is not uniform in all cylinders
Lower cylinder head temperatures
Detonation
Detonation may occur at high-power settings when
The fuel mixture ignites instantaneously instead of burning progressively and evenly
An excessively rich fuel mixture causes an explosive gain in power
The fuel mixture is ignited too early by hot carbon deposits in the cylinder
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
Lean the mixture
Lower the nose slightly to increase airspeed
Apply carburetor Heat
The uncontrolled firing of the fuel/air charge in advance of normal spark ignition is known as
Combustion
Pre-ignition
Detonation
