FAA Written Exam Unit 2

For interal cooling, air cooled engines are especially dependent on?

The circulation of lubricating oil.

Detonation may occur at high-power settings when?

The fuel mixture ignites instantaneously instead of burning progressively and evenly

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.

If a flight is made from an area of high pressure into an area of lower pressure without the altimeter setting being adjusted, the altimeter will indicate?

higher than actual altitude about sea level.

Excessive high engine temperatures, either in the air or on the ground will

Cause loss of power, excessive oil comsumption, and possible permanent interal engine damage

An electricial system failure (battery, and alternator) occurs during flight. in this situation, you would

experience avionics equipment failure.

To properly purge water from the fuel system of an aircraft squipped with fuel tank sumps and a fuel strainer quick drain, it is necessary to drain fuel from the

fuel strainer drain and the fuel tank sumps.

The possibility of carburetor icing exists evne when the ambient air temperature is as

high as 70*F and the relative humidity is high

Under what conditoin will ture altitude be lowe rthan indicated altitude?

in colder than standard air temperature.

on aircraft equipped with fuel pumps when is the auxillary electrip driven pump used?

in the event engine-driven fuel pump fails.

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 RMP

If a flight is made from an area of low pressure into an area of high pressure without the altimeter setting being adjusted, the altimeter will indicate?

lower than the actual altitude about sea level

If a pilot suspects taht the engine (with a fixed pitch propeller) is detonating during a climb out after takeoff the initial corrective action to take would be to?

lower the nose slightly to increase airspeed

If the ingition switch ground wire becomes disconnected, the maneto

may continue to fire

With regard to carburetor ice, float-type carburetor sysytems in comparisoin to fuel injected systems are generally considered to be?

more susceptible to icing.

the uncontrolled firing of the fuel/air charge in advance of normal spark ignition is known as ?

pre-ignition

What type of fuel can be substituted for an aircraft if the recommended octane is not available?

the next hight octane aviation gas.

Which would most likely cause the cylinder head temperature and engine oil temperature gauges to exceed their normal operating ranges?

using fuel that has lower-than-specified fuel rating

If it is necessary to set the altimeter from 29.15 to 29.85, what change occures?

700 ft increase in indicated altitude.----- altimeter setting and changes about 1,000 ft for ever change in 1"Hg in the altimeter setting

In the Northern Hemisphere, a magnetic compass will normally indicate initially a turn toward the east if?

A left turn is entered from a north heading.

In the Northern Hemisphere, a magnetic compass will normally indicate initially a turn toward the West if?

A right turn is entered from a North Heading

which condition would cause the altimeter to indicate a lower altitude than true altitude?

Air Temperature warmer than standard.

The pitot system provides impact pressure for which instrument?

Airspeed indicator.

Which instruments will become inoperative if the static vents become clogged?

Airspeed, altimeter, and vertical speed.

Which instrument will become inoperative if the pitot tube becomes clogged?

Airspeed.

If a pilot changes the altimeter setting from 30.11 to 29.96 what is the apporximate change in indication?

Altimeter will indicate 150ft lower.

In the Northern Hemispehere, a magnetic compass will normally indicate a turn toward the North if?

An aircraft is accelerated while on an East or West heading.

Under what condition is pressure altitude and density altitude the same value?

At standard temperature.

A precaution for the operation of an engine equipped with a constant-speed propeller is to?

Avoid high manifold pressure setting with low RPM.

what is density altitude?

The pressure altitude corrected for nonstandard temperature

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 obrtained with a leaner setting of the mixture.

In the Northern Hemisphere, if an aircraft is accelerated or decelerated, the magnetic compass will normally indicate?

Correctly when on a north or south heading

Generally speaking, the use of carburetor heat tends to?

Decrease engine performance

The basic puropose of adjusting the fuel/air mixture at altitude is to?

Decrease the fuel flow in order to compensate for decreased air density.

what is one procedure to aid in cooling an engine that is overheating?

Enrich the fuel mixture.

Applying caruretor heat will

Enrich the fuel/air mixture

One purpose of the dual ignition system on an aircraft engine is to provide for?

Improved engine performance.

Deviation in a magnetic compass is caused by the?

Magnetic fields whithin the aircraft distorting the lines of magnetic force.

What is an important airspeed limitation that is not color coded on airspeed indicators?

Maneuvering speed.

What does the red line of an airpseed indicator represent?

Never-exceed speed.

What is an advantage of a constant-speed propeller?

Permits the pilot to select the blade angle for the most eficient performance.

How do variations in temperature affect the altimeter?

Pressure levels are raised on warm days and the indicated altitude is lower than true altitude

Which condition is most favorable to the development of carburetor icing?

Temperature between 20*F and 70*F and high humidity

In the Northern Hemisphere, the magnetic compass will normally indicate a turn toward the South when?

The aircraft is decelerated while on a West heading.

If the pitot tube and outside ststic vents become clogged, which instruments would be affected?

The altimeter, airspeed indicator, and vertical speed indicatior.

What is pressure altitude?

The altitude indicated when the barometric pressure scale is set to 29.92

What should the indication on the magnetic compass as you roll into a standard rate turn to the right from a south heading in the Northern Hemisphere?

The compass will indicate a turn to the right, but at a faster rate than is actually occurring.

What change occurs in the fuel/air mixture when carburetor heat is applied?

The fuel/air mixture becomes ricer.

How is engine operation controlled on an engine equipped with a constant-speed propeller?

The throttle controls power output as registered on the manifold pressure gauge and the propeller control regulates engine RPM.

Detonation occurs in a reciprocating aircraft engine when?

The unburned charge in the cylinders explodes instead of burning normally.

What is true altitude?

The vertical distance of the aircraft above sea level.

what is absolute altitude?

The vertical distance of the aircraft above the surface.

If the engine oil temperature and cylinder head temperature guages have exceeded their normal operating range, the pilot may have been operating with?

Too much power and with the mixture set to lean.

Altimeter setting is the value to which the barometric pressure scale of the altimeter is set so the altimeter indicates?

True altitude at field elevation.

Under what condition is indicated altitude the same as true altitude?

When at sea level under standard conditions

Under what condition will pressure altitude be equal to true altitude?

When standard atomspheric conditions exist.

The presence of carburetor ice in an aircraft equipped witha fixed-pitch propeller can be verified by applying carburetor heat and noting?

a decrease in RPM and then a gradual increase in RPM

what should eb the first action after starting an aircraft engine?

adjust for proper RMP and check for desired indications on the engine gauges.

Should it become necessary to handprop an airplane engine, it is extremely important that a competent pilot

be at the controls in the cockpit

Excessively high engine temperatures will

cause loss of power, excessive oil consumption, and possible permanent internal engine damage.

if the grade of fuel used in an aircraft engine is lower than specified for the engine, it will most likely cause

detonation

The operating principle of float-type carburetors is based on the

difference in air pressure at the venturi throat and the air inlet

During flight, when are the indications of a magnetic compass acccurate?

Only in straight-and-level unaccelerated flight.

Filing the fuel tanks after the last flight of the day is considered a good operating procedure because this will?

prevent moisture condensation by eliminating airspace in the tanks.

What action can a pilot take to aid in cooling an engine that is overheating during a climb.

reduce rate of climb and increase airspeed.