SU2: Airplane Instruments, Engines, & Systems

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

difference in air pressure at venturi throat an air inlet

Applying carburetor heat will

enrich the fuel/air mixture

Deviation in a magnetic compass is caused by the

magnetic fields within the aircraft distorting the lines of magnetic force

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

maneuvering speed

If the ignition switch ground wire becomes disconnected, the magneto

may continue to fire

Abnormally high engine oil temperature indication may be caused by

oil level being too low

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

pre-ignition

In the northern hemisphere, a magnetic compass will normally indicate a turn toward the south when

the aircraft is decelerated while on a west heading

For internal cooling, reciprocating aircraft 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

Detonation occurs in a reciprocating aircraft engine when

the unburned charge in the cylinders explodes instead of burning normally

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

true altitude at field elevation

Fuel/air ratio is the ratio between the

weight of fuel and weight of air entering the cylinder

Altimeter 2 indicates

1,500 feet

Altimeter 1 indicates

10,500 feet

Altimeter 2 indicates

14,500 feet

What is the maximum structural cruise speed

165 knots

The maximum speed at which the airplane can be operated in smooth air is

208 knots

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

700-foot increase in indicated altitude

You are flying an aircraft equipped with an electronic flight display and air data computer fails. What instrument is affected

Airspeed indicator

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 results obtained with leaner setting of mixture

Under what condition will true altitude be lower than indicated altitude

In colder than standard air temperature

Which of the following is a true statement concerning electrical systems

Lights and radios use the electrical system for power

The proper adjustment to make on the attitude indicator during level flight is to align the

Miniature airplane to the horizon bar

What is an advantage of a constant-speed propeller

Permits the pilot to select the blade angle for the most efficient performance

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

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

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.

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

Throttle controls power output as registered on manifold pressure gauge and propeller control regulates constant blade angle

Under what condition is indicated altitude same as true altitude

When at sea level under certain conditions

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

When standard atmospheric conditions exist

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

In northern hemisphere, magnetic compass will normally indicate initially a turn toward east if

a left 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

In northern hemisphere, magnetic compass will normally indicate turn towards north if

an aircraft is accelerated while on east or west heading

Excessively high engine temperatures will

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

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

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

In Northern Hemisphere, if aircraft is accelerated or decelerated, 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 purpose of adjusting the fuel/air mixture at altitude is to

decrease the fuel flow in order to compensate for decreased air density