A114 - Instrument Orientation

Front 1

In the Northern Hemisphere, a magnetic compass will normally indicate a turn toward the north if

Back 1

an aircraft is accelerated while on an east or west heading.

Front 2

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

Back 2

pre-ignition.

Front 3

What is the advantage of a constant-speed propeller?

Back 3

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

Front 4

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

Back 4

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

Front 5

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

Back 5

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

Front 6

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

Back 6

The altimeter, airspeed indicator, and vertical speed indicator.

Front 7

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

Back 7

a decrease in RPM and then a gradual increase in RPM.

Front 8

Detonation may occur at high power settings when

Back 8

the fuel mixture ignites instantaneously instead of burning progressively and evenly.

Front 9

Detonation occurs in a reciprocating aircraft engine when

Back 9

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

Front 10

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

Back 10

lower the nose slightly to increase airspeed

Front 11

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

Back 11

the aircraft is decelerated while on a west heading.

Front 12

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?

Back 12

Check the results obtained with a leaner setting of the mixture.

Front 13

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

Back 13

correctly when on a north or south heading.

Front 14

Generally speaking, the use of carburetor heat tends to

Back 14

decrease engine performance

Front 15

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

Back 15

lower than the actual altitude above sea level.

Front 16

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

Back 16

a left turn is entered from a north heading.

Front 17

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

Back 17

Only in straight-and-level unaccelerated flight.

Front 18

If an airplane is equipped with a fixed-pitch propeller and a float-type carburetor, the first indication of carburetor ice would most likely be

Back 18

loss of RPM.

Front 19

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

Back 19

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

Front 20

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?

Back 20

The fuel/air mixture may become excessively lean.

Front 21

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

Back 21

higher than the actual altitude above sea level.

Front 22

What should be 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?

Back 22

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

Front 23

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

Back 23

a right turn is entered from a north heading.

Front 24

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

Back 24

detonation.

Front 25

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

Back 25

Temperature between 20 degrees F and 70 degrees F and high humidity.

Front 26

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

Back 26

Air temperature warmer than standard.

Front 27

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

Back 27

The next higher octane aviation gas.

Front 28

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

Back 28

high as 70 degrees F and the relative humidity is high.

Front 29

Under what condition will true altitude be lower than indicated altitude?

Back 29

In colder than standard temperature.

Front 30

Applying carburetor heat will

Back 30

enrich the fuel/air mixture.

Front 31

With regard to carburetor ice, float-type carburetor systems in comparison to fuel injection systems are generally considered to be

Back 31

more susceptible to icing.

Front 32

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

Back 32

Airspeed.

Front 33

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

Back 33

avoid high manifold pressure settings with low RPM.

Front 34

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

Back 34

The fuel/air mixture becomes richer.

Front 35

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

Back 35

be at the controls in the cockpit.

Front 36

Which instrument(s) will become inoperative if the static vents become clogged?

Back 36

Airspeed, altimeter, and vertical speed.

Front 37

How do variations in temperature affect the altimeter?

Back 37

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