Airplane Instruments, Engines, and Systems

Question 1

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

Answer 1

an aircraft is accelerated while on an east or west heading

Question 2

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

Answer 2

Only in straight and level unaccelerated flight

Question 3

Deviation in a magnetic compass is caused by

Answer 3

magnetic fields within the aircraft distorting the lines of magnetic force

Question 4

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

Answer 4

correctly when on a north or south heading

Question 5

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

Answer 5

a right turn is entered from a north heading

Question 6

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

Answer 6

the aircraft is decelerated while on a west heading

Question 7

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

Answer 7

a left turn is entered from a north heading

Question 8

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?

Answer 8

the compass will initially indicate a turn to the right, but at a faster rate than is acutally occurring

Question 9

The pitot system provides impact pressure for which instrument?

Answer 9

airspeed indicator

Question 10

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

Answer 10

airspeed

Question 11

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

Answer 11

The altimeter, airspeed indicator, and the vertical speed indicator

Question 12

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

Answer 12

airspeed. altimeter, and vertical speed

Question 13

What does the red line on an airspeed indicator represent?

Answer 13

never-exceed speed

Question 14

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

Answer 14

maneuvering speed

Question 15

What is absolute altitude?

Answer 15

The vertical distance of the aircraft above the surface

Question 16

What is true altitude?

Answer 16

The vertical distance of the aircraft above the sea level

Question 17

What is density altitude?

Answer 17

The pressure altitude corrected for nonstandard temperature

Question 18

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

Answer 18

At standard temperature

Question 19

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

Answer 19

When at sea level under standard conditions

Question 20

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

Answer 20

When standard atmospheric conditions exist

Question 21

What is pressure altitude?

Answer 21

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

Question 22

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

Answer 22

true altitude at field elevation

Question 23

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

Answer 23

700-foot increase in indicated altitude

Question 24

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

Answer 24

Altimeter will indicate 150 feet lower

Question 25

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

Answer 25

lower than the actual altitude above sea level

Question 26

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…

Answer 26

higher than the actual altitude above sea level

Question 27

Which condition would caue the altimeter t indicate a lower altitude than true altitude?

Answer 27

Air temperature warmer than standard

Question 28

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

Answer 28

In colder than standard air temperature

Question 29

How do variations in temperature affect the altimeter?

Answer 29

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

Question 30

What is a benefit of flying with a glass cockpit?

Answer 30

Situational awareness is increased

Question 31

What steps must be taken when flying with glass cockpits to ensure safe flight?

Answer 31

Regularly scan both inside and outside, use all appropriate checklists, and cross check with other forms of information

Question 32

An abnormally high engine oil temperature indication may be caused by…

Answer 32

the oil level being too low

Question 33

Excessively high engine temperatures will…

Answer 33

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

Question 34

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

Answer 34

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

Question 35

For internal cooling, air cooled engines are especially dependent on

Answer 35

the circulation of lubricating oil

Question 36

If the engine oil temperature and cylinder head temperature gauges ahve eceeded their normal operating range, the pilot may have been operating with

Answer 36

too much power and with the mixture set too lean

Question 37

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

Answer 37

reduce rate of climb and increase airspeed

Question 38

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

Answer 38

enrich the fuel mixture

Question 39

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

Answer 39

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

Question 40

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

Answer 40

avoid high manifold pressure settings with low RPM

Question 41

What is an advantage of a constant-speed propeller?

Answer 41

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

Question 42

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

Answer 42

improved engine performance

Question 43

If the ignition switch ground wire becomes disconnected, the magneto

Answer 43

may continue to fire

Question 44

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

Answer 44

more susceptible to icing

Question 45

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

Answer 45

Temperatures between 20F and 70F and high humidity

Question 46

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

Answer 46

high as 70F and the relative humidity is high

Question 47

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…

Answer 47

loss of RPM

Question 48

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

Answer 48

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

Question 49

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

Answer 49

a decrease in RPM and then a gradual increase in RPM

Question 50

Generally speaking, the use of carburetor ehat tends to

Answer 50

decrease engine performance

Question 51

Applying carburetor heat will

Answer 51

enrich the fuel/air mixture

Question 52

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

Answer 52

The fuel/air mixture becomes leaner

Question 53

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?

Answer 53

Check the results obtained with a leaner setting of the mixture

Question 54

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

Answer 54

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

Question 55

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?

Answer 55

The fuel/air mixture may become excessively lean

Question 56

Detonation occurs in a reciprocating aircraft when

Answer 56

the unburned charge in the cylinders explodes instead of burning normally

Question 57

Detonation may occur at high-power settings when

Answer 57

the fuel mixture ignites instantaneously instead of burning progressively and evenly

Question 58

If a pilot suspects that the engine (with a fixed pitch propeller) is detonating during climb-out after takeoff, the intitial corrective action to take would be to

Answer 58

lower the nose slightly to increase airspeed

Question 59

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

Answer 59

detonation

Question 60

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

Answer 60

pre-ignition

Question 61

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

Answer 61

the next higher octane aviation gas

Question 62

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

Answer 62

prevent moisture condensation by eliminating airspace in the tanks

Question 63

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

Answer 63

fuel strainer drain and the fuel tank sumps

Question 64

On aircraft equipped with fuel pumps, when is the auxiliary electric driven pump used?

Answer 64

in the event engine-driven fuel pump fails

Question 65

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

Answer 65

using fuel that has a lower than specified fuel rating

Question 66

What should be the first action after starting an aircraft engine?

Answer 66

adjust for proper RPM and check for desired indications on the engine gauges

Question 67

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

Answer 67

be at the controls in the cockpit

Question 68

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

Answer 68

experience avionics equipment failure

Question 69

A positive indication on an ammeter

Answer 69

shows the rate of charge on the battery

Question 70

To keep a battery charged, the alternator voltage output should be

Answer 70

higher than the battery voltage

Question 71

Which of the following is a true statement concerning electrical systems?

Answer 71

lights and radios use the electrical system for power