NAVEDTRA 14014A, Airman, Ch. 8

Question 1

How many primary sources of electrical energy do aircraft have?

Answer 1

Two

Question 2

What rating maintains aircraft electrical systems?

Answer 2

Aviation Electrician’s Mate (AE)

Question 3

What is the emergency power source for the aircraft?

Answer 3

Battery

Question 4

The electrolyte consists of potassium hydroxide and what else?

Answer 4

Water

Question 5

What is the fundamental unit of the nickel-cadmium aircraft storage battery?

Answer 5

Cell

Question 6

The sintered-plate nickel-cadmium cells used in the battery consist of what two basic types?

Answer 6

Vented and sealed

Question 7

What is the principal hazard in working with lead-acid batteries when you are refilling or handling them?

Answer 7

Acid burns

Question 8

Highly explosive, what collects while batteries are charging and can cause an explosion during battery charging?

Answer 8

Hydrogen gas

Question 9

If the electrolyte from a nickel-cadmium (NICAD) battery touches your skin or eyes, flush the affected area thoroughly with large quantities of fresh water. Neutralize with vinegar or a weak solution (what percent) of boric acid?

Answer 9

3%

Question 10

What converts mechanical energy into electrical energy?

Answer 10

Generator

Question 11

What converts ac power to dc power?

Answer 11

Rectifier

Question 12

What generators provide emergency electrical power in the event of main electrical power failure?

Answer 12

Emergency generators

Question 13

What provides compressed air for air-conditioning and pneumatic engine starting?

Answer 13

Gas turbine

Question 14

What rating maintains the pitot-static system and most aircraft instruments?

Answer 14

AE

Question 15

The pitot-static system in an aircraft includes some of the instruments that operate on the principle of what?

Answer 15

Barometer

Question 16

What displays the altitude of the aircraft?

Answer 16

Altimeter

Question 17

What term means stationary or not changing?

Answer 17

Static

Question 18

What number of any moving body is its speed compared to the speed of sound in the surrounding medium (local speed)?

Answer 18

Mach

Question 19

Electrically activated instruments are usually in the form of what with calibrated dials?

Answer 19

Small voltmeters

Question 20

The pressures of hydraulic systems vary for different models of aircraft. In most pressure systems, the gauges register from 0 to what psi?

Answer 20

3,000

Question 21

What is an instrument for showing the speed of the power section of a gas turbine engine?

Answer 21

Tachometer

Question 22

What is used to show engine performance data, fuel flow, engine speed, exhaust gas temperatures, and accelerometer readings?

Answer 22

Vertical scale indicator

Question 23

What show the pilot the relative position of the aircraft compared to the earth’s horizon?

Answer 23

Attitude indicators

Question 24

What system provides an accurate indication of aircraft headings through 360° of azimuth?

Answer 24

Gyro

Question 25

What is the most practical system to use for sending information to many points, as in broadcasting to large numbers of ships or aircraft?

Answer 25

Radio communication

Question 26

The transmission of intelligible coded radio-frequency waves as Morse code is known as what?

Answer 26

Radiotelegraphy

Question 27

The transmission of sound intelligence (voice, music, or tones) by continuous radio-frequency waves is known as what?

Answer 27

Radiotelephony

Question 28

The transmission of still images (weather maps, photographs, sketches, and so forth) over a radio-frequency channel is known as what?

Answer 28

Radiofacsimile

Question 29

The transmission of typewritten messages over a radio-frequency channel is known as what?

Answer 29

Radioteletype

Question 30

The transmission of a rapid succession of images (still or moving) over a radio-frequency channel is known as what?

Answer 30

Radiotelevesion

Question 31

Airborne long-range communications sets normally operate in a band of frequencies from about 3 MHz to what?

Answer 31

30 MHz

Question 32

Most long-range communications sets are designed for both voice and what other operation?

Answer 32

CW (Morse code)

Question 33

Short-range airborne communications sets operate in the frequency range from about 30 MHz to 3 GHz. The lower portion of this band is the very-high-frequency (VHF) band; what is the higher portion of the band?

Answer 33

Ultra-High-Frequency (UHF)

Question 34

Radio waves transmitted at VHF/UHF frequencies are limited to what type of transmission?

Answer 34

Line-of-sight

Question 35

What is a radio navigational set that provides slant range and relative bearing to a transmitting ground (surface) station?

Answer 35

TACAN

Question 36

What is a space-based radio position and navigation system designed to provide highly accurate three- dimensional position, velocity, and time data to suitably equipped aircraft anywhere on or near the earth?

Answer 36

GPS

Question 37

What type of navigation is based on a radar wave transmission beamed toward the earth behind the aircraft?

Answer 37

Doppler navigation

Question 38

What is an automatic aid to navigation that is independent of outside references?

Answer 38

Inertial Navigation System (INS)

Question 39

What is a radio device used to detect objects at distances much greater than is visually possible?

Answer 39

Radar

Question 40

What principle does radar work on?

Answer 40

Echo

Question 41

Sound waves travel about how many feet per second?

Answer 41

1,100

Question 42

Radio waves travel at the speed of light (about how many miles per second)?

Answer 42

186,000

Question 43

Radio waves travel about how many yards in a millionth of a second?

Answer 43

330

Question 44

What rating maintains AEW equipment?

Answer 44

AT

Question 45

What gathers intelligence from the enemy's electronic devices and make the devices ineffective?

Answer 45

ECM

Question 46

Electronic countermeasures consist of what two general types of actions?

Answer 46

Passive and Active

Question 47

What type of ECM operations are those that cannot be directly detected by the enemy?

Answer 47

Passive

Question 48

ECM can detect a radar pulse transmission at how many times the distance the radar returns can detect a target?

Answer 48

11⁄2

Question 49

What is an expendable electronic listening device dropped into water from carrier-based and land-based patrol aircraft?

Answer 49

Sonobuoy