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ATI2 MAR2017 > NAVEDTRA 14014A, Airman, Ch. 8 > Flashcards

NAVEDTRA 14014A, Airman, Ch. 8 Flashcards

1
Q

How many primary sources of electrical energy do aircraft have?

A

Two

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2
Q

What rating maintains aircraft electrical systems?

A

Aviation Electrician’s Mate (AE)

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3
Q

What is the emergency power source for the aircraft?

A

Battery

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4
Q

The electrolyte consists of potassium hydroxide and what else?

A

Water

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5
Q

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

A

Cell

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6
Q

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

A

Vented and sealed

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7
Q

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

A

Acid burns

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8
Q

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

A

Hydrogen gas

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9
Q

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?

A

3%

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10
Q

What converts mechanical energy into electrical energy?

A

Generator

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11
Q

What converts ac power to dc power?

A

Rectifier

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12
Q

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

A

Emergency generators

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13
Q

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

A

Gas turbine

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14
Q

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

A

AE

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15
Q

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

A

Barometer

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16
Q

What displays the altitude of the aircraft?

A

Altimeter

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17
Q

What term means stationary or not changing?

A

Static

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18
Q

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

A

Mach

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19
Q

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

A

Small voltmeters

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20
Q

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

A

3,000

21
Q

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

A

Tachometer

22
Q

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

A

Vertical scale indicator

23
Q

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

A

Attitude indicators

24
Q

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

A

Gyro

25
Q

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

A

Radio communication

26
Q

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

A

Radiotelegraphy

27
Q

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

A

Radiotelephony

28
Q

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

A

Radiofacsimile

29
Q

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

A

Radioteletype

30
Q

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

A

Radiotelevesion

31
Q

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

A

30 MHz

32
Q

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

A

CW (Morse code)

33
Q

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?

A

Ultra-High-Frequency (UHF)

34
Q

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

A

Line-of-sight

35
Q

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

A

TACAN

36
Q

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?

A

GPS

37
Q

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

A

Doppler navigation

38
Q

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

A

Inertial Navigation System (INS)

39
Q

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

A

Radar

40
Q

What principle does radar work on?

A

Echo

41
Q

Sound waves travel about how many feet per second?

A

1,100

42
Q

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

A

186,000

43
Q

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

A

330

44
Q

What rating maintains AEW equipment?

A

AT

45
Q

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

A

ECM

46
Q

Electronic countermeasures consist of what two general types of actions?

A

Passive and Active

47
Q

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

A

Passive

48
Q

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

A

11⁄2

49
Q

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

A

Sonobuoy

ATI2 MAR2017 (42 decks)

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