Unit 8. Configuration and Airfield Opertions Support

Question 1

49. Importance of proper siting

1. What effect can roughness or sloping terrain around an instrument landing system have on the radiation pattern?

Answer 1

It can prevent the formation of the desired radiation pattern and produce an undesirable course.

Question 2

What is the maximum transverse tilt allowed in area “B” in front of the localizer course array?

Answer 2

Transverse tilt (perpendicular to on-course line) must not exceed 1:100.

Question 3

What are the restrictions on objects in a 30-degree sector in front of the localizer course array?

Answer 3

In a 30-degree sector in front of the course array, the height of objects must be below a slope line, running from the array at a ratio of 1:100.

Question 4

What are the restrictions on the area within 500 feet in front of the glideslope antenna?

Answer 4

Must be clear of vehicular traffic and other reflecting objects

Question 5

How do you get power and control lines to an omni-range shelter?

Answer 5

They run underground radially from the terminal pole for at least 2,000 feet from the shelter.

Question 6

Why are objects beyond 1,000 feet not critical in the siting criteria for a TACAN?

Answer 6

They cause shadows, but do not cause substantial errors.

Question 7

Why must radio antennas be located high above any obstructions?

Answer 7

They are omnidirectional and line-of-sight.

Question 8

8–2. Airfield Systems Support

50. Aerodrome and safety of flight relationships
51. What are the seven career fields under cyber systems?

Answer 8

(1) CLIENT SYSTEMS
(2) Cyber transport systems (3D1X2).
(3) RF transmission systems (3D1X3).
(4) Spectrum ops (3D1X4).
(5) Radar systems (3D1X5).
(6) Airfield systems (3D1X6).
(7) Communications cable and antenna systems (3D1X7).

Question 9

2. What agency periodically inspects the safety of the navigational equipment?

Answer 9

FAA.

Question 10

3. What is the purpose of a light gun?

Answer 10

Signaling aircraft, vehicles and personnel on or in the vicinity the airfield to ensure they are able to safely perform their duties in the event of a radio failure.

Question 11

4. During what type of training might you be exposed to light guns?

Answer 11

Flightline drivers’ training.

Question 12

5. Who are the primary users of the light guns?

Answer 12

Air traffic controllers.

Question 13

51. Batteries

1. What are the two categories of batteries?

Answer 13

Primary and secondary cells.

Question 14

2. What is another name for primary cell batteries?

Answer 14

It is also called a dry cell because of its moist paste electrolyte.

Question 15

3. What primary battery cell has a nominal voltage of 1.5 volts, a very low internal resistance, and a high service capacity?

Answer 15

Alkaline.

Question 16

4. What secondary cell battery is known for its light weight, high power capacity, no memory effect and long shelf life?

Answer 16

Lithium battery.

Question 17

52. Uninterruptible power supply

1. What is the primary reason for an UPS?

Answer 17

To provide an alternate source of clean AC power in an emergency.

Question 18

2. What are the five basic categories of power line faults?

Answer 18

(1) Sags.
(2) Blackouts.
(3) Spikes.
(4) Surges.
(5) Noise.

Question 19

3. What power line fault is analogous to a tidal wave and can damage or completely destroy components?

Answer 19

A spike.

Question 20

4. What are the three types of UPS defined by the IEC?

Answer 20

(1) Passive standby.
(2) Line interactive.
(3) Double conversion.

Question 21

5. What UPS topology has been traditionally referred to as “offline”?

Answer 21

Passive standby.

Question 22

6. What UPS topology has been traditionally referred to as “online”?

Answer 22

Double conversion.

Question 23

53. Fixed generators and transfer switches

1. How many phases are preferred in a generator set for motors and industrial settings?

Answer 23

Three-phase power.

Question 24

2. What are the power specification outputs for the two types of generator sets?

Answer 24

Three-phase generators are set up to produce 120/208 or 277/480 volts. Single-phase sets are 120 or 120/240.

Question 25

3. What is the purpose of an ATS?

Answer 25

It allows for smooth and immediate transfer of electrical current between multiple sources and the load.