Ifcs 5 Level Cdc's Volume 4

Front 1

Near the equator, the lines of magnetic force are

Back 1

parallel to the Earth's surface

Front 2

Which magnetic compass error occurs due to magnetism within the aircraft?

Back 2

Deviation

Front 3

The magnitude of the Coriolis error signal depends on the aircraft speed, aircraft heading,

Back 3

rotation of the Earth, and geographic latitude.

Front 4

Neutralizing or weakening the permanent magnetic field that exists around an aircraft is called

Back 4

degaussing

Front 5

Any misalignment between the magnetic azimuth detector and the longitudinal axis of the aircraft creates

Back 5

an index error

Front 6

Which error is due primarily to an electrical imbalance in the windings of the magnetic azimuth detector?

Back 6

transmission error

Front 7

With an input frequency of 400 Hz , what is the frequency of the magnetic azimuth detector output?

Back 7

800 Hz

Front 8

What is used to develop the single-cycle error compensation signal in the attitude heading reference system?

Back 8

Variable resistors

Front 9

What types of gyros are used in the attitude heading reference system?

Back 9

One vertical and one directional gyro

Front 10

The source of the erection signal for the VG pitch gimbal of the attitude heading reference system is

Back 10

a fluid type sensor

Front 11

The attitude heading reference system DG pitch gimbal is aligned with and continuously follows the

Back 11

VG pitch gimbal

Front 12

The attitude heading reference system requires input power consisting of 115-VAC, 400 Hz, 3-phase aircraft power, and

Back 12

26-VAC, 400 Hz, single-phase power for excitation

Front 13

The AHRS cuts off slaving of the AHRS to magnetic heading when a fore-aft acceleration of

Back 13

0.055-g or a turn rate of 8º per minute

Front 14

The three attitude heading reference system heading modes of operation are slave,

Back 14

DG, and compass

Front 15

The MC-2000 electronics group consists of a control console, magnetic field monitor,

Back 15

turntable, and alignment tool kit.

Front 16

The serial number on the MC-2000 electronics group control console must match the serial number on the

Back 16

magnetic field monitor

Front 17

The telescope on the magnetic field monitor is

Back 17

22-power and rotates 360 degrees

Front 18

What is used only during the field certification and calibration check?

Back 18

Magnetic azimuth reference detector

Front 19

The navigation function is accomplished primarily through the sensing and measurement of

Back 19

acceleration

Front 20

The inertial navigation system operates as a self-contained system, but can be updated by

Back 20

TACAN, SKE, or manually

Front 21

Which INS unit serves as the communication link between the pilot and the INU digital computer?

Back 21

Control display unit

Front 22

Which INS control display unit light illuminates approximately two minutes before reaching a waypoint during flight?

Back 22

ALERT

Front 23

Which INS control display unit right-hand data display digits display an action code when there is a system failure?

Back 23

2 and 3

Front 24

Which INS submode enables aided inertial operation using TACAN data?

Back 24

4

Front 25

Which light indicates an operator error or out-of-tolerance condition in the INS computer?

Back 25

WARN

Front 26

What is the maximum time a fully charged battery unit can sustain INS operation?

Back 26

30 Minutes

Front 27

The ATT switch position on the INS mode selector unit is used to select

Back 27

only attitude signals

Front 28

The INS mode selector unit BAT light illuminates if the battery unit

Back 28

is not charged enough to sustain INS operation

Front 29

The most accurate inertial navigation system alignment is

Back 29

pure inertial

Front 30

In coarse level (state 8), the inertial navigation system platform gimbals are aligned to

Back 30

local vertical

Front 31

What do global positioning system receivers have programmed into their computers telling the receiver continually where each satellite is located?

Back 31

Almanac

Front 32

The process of using fixed points and their bearings to isloate a position in space is called

Back 32

triangulation

Front 33

The global positioning system is a worldwide radio-navigation system with ground stations and a receiver, and is formed from a constellation of how many satellites?

Back 33

24

Front 34

How many global position system satellites are needed to establish out lateral and longitudinal coordinates?

Back 34

3

Front 35

How many global positioning system satellites are needed to determine aircraft altitude?

Back 35

4

Front 36

The global positioning system satellites and receivers are synchronized to the nanosecond by

Back 36

atomic clocks

Front 37

The FD/RGA dual integrated FD system is made up of dual FD's, dual angle-of-attack/RGA subsystems, and

Back 37

a comparator warning monitor

Front 38

The dual flight director systems provide the pilot with displays of aircraft attitude, heading, and

Back 38

course

Front 39

What is shared by both RGA subsystems of the flight director system?

Back 39

A probe heater relay

Front 40

The pitch command control of the flight director system selects a climb or descent angle from

Back 40

15°up to 10° down

Front 41

What flight director system's attitude director indicator warning flag indicates faulty command bar information?

Back 41

CMPTR

Front 42

What is displayed on the heading marker of the flight director system's horizontal situation indicator?

Back 42

Manually selected heading

Front 43

With the flight director system's HSI remote heading slew switch in the DUAL position, which HSI heading marker(s) move when the pilot's heading slew control is pressed?

Back 43

Pilot's and copilot's

Front 44

What flight director system component develops the lateral and vertical signals displayed on the attitude director indicator by the command bars?

Back 44

steering computer

Front 45

In the AOA/RGA system, how many degrees on initial climbout are displayed on the attitude director indicator during takeoff with the flaps set at 30°?

Back 45

8°

Front 46

What does the RGA computer provide to the control unit to indicate the validity of the vertical steering signal?

Back 46

An interlock signal

Front 47

What AOA/RGA system component averages the AOA signals?

Back 47

RGA interface logic unit

Front 48

Which RGA interface logic unit test switch must be activated to allow go-around mode testing on the ground?

Back 48

WOW TEST

Front 49

Which comparator warning monitor subsystem indicator, lights when a differential error of 3° pitch exists for more than two seconds between the two RGA computers?

Back 49

RGA

Front 50

The four channels of the comparator warning monitor compare the dial outputs of the compass, glidescope, localizer, and

Back 50

low-range altimeter systems

Front 51

In what FD/RGA operating mode are the attitude director indicator's command bats driven out of view?

Back 51

GYRO

Front 52

In what FD/RGA operating mode does the roll steering computer use the heading error and bank attitude signals to computer lateral steering commands?

Back 52

HDG

Front 53

In the FD/RGA system, at what altitude is glidescope extension mode initiated?

Back 53

200

Front 54

In the FD/RGA system, what mode overrides the navigation lateral and glidescope beam sensors?

Back 54

APPR MAN

Front 55

Which flight control surface position indicator displays percentage of surface extension?

Back 55

Flap

Front 56

What type of operating power is required by a selsyn position indicating system?

Back 56

28 VDC

Front 57

How many degrees apart are the wipers of the selsyn transmitter positioned?

Back 57

180

Front 58

How accurately the selsyn position indicator rotor follows the transmitter depends upon the

Back 58

spacing of the coils and taps

Front 59

The vertical scale tachometer indicating system monitors the speed of which two engine compressors?

Back 59

N¹ (low speed) and N² (high-speed)

Front 60

The tachometer generator most commonly used with vertical scale revolutions per minute indicating systems contains a

Back 60

2-pole permanent magnet rotor and a 3-phase stator

Front 61

The N¹ and N² RPM tapes indicate a percentage of RPM from 0 to

Back 61

110

Front 62

Which device on the sensor-driven N¹ RPM indicator represents the maximum achieved RPM during an overspeed condition?

Back 62

N¹ maximum pointer

Front 63

The BIT is initiated by rotating a small screw on the front of the N¹ revolutions per minute indicator

Back 63

45º clockwise

Front 64

The amount of current produced when the hot junction in the vertical scale exhaust gas temperature indicating system is heated is dependent on the difference in temperature between the

Back 64

hot and cold junctions

Front 65

The purpose of the cold junction compensator in the vertical scale exhaust gas temperature indicating system is to compensate for

Back 65

changes in ambient temperature

Front 66

Which malfunction would cause and exhaust gas temperature indicator to read off scale high?

Back 66

Feedback signal from the indicator to the converter lost

Front 67

The fuel flow transmitter motor drives the impeller at a

Back 67

constant 60 RPM

Front 68

On the vertical scale fuel flow indicator, each numbered increment is read as

Back 68

pounds per hour x 1000

Front 69

What type of mechanical sensing device is contained in the vertical scale analog engine pressure ratio transducer?

Back 69

Dual bellows

Front 70

What positions the tape and moves the rotor of the control transformer in the engine pressure ratio indicator?

Back 70

Geartrain

Front 71

Instead of using a dual bellows sensing element, the digital engine pressure ratio transducer uses a

Back 71

piezoresistive pressure sensing element

Front 72

The only moving part in the oil pressure indicator is the

Back 72

rotor

Front 73

What indication is displayed on the oil pressure indicator when there is an open rotor lead in the transmitter?

Back 73

inoperative

Front 74

What indication is displayed on the oil pressure indicator when the transmitter vent Bourdon tube has a leak?

Back 74

High

Front 75

The torquemeter assembly consists of a torquemeter housing assembly, torquemeter pickup assembly, and

Back 75

two concentric shaft assemblies

Front 76

The torquemeter indicator displays torque value in

Back 76

inch-pounds from -4,000 to 28,000

Front 77

Before you can calibrate the torquemeter indicating system, you must obtain

Back 77

air temperature and barometric pressure

Front 78

After the torquemeter indicator is adjusted, you must return the switch on the back of the indicator to what position?

Back 78

R

Front 79

What are the two mechanical adjustments on the resistance liquid quantity indicating system?

Back 79

Centering and range

Front 80

The unshielded wire used as a power lead is called

Back 80

Lo-Z

Front 81

The shielded wire used as a signal lead is called

Back 81

Hi-Z

Front 82

Which fuel quantity tester is approved as safe for use with fuel in the tank?

Back 82

PSD60-1AF

Front 83

An open compensator in the fuel quantity indicating system causes the

Back 83

reference leg to decrease

Front 84

What happens to the output of a fuel quantity probe as the dielectric constant of the fuel increases?

Back 84

Capacitance increases, capacitive reactance decreases, and current increases

Front 85

The DC fuel quantity indicating system is less susceptible to inaccuracies caused by fuel contamination because of higher frequency probe excitation and

Back 85

more space between the tubes

Front 86

The DC fuel quantity indicating system does not need coaxial cables between the probes and indicator because the

Back 86

DC current sensor cannot sense stray capacitance

Front 87

The DC fuel quantity indicating system uses a compensation capacitor to correct for variations in

Back 87

fuel density

Front 88

When the DC fuel quantity indicating system self-test switch is pressed, the indicators should read

Back 88

98 percent (+/- 2 percent) full

Front 89

What components eliminate the requirement to have numerous fuel probes in the fuel tanks?

Back 89

Attitude sensors

Front 90

The three operational modes as selected on the fuel center of gravity management system's panel are OPT CRUISE,

Back 90

NORM, and SET

Front 91

What mode is entered when both intermediate devices experience a signal conditioning processor test failure?

Back 91

Throughput