Module 5 1

71問 • 1年前

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問題一覧

A single mode fibre operates best with what type of light source

Laser

Fibre optic cable consists of

a silica glass core with a cladding having a lower refractive index

The angle between the reflected wave and the normal is called

the angle of reflection

The core size which is typically around 8 to 10 micrometers is related to

Multimode Fibres

The refractive index of a core that is uniform and undergoes and abrupt change at the core- cladding boundary is what type of fiber

Step index fiber

The Ribbon cables design has

the highest fiber capacity, it can hold 204 fibers in a 0.5 inch cable

A typical fiber optic connector is

coupling type with lens fitted

The refractive index of the core varies gradually as a function of radial distance from the fibre centre this is

graded - index fibre

What kind of light is used in fibre optic systems

Infrared

The code for red colour in RGB colour production is

100

Unlike the black and white CRT the colour CRT has

three electron guns each dedicated to one of the primary colours, red, green, or blue

The white colour production from the three primary colours represented by

-111

If the magnetic field is parallel to the Y plate the direction of beam movement will be

vertical axis

Touching connector pins or other exposed conductors could cause

damage to component may result

The resistance of the wrist strap used as part of uni-static precaution should be

250 kilohm- 1.5 megohms

The devices Ability to dissipate the energy of discharge or withstand current levels involved is known as

device ESD sensitivity. Or ESD susceptibility

Before removing an assembly from an aircraft, with regards to HIRF, you must first ensure that

there is minimum current flow between you and the assembly

When handling PCBs labeled ESDS the precaution are taken

isolate electrical power before installing on aircraft

Before removing a card, electrical power sources should be

isolated

Software can be modified by

using the same rules as to modifications to hardware

Level A

Catastrophic failure

ailure conditions which prevent continued safe flight and landing

Failure may cause crash error or loss of critical function required to safety fly and land aircraft is

Catastrophic

What is the effect of a level 1 software failure

Loss of aircraft and /or fatalities

An aircraft system allocated a Criticality Category of Hazardous has software level of

Suppose failure in level E software this will cause

no effect

Modification to software will be subjected to the same approval procedures as are applied to

hardware modifications

Collection of data where the computer gets specific information is

Databases

What is the Software Media

Device that contains a copy of the software

All passenger seats are addressable means

by the computer which transmit data through the network directly to individual passenger seat

Failure system in the aircraft according to software error cause a significant reduction is safety margin which cause

injures to occupants

Which Document provides guidance to aircraft constructors of software

DO-178B/ED

Which section will summarize the plan and test result:

software Verification plan

Ground loops are prevented by

ground only one end of the

When incorporating an aerial cable it must be

positioned separately from the loom

The avionics bay in the larger aircraft are placed in

below the floor

Electromagnetic compatibility is achieved by

Shielding, screening, earthling, bonding and interference filters

In order to maintain HIRF protection, bonding checks between airframe and electrical components carrying voltages greater than 50 volts RMS or DC or main earth return should not exceed

0.05 ohm

Primary flight display (PFD) and navigation display (ND) are two main display units that together

make up the EFIS for commercial aircraft

To reduce HIRF on radio equipment

ensure all static wicks are in place

HIRF protection of LRUs is provided by

built in filters and overvoltage circuits

The phase shift between the electric field oscillation and magnetic field oscillation is

90⁰

When carrying out a bonding check on a surface protected by anodic film

The anodic film should be removed locally to ensure a good contact

When clamping cable looms containing co-axial cables

avoid distortion to it, to maintain the dielectric constant.avoid distortion to it, to maintain the dielectric constant

Testing of HIRF on aircraft system is done

at and during production and testing (initial certification

In airbus core on board information system (OIS) a servicing tool used for the refueling operation is a part of

avionics domain

All the information necessary for maintenance and trouble shooting is memorized in

Non Volatile Memory

Laser gyros, accelerometer and power supply output, computer and memory operation , and temperature parameters continually monitored by

built-in test equipment (BITE)

Aircraft communication addressing and reporting systems is used to

download aircraft status reports

The ACARS is used to

transmit or receive automatically or manually generated reports or messages to or from a ground station

The cabin crew can get access to the cabin applications via

flight attendant panel or internal wireless data link

The global positioning system (GPS) use the same principle as

DME

Fly-By-Wire system Flight control surfaces are all

Electrically-controlled, Hydraulically-activatedElectrically-controlled, Hydraulically-activated

Rudder control

yaw

Rudder control

yaw

The function of ring laser gyro is to measure

angular rotation

In fly by wire how many flight control computer are there

seven computers

In fly by wire the maximum deflection of aileron is

25degree

Memory that retains data when power is removed is

non-volatile memory

A computer which is used as a primary source of information or data is called

reference computer

The colour that produced by DU which used during inflight engine starting and cross bleed message is

Magenta

According to GPS providing correct timing each satellite carries

a very accurate atomic clock

The American Global Positioning System (GPS), also called NAVSTAR

uses 24 satellites, with three or more spares, in orbit at any one time

The system which calculates a vertical profile that giver the shortest possible flying time at the lowest fuel consumption is

FMS

The color used for middle marker is

amber

How many accelerometers are there in the INS system

two accelerometers

What are interrogator transmitter and receiver frequencies

1030 MHz and 1090 MHz

In TCAS IF the monitoring system detects a problem

it switching off the interrogator warns the crew and sends mode S message to ground interrogation

In TCAS II the voice command – climb, crossing climb-means

Climb at 1500 ft./min through the intruders altitude

Fibre Optic basic functions

To convert an electrical input signal to an optical signal ,To send the optical signal over an optical fibre ,To convert the optical signal back to an electrical signal

The function of ring laser gyro is to measure

angular rotation

Module5

Module5

Module 2

Module 2

Module2 /1

Module2 /1

Module9

Module9

Module 10

Module 10

Module 10/1

Module 10/1

Module 6

Module 6

Module 6/1

Module 6/1

Module 6/2

Module 6/2

問題一覧

A single mode fibre operates best with what type of light source

Laser

Fibre optic cable consists of

a silica glass core with a cladding having a lower refractive index

The angle between the reflected wave and the normal is called

the angle of reflection

The core size which is typically around 8 to 10 micrometers is related to

Multimode Fibres

The refractive index of a core that is uniform and undergoes and abrupt change at the core- cladding boundary is what type of fiber

Step index fiber

The Ribbon cables design has

the highest fiber capacity, it can hold 204 fibers in a 0.5 inch cable

A typical fiber optic connector is

coupling type with lens fitted

The refractive index of the core varies gradually as a function of radial distance from the fibre centre this is

graded - index fibre

What kind of light is used in fibre optic systems

Infrared

The code for red colour in RGB colour production is

100

Unlike the black and white CRT the colour CRT has

three electron guns each dedicated to one of the primary colours, red, green, or blue

The white colour production from the three primary colours represented by

-111

If the magnetic field is parallel to the Y plate the direction of beam movement will be

vertical axis

Touching connector pins or other exposed conductors could cause

damage to component may result

The resistance of the wrist strap used as part of uni-static precaution should be

250 kilohm- 1.5 megohms

The devices Ability to dissipate the energy of discharge or withstand current levels involved is known as

device ESD sensitivity. Or ESD susceptibility

Before removing an assembly from an aircraft, with regards to HIRF, you must first ensure that

there is minimum current flow between you and the assembly

When handling PCBs labeled ESDS the precaution are taken

isolate electrical power before installing on aircraft

Before removing a card, electrical power sources should be

isolated

Software can be modified by

using the same rules as to modifications to hardware

Level A

Catastrophic failure

ailure conditions which prevent continued safe flight and landing

Failure may cause crash error or loss of critical function required to safety fly and land aircraft is

Catastrophic

What is the effect of a level 1 software failure

Loss of aircraft and /or fatalities

An aircraft system allocated a Criticality Category of Hazardous has software level of

Suppose failure in level E software this will cause

no effect

Modification to software will be subjected to the same approval procedures as are applied to

hardware modifications

Collection of data where the computer gets specific information is

Databases

What is the Software Media

Device that contains a copy of the software

All passenger seats are addressable means

by the computer which transmit data through the network directly to individual passenger seat

Failure system in the aircraft according to software error cause a significant reduction is safety margin which cause

injures to occupants

Which Document provides guidance to aircraft constructors of software

DO-178B/ED

Which section will summarize the plan and test result:

software Verification plan

Ground loops are prevented by

ground only one end of the

When incorporating an aerial cable it must be

positioned separately from the loom

The avionics bay in the larger aircraft are placed in

below the floor

Electromagnetic compatibility is achieved by

Shielding, screening, earthling, bonding and interference filters

In order to maintain HIRF protection, bonding checks between airframe and electrical components carrying voltages greater than 50 volts RMS or DC or main earth return should not exceed

0.05 ohm

Primary flight display (PFD) and navigation display (ND) are two main display units that together

make up the EFIS for commercial aircraft

To reduce HIRF on radio equipment

ensure all static wicks are in place

HIRF protection of LRUs is provided by

built in filters and overvoltage circuits

The phase shift between the electric field oscillation and magnetic field oscillation is

90⁰

When carrying out a bonding check on a surface protected by anodic film

The anodic film should be removed locally to ensure a good contact

When clamping cable looms containing co-axial cables

avoid distortion to it, to maintain the dielectric constant.avoid distortion to it, to maintain the dielectric constant

Testing of HIRF on aircraft system is done

at and during production and testing (initial certification

In airbus core on board information system (OIS) a servicing tool used for the refueling operation is a part of

avionics domain

All the information necessary for maintenance and trouble shooting is memorized in

Non Volatile Memory

Laser gyros, accelerometer and power supply output, computer and memory operation , and temperature parameters continually monitored by

built-in test equipment (BITE)

Aircraft communication addressing and reporting systems is used to

download aircraft status reports

The ACARS is used to

transmit or receive automatically or manually generated reports or messages to or from a ground station

The cabin crew can get access to the cabin applications via

flight attendant panel or internal wireless data link

The global positioning system (GPS) use the same principle as

DME

Fly-By-Wire system Flight control surfaces are all

Electrically-controlled, Hydraulically-activatedElectrically-controlled, Hydraulically-activated

Rudder control

yaw

Rudder control

yaw

The function of ring laser gyro is to measure

angular rotation

In fly by wire how many flight control computer are there

seven computers

In fly by wire the maximum deflection of aileron is

25degree

Memory that retains data when power is removed is

non-volatile memory

A computer which is used as a primary source of information or data is called

reference computer

The colour that produced by DU which used during inflight engine starting and cross bleed message is

Magenta

According to GPS providing correct timing each satellite carries

a very accurate atomic clock

The American Global Positioning System (GPS), also called NAVSTAR

uses 24 satellites, with three or more spares, in orbit at any one time

The system which calculates a vertical profile that giver the shortest possible flying time at the lowest fuel consumption is

FMS

The color used for middle marker is

amber

How many accelerometers are there in the INS system

two accelerometers

What are interrogator transmitter and receiver frequencies

1030 MHz and 1090 MHz

In TCAS IF the monitoring system detects a problem

it switching off the interrogator warns the crew and sends mode S message to ground interrogation

In TCAS II the voice command – climb, crossing climb-means

Climb at 1500 ft./min through the intruders altitude

Fibre Optic basic functions

To convert an electrical input signal to an optical signal ,To send the optical signal over an optical fibre ,To convert the optical signal back to an electrical signal

The function of ring laser gyro is to measure

angular rotation