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Module 6/2
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  • 問題数 97 • 2/18/2025

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    問題一覧

  • 1

    Compared to other types of electrical connectors crimping does not have the advantage of

    assembly without tools

  • 2

    Needle bearings resist

    radial load only

  • 3

    In general, the cages for bearings can be classified as

    pressed, solid or pin-type cages

  • 4

    is an acceptable safety device for a turnbuckle to be locked when installed on aircraft cable.

    Spring clip

  • 5

    Pulleys are usually manufactured from

    resin impregnated fibre materials

  • 6

    are the transmission forms that are typically used on aircraft.

    Belt and pulley drives, Screw jacks and Chains

  • 7

    The temperature rating of an airframe cable is determined by

    its construction

  • 8

    another name for Pneumatic springs is

    gas dampeners

  • 9

    The removable half which mates with the receptacle and is usually

    at the end of a cable/lead

  • 10

    Linear expansion of a rotating shaft in housing can be compensated for by using

    roller bearings

  • 11

    Cables have a specified maximum continuous operating temperature and for many types in general, it is undesirable to contribute more

    than 40⁰C rise by electrical heating and that operating temperature and installed life are directly related

  • 12

    are necessary in a main rotor gearbox of helicopter.

    Conformal gears

  • 13

    are the most common and cheapest type of gears

    Spur gears

  • 14

    A single angular contact bearing can take

    radial loads and axial loads in one direction only

  • 15

    There are commonly four types of cable strippers available which are:

    A rotary device which cuts around the cable ❖ A four-action device, which is a high precision cut and strip tool

  • 16

    is the permanent distortion which occurs when a spring is stressed beyond of the elastic limit of the material

    set

  • 17

    the purpose of bell cranks is

    to make angle changes between push-pull rods and to gain mechanical advantages

  • 18

    are toothed wheels used to transmit power between components of a machine where the centre distances between the shafts is limited.

    Chains

  • 19

    is a type of bearings have two rows of spherical rollers with a common spherical path on the outer ring

    Toroidal (crowned) roller bearings

  • 20

    Springs are mainly made from

    carbon spring steel, Inconel or stainless steel

  • 21

    An interconnect cable has what insulation

    Thinner than airframe cable

  • 22

    Control cables of American and European manufacture are classified by their

    nominal diameter

  • 23

    What type of insulation cannot be stripped with thermal strippers

    PTFE

  • 24

    Tin plated copper maximum continuous temperature

    135ºC

  • 25

    Brass springs has good electrical conductivity

    but is unsuitable for high-stress applications.

  • 26

    Many bearings are prone to experiencing both

    radial and thrust loads

  • 27

    Aluminium cable where large amounts of current must be carried for

    long distances

  • 28

    If both the drive gear and driven gear have the identical number of teeth

    no mechanical advantage is gained

  • 29

    The purpose of keyways on a connector to

    allow only plug and receptacle of the same orientation to be connected together

  • 30

    The vast majority of aircraft control cables are terminated with swaged terminals , that must be checked with

    go-no-go gauge before and after

  • 31

    Spring index is

    the ratio of mean coil diameter to wire diameter C= D/d

  • 32

    Mechanical protection can be provided for the cable by routing the bundles through either

    flexible or rigid conduit

  • 33

    is used on many Cessna aircraft landing gear.

    Leaf spring

  • 34

    Light – and medium-sized aircraft .

    Bungee cords may be encountered on many

  • 35

    The main reason for a slipping belt of pulley is

    too much pre-tensioning

  • 36

    is a type of gear would be used on propeller reduction gearbox

    Epicycle

  • 37

    metallic springs may require corrosion protection. Protective coatings may be of

    plastic, zinc, nickel, chromium or tin

  • 38

    Cable fairleads should usually

    never be lubricated

  • 39

    Worm drives operated in shafts which are

    non-parallel and non-intersecting

  • 40

    Co‑axial cable is used as a transmission line for

    radio frequency (RF) signals

  • 41

    Bevel gears are used to transmit power between

    shafts in the same axis

  • 42

    What cable would you use where temperatures are going to exceed 200 degrees C

    Nickel plated

  • 43

    Control cable are protected from riding off the pulley by

    Guards

  • 44

    The larger diameter on a bevel gear is called

    heel

  • 45

    Tapered roller bearings consist of

    cone shaped inner and a cup shaped outer race and tapered rollers

  • 46

    loads on tapered roller bearings are

    radial and thrust

  • 47

    Needle roller bearings are used

    where space saving is an important factor

  • 48

    The most commonly used wrapped insulation material is

    Kapton

  • 49

    What is the purpose of screening on a coaxial cable

    To prevent EMF radiating out from the Core cable and prevent induced EMF into the core

  • 50

    Custom shaped compression springs include

    conical, hourglass or barrel shaped

  • 51

    to make changes in direction of a control cable

    Pulleys

  • 52

    TNC used in

    a high vibration area

  • 53

    Oxide on exposed silver plated wire is

    an insulator

  • 54

    The ability of a cable to withstand abrasion is determined by the size and composition of the outer wires and

    the construction of the cable

  • 55

    coating Kapton insulation with a layer of Teflon is a way of

    reducing the risk of arc tracking

  • 56

    How are flexible hoses categorized

    By maximum pressure

  • 57

    On a chain assembly , a change in direction of straight line motion in two planes is achieved by

    using bi-planer blocks

  • 58

    A small amount of shaft misalignment can be tolerated by using

    toroidal roller bearing type

  • 59

    A cable tension regulator will be installed in a flying control system to

    allow for variations in temperature which will vary the cable tension

  • 60

    The TNC (threaded nut coupling) series connector is a threaded version of the BNC and operates to the same specification as

    the BNC connector

  • 61

    There are a number of factors to consider when choosing the correct cable, these are

    Flexibility of the cable

  • 62

    The teeth of a gear would normally

    case hardened

  • 63

    There are two types of Co‑axial connector

    TNC and BNC

  • 64

    Elasticity is the property of the springs which allows them to absorb energy

    by distorting or deflecting under load

  • 65

    A crankshaft would be fitted with a

    spherical roller bearing

  • 66

    Spherical roller bearings

    can accept a small amount of misalignment

  • 67

    Spring hooks are subjected to

    bending load

  • 68

    When two gears are running together the larger one is called

    a gear

  • 69

    Use of crimped splices in

    aircraft electrical cables

  • 70

    If all instructions issued by the swaging tool manufacturer are followed when swaging a cable terminal, the resultant swaged terminal strength should be

    the full rated strength of the cable

  • 71

    7x7 control cable has seven strands wire each with

    7 wires

  • 72

    Interconnect cables employ

    thinner insulation than airframe types

  • 73

    spherical bearings. consist of an inner and outer race separated by single row of hardened

    steel rollers instead of balls

  • 74

    is the most important factor that can affect a choice of material for using in springs

    The strength of the material

  • 75

    Non-reversible chains are similar to standard chains except that each outer plate is extended in

    one direction in order to break up the symmetry of the chain to prevent the chain from being assembled incorrectly

  • 76

    Aircraft control cable designated as 7x19

    consists of 7 strands, each containing 19 wires

  • 77

    Pneumatic spring to

    dampen out dynamic motion in mechanical systems

  • 78

    Nickel clad plated copper maximum continuous temperature

    260ºC

  • 79

    Most aircraft shock absorber is a

    helical compression spring

  • 80

    control cable is considered non flexible cable.

    1x7

  • 81

    The size of the conduit is normally an inside diameter

    25% larger than the diameter of the cable bundle being encased

  • 82

    When not under load a pair of gears

    sits in the middle

  • 83

    cable is flexible only in one plane

    A bowdenflex

  • 84

    A crimped splice is never to be used in

    a multi-core cable

  • 85

    When two gears are running together the smaller one is called

    a pinion

  • 86

    A mechanical device used to reduce friction and guide motion of two or more parts which articulate in differing directions.

    Bearing

  • 87

    If a spring has ‘closed ends’ the first and last coils have

    zero pitch

  • 88

    Restricted entry for the ring tongue terminals are

    identified by a thin coloured band along the barrel insulator

  • 89

    After swaging an end fitting onto a flexible control cable with a Nicopress tool, it is it tested for adequate deformation by

    using a go/no-go gauge

  • 90

    The TNC (threaded nut coupling) series connector is a threaded version of the BNC and operates to the same specification as the

    BNC connector

  • 91

    Thermal removes the insulation

    by melting

  • 92

    Material commonly used as the dielectric in Co‑axial cable is

    polyethylene

  • 93

    An American type Turnbuckle is in safety when

    all of the fitting threads are engaged in the barrel

  • 94

    Dielectric loss in coaxial cable result from

    heating the dielectric material (insulation)

  • 95

    The receptacle is normally part of the equipment or

    structure and is stationary

  • 96

    Aircraft control cable designated as 7x7

    consists of 7 strands, each containing 7 wires

  • 97

    The TNC series of connectors are used

    predominately where vibration is a major factor as they rely on external locking for security