問題一覧
1
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
2
The temperature rating of an airframe cable is determined by
its construction
3
The receptacle is normally part of the equipment or
structure and is stationary.
4
The removable half which mates with the receptacle and is usually
at the end of a cable/lead
5
The purpose of keyways on a connector to
allow only plug and receptacle of the same orientation to be connected together
6
TNC used in
a high vibration area,
7
The TNC (threaded nut coupling) series connector is a threaded version of the BNC and operates to the same specification as the
BNC connector
8
There are two types of Co‑axial connector
TNC and BNC
9
Restricted entry for the ring tongue terminals are
identified by a thin coloured band along the barrel insulator.
10
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
11
Material commonly used as the dielectric in Co‑axial cable is
polyethylene
12
Tin plated copper maximum continuous temperature →
135ºC
13
Nickel clad plated copper maximum continuous temperature →
260ºC
14
What cable would you use where temperatures are going to exceed 200 degrees C?
Nickel plated
15
What type of insulation cannot be stripped with thermal strippers?
PTFE
16
coating Kapton insulation with a layer of Teflon is a way of
reducing the risk of arc tracking
17
Oxide on exposed silver plated wire is
an insulator
18
Interconnect cables employ
thinner insulation than airframe types,
19
An interconnect cable has what insulation?
Thinner than airframe cable
20
Dielectric loss in coaxial cable result from
heating the dielectric material (insulation)
21
Use of crimped splices in
aircraft electrical cables
22
A crimped splice is never to be used in
a multi-core cable
23
Compared to other types of electrical connectors crimping does not have the advantage of
assembly without tools
24
The TNC (threaded nut coupling) series connector is a threaded version of the BNC and operates to the same specification as
the BNC connector.
25
The TNC series of connectors are used
predominately where vibration is a major factor as they rely on external locking for security.
26
Mechanical protection can be provided for the cable by routing the bundles through either
flexible or rigid conduit.
27
The size of the conduit is normally an inside diameter
25% larger than the diameter of the cable bundle being encased.
28
How are flexible hoses categorized?
By maximum pressure
29
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.
30
Thermal removes the insulation
by melting
31
Aluminium cable where large amounts of current must be carried for
long distances,
32
There are a number of factors to consider when choosing the correct cable, these are:
Flexibility of the cable.
33
The most commonly used wrapped insulation material is
Kapton
34
Co‑axial cable is used as a transmission line for
radio frequency (RF) signals
35
High tension leads or high-tension cables or spark plug wires or spark plug cables are the wires that connect
a distributor, ignition coil, or magneto to each of the spark plugs in piston engines.
36
A thermocouple is an electrical device consisting of
two dissimilar conductors forming electrical junctions at differing temperatures.
37
The basic crimped contact connector comes in two parts
the receptacle and the plug
38
The prime considerations that govern the construction of any electrical cable are that it must be:
able to withstand the applied voltages
39
knuckling of conductors which could be severe enough to penetrate the insulation This was induced by applying
excessive pull through forces
40
X on an electrical cable indicates
AC power
41
Occurs when de‑icing fluid contaminate silver plated conductors, an electrical fire can result. Accordingly, silver plated conductors should not be employed in areas where
de‑icing fluid can be present.
42
PTFE-type insulations are often sold under the trade name
Teflon or Tefzel
43
One special type of cable used exclusively for various digital electronic systems is called
data bus cable’.
44
Data bus cable typically consists of
a twisted pair of cables surrounded by electrical shielding and insulators