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Cables & Cords - All Questions

Total questions: 65

Worksheet time: 33mins

Name
Class
Date
1.

In accordance with which section of AS/NZS 3000 should cables be selected & installed?

a)

Section 1

b)

Section 2

c)

Section 3

d)

Section 4

2.

State the reference in AS/NZS 3.3.2.2 that defines flexible cords.

a)

1.4.30

b)

1.4.26

c)

1.4.32

d)

1.4.36

3.

What colours are used in NZ for Phase, Neutral & Earth conductors in single phase flexible leads?

a)

They are all the same colour

b)

Brown, Blue & Green/Yellow

c)

Red, Black & Green

d)

Brown, Blue and Green

4.

Which of the following is not mentioned by AS/NZS 3000 3.3.2.2 for dealing with cables near external heat sources?

a)

Shielding

b)

Limiting the current in the cable to reduce operating temp.

c)

Selecting a system that allows for temperature rise.

d)

Wrapping the cable in Polystyrene.

e)

Placing cables away from heat source.

5.

Which enviromental condition explains a Cable situation that needs to be suitable to cope with moisture to prevent shock, fire or malfunction.

a)

Flexing

b)

Moisture, water, and other liquids

c)

Mechanical damage

d)

Vibration

6.

Which enviromental condition explains a Cable situation where cable has been damaged by hitting, squashing, cutting, bending, or stretching?

a)

Mechanical Damage

b)

Vibration

c)

High temperature

d)

Weight or Strain

7.

Which enviromental condition explains a Cable situation where selection is made in accordance with AS/NZS 3000 7.7, so that those cables can survive for longer in a fire?

a)

High Temperature

b)

Vibration

c)

Solvents, chemicals, oil, or petrol

d)

Hazardous areas and fire

8.

Which enviromental condition explains a Cable situation where cables can cope with a littlebit of this - if it is excessive then flexible cable is used

a)

Flexing

b)

Mechanical damage

c)

Weight or strain on a cable

d)

Vibration

9.

Which enviromental condition explains a Cable situation that requires cables to be able to deal with (AS/NZS 3000 3.3.2.7)?

a)

High Temperature

b)

Flexing

c)

Mechanical Damage

d)

Vibration

10.

Which enviromental condition explains a Cable situation where Insulation on plastic and rubber insulated cables can melt and fail if they get too hot.

a)

Moisture, water, and other liquids

b)

High Temperature

c)

Solvents, chemicals, oil, or petrol

d)

Weather/UV radiation, marine environments. dust

11.

Which enviromental condition explains a Cable situation that dissolves insulation and affects insulation resistance and cable structure?

a)

Weight or strain on a cable

b)

Moisture, water, and other liquids

c)

Solvents, chemicals, oil, or petrol

d)

High Temperature

12.

Which enviromental condition explains a Cable situation where operation can occurs in driving rain and direct sunshine, or sea salt, or saw dust, grain or powder.

a)

Weather/UV radiation, marine environments. dust

b)

Solvents, chemicals, oil, or petrol

c)

Moisture, water, and other liquids

d)

Weight or strain on a cable

13.

Which conductor has greater conductivity?

a)

Copper

b)

Aluminium

14.

Which conductor is lighter and cheaper?

a)

Copper

b)

Aluminium

15.

Which conductor is heavier and more expensive?

a)

Copper

b)

Aluminium

16.

Which conductor has lower conductivity?

a)

Copper

b)

Aluminium

17.

Which conductor is suited to general enviromental applications?

a)

Copper

b)

Aluminium

18.

Which conductor is suited to aerial cables/power distribution applications?

a)

Copper

b)

Aluminium

19.

Which conductor is best suited to domestic/commercial subcircuits or short mains runs?

a)

Copper

b)

Aluminium

20.

Which conductor is best suited to long mains/submains runs?

a)

Copper

b)

Aluminium

21.

Which conductor is cheaper than stranded conductors?

a)

Solid Conductors

b)

Stranded Conductors

c)

Fine Stranded Conductors

22.

Which conductor is more flexible than solid conductors?

a)

Solid Conductors

b)

Stranded Conductors

c)

Fine Stranded Conductors

23.

Which conductor core type allows for the production of bigger conductors?

a)

Solid Conductors

b)

Stranded Conductors

c)

Fine Stranded Conductors

24.

Which conductor core type offers the best flexibility?

a)

Solid Conductors

b)

Stranded Conductors

c)

Fine Stranded Conductors

25.

Which conductor core type is not very flexible and breaks easily?

a)

Solid Conductors

b)

Stranded Conductors

c)

Fine Stranded Conductors

26.

Which conductor core type costs more than solid conductors?

a)

Solid Conductors

b)

Stranded Conductors

c)

Fine Stranded Conductors

27.

Which conductor core type costs more than stranded conductors?

a)

Solid Conductors

b)

Stranded Conductors

c)

Fine Stranded Conductors

28.

Which conductor core type is suitable for smaller fixed wiring applications like lighting?

a)

Solid Conductors

b)

Stranded Conductors

c)

Fine Stranded Conductors

29.

Which conductor core type is suitable for general fixed wiring applications like power outlet circuits?

a)

Solid Conductors

b)

Stranded Conductors

c)

Fine Stranded Conductors

30.

Which conductor core type is suitable for general wiring applications prone to movement like cords to appliances/extension leads?

a)

Solid Conductors

b)

Stranded Conductors

c)

Fine Stranded Conductors

31.

What is a way that you could determine the size of a cable?

a)

Check the markings on the drum.

b)

Check the marking on the sheath.

c)

Compare it to a known conductor for size.

d)

Use a crimp lug or link, slip it over the cable to check the size.

e)

All of the above.

32.

Which sheathing type is the smallest but provides the least insulation and mechanical protection?

a)

Unsheathed Cables

b)

Sheathed Cables

c)

Braided Sheath Flex Cables

d)

Armoured Cables

33.

Which sheathing type is larger but provides more insulation and mechanical protection?

a)

Unsheathed Cables

b)

Sheathed Cables

c)

Braided Sheath Flex Cables

d)

Armoured Cables

34.

Which sheathing type is suitable for general fixed wiring but needs additional mechanical protection?

a)

Unsheathed Cables

b)

Sheathed Cables

c)

Braided Sheath Flex Cables

d)

Armoured Cables

35.

Which sheathing type is suitable for general fixed wiring?

a)

Unsheathed Cables

b)

Sheathed Cables

c)

Braided Sheath Flex Cables

d)

Armoured Cables

36.

Which sheathing type is stronger and mechanically protected than non-braided, but with a higher cost and larger size/weight?

a)

Unsheathed Cables

b)

Sheathed Cables

c)

Braided Sheath Flex Cables

d)

Armoured Cables

37.

Which sheathing type is the strongest and most resilient, but with a high cost than the others?

a)

Unsheathed Cables

b)

Sheathed Cables

c)

Braided Sheath Flex Cables

d)

Armoured Cables

38.

Which sheathing type is suitable for movement and flexibilty and rough mechanical treatment, like in an industrial factory ?

a)

Unsheathed Cables

b)

Sheathed Cables

c)

Braided Sheath Flex Cables

d)

Armoured Cables

39.

Which sheathing type is suitable for rough mechanical treatment, where cable could be chased into rock or run in concrete ?

a)

Unsheathed Cables

b)

Sheathed Cables

c)

Braided Sheath Flex Cables

d)

Armoured Cables

40.

What of thefollowing is the best requirement of cable insulation?

a)

Stop current flow or leakage

b)

Have high strength against insulation breakdown

c)

Have protective strength against handling, impact and abrasion

d)

All of them - all are equally important

41.

What of the following is the best requirement of cable insulation?

a)

retain properties in all expected temperatures

b)

Not be damaged or degraded by chemicals

c)

Keep moisture out

d)

All of them - all are equally important

42.

According to Table 3.8 of AS/NZS 3000, what conductor colours can be used for Protective Earth or Equipotential Bonding?

a)

Green/Yellow

b)

Black or Light Blue

c)

Any other colour than green, yellow, black or light blue

43.

According to Table 3.8 of AS/NZS 3000, what conductor colours can be used for Neutral?

a)

Green/Yellow

b)

Black or Light Blue

c)

Any other colour than green, yellow, black or light blue

44.

According to Table 3.8 of AS/NZS 3000, what conductor colours can be used for Active/Phase?

a)

Green/Yellow

b)

Black or Light Blue

c)

Any other colour than green, yellow, black or light blue

45.

In a single-phase flexible cable, which are the currently accepted colours?

a)

Phase = Red

Neutral = Black

Earth = Green

b)

Phase = Red

Neutral = Blue

Earth = White

c)

Phase = Brown

Neutral = Blue

Earth = Green/Yellow

d)

Phase = Brown

Neutral = Black

Earth = Yellow

46.

In a multi-phase flexible cable, which are the commonly used colours?

a)

Phase 1 = Red

Phase 2 = White

Phase 3 = Blue

Neutral = Black

Earth = Green/Yellow

b)

Phase 1 = Brown

Phase 2 = Black

Phase 3 = Grey

Neutral = Blue

Earth = Green/Yellow

c)

All of the above

47.

Which Insulation is commonly used for general fixed wiring or flexible cords, but can become brittle in extreme temperatures?

a)

PVC Insulation

b)

Non Migratory PVC Insulation

c)

Low Smoke PVC Insulation

d)

VIR/TRS

48.

Which Insulation is commonly used for installation in bitumen/polystryrene, as it will not leach its ploymers and become brittle?

a)

VIR/TRS

b)

PVC Insulation

c)

Low Smoke PVC Insulation

d)

Non Migratory PVC Insulation

49.

Which Insulation is commonly used for general wiring in areas where safer visibility is required during a fire?

a)

PVC Insulation

b)

Non Migratory PVC Insulation

c)

Low Smoke PVC Insulation

d)

VIR/TRS

50.

Which Insulation is commonly used for general use flexible cords and is a natural product?

a)

VIR/TRS

b)

PVC Insulation

c)

Low Smoke PVC Insulation

d)

Non Migratory PVC Insulation

51.

Which Insulation is commonly used for Flexible Cables that expect rough treatment, yet still very flexible?

a)

EPC Synthetic Rubber Insulation

b)

HOFR Insulation

c)

Silicon Rubber Insulation

d)

Fire Resistant Insulation

52.

Which Insulation is commonly used for Flexible Cables with medium strength and resistant to high temperatures, like soldering irons and welding machines?

a)

EPC Synthetic Rubber Insulation

b)

Silicon Rubber Insulation

c)

HOFR Insulation

d)

Fire Resistant Insulation

53.

Which Insulation is commonly used for Flexible Cables in very hot or cold enviroments, like heating and cooking appliances?

a)

HOFR Insulation

b)

Fire Resistant Insulation

c)

EPC Synthetic Rubber Insulation

d)

Silicon Rubber Insulation

54.

Which Insulation is commonly used for hen short term cable survival is required like in lifts, fire systems and emergency lighting?

a)

HOFR Insulation

b)

Fire Resistant Insulation

c)

EPC Synthetic Rubber Insulation

d)

Silicon Rubber Insulation

55.

Which Insulation is commonly used for when longer-term fire survival is required but requires specialised installation techniques?

a)

VIR/TRS

b)

PE Insulation

c)

MIMS Cable

d)

XLPE Insulation

56.

Which Insulation is commonly used for sheathing power distribution cables?

a)

PVC Insulation

b)

PE Insulation

c)

MIMS Cable

d)

XLPE Insulation

57.

Which Insulation is commonly used for sheathing power distribution cable cores?

a)

PVC Insulation

b)

PE Insulation

c)

MIMS Cable

d)

XLPE Insulation

58.

Which type of cable is stacks well, is economical to make, but can get twisted and is harder to bend smoothly?

a)

Flat TPS

b)

Circular TPS

c)

Normal Duty Flexible Cords/Cable

d)

Heavy Duty Flexible Cable

e)

Neutral Screen

59.

Which type of cable offers superior safety and mechanical protection when used as underground mains?

a)

Flat TPS

b)

Circular TPS

c)

Normal Duty Flexible Cords/Cable

d)

Heavy Duty Flexible Cable

e)

Neutral Screen

60.

Which type of cable is used for cheaper, general use flexible cords?

a)

Flat TPS

b)

Circular TPS

c)

Normal Duty Flexible Cords/Cable

d)

Heavy Duty Flexible Cable

e)

Neutral Screen

61.

Which type of cable is used for installation on cable trays and is flexible, and a good choice for 3 phase Motor supply cable?

a)

Flat TPS

b)

Circular TPS

c)

Normal Duty Flexible Cords/Cable

d)

Heavy Duty Flexible Cable

e)

Neutral Screen

62.

Which type of cable is used for flexible installation where extra toughness is required?

a)

Flat TPS

b)

Circular TPS

c)

Normal Duty Flexible Cords/Cable

d)

Heavy Duty Flexible Cable

e)

Neutral Screen

63.

Which best describes cable current rating capacity?

a)

The minimum current they can continuously carry safely without overheating the insulation.

b)

The maximum current they can continuously carry safely without overheating the conductor.

c)

The maximum current they can continuously carry safely without overheating the insulation.

d)

The minimum current they can continuously carry safely without overheating the conductor.

64.

Which standard is used to work out the current carrying capacity of cables in New Zealand?

a)

AS/NZS 3008 1.1

b)

AS/NZS 3000 1.1

c)

AS/NZS 3000 1.2

d)

AS/NZS 3008 1.2

65.

Which table within AS/NZS 3000 gives the temperature limits for various cable core insulation types?

a)

AS/NZS 3000 1.2 Table 58

b)

AS/NZS 3008 1.2 Table 53

c)

AS/NZS 3000 1.2 Table 53

d)

AS/NZS 3008 1.2 Table 55