Which of the following options is not a check for compatibility of characteristics of equipment used?

b) Maintainability of equipment

The number or final circuit required, and the number of points supplied by any final circuit shall be such as to facilitate compliance with the requirements of Chapter 43 as regards?

a) Current-carrying capacity of conductors

Which of the following is an assessment of general characteristics?

a) The external influences to which it is to be exposed

b) The internal electro-magnetic compatibility

c) The rating of the main cut-out fuse

Where the provision of supplies for safety services is required, what conditions may be considered?

d) Emergency evacuation of the premises

a) The maintainability of the installation

b) The reliability of the equipment

c) The effectiveness of protective measures

What may be taken into account when determining the maximum demand of an installation?

d) The nature of the current and frequency

Within a domestic premise's switchgear, similar equipment, and consumer units shall be protected against fire caused by electrical equipment by?

b) Being constructed from non-combustible material

a) Being constructed from insulation material

c) Being constructed from heavy gauge plastic

d) Being constructed from industrial grade polypropylene

In each part of an installation, at least one protective measure must be used? Which of these is not a recognised protective general requirement?

d) ADS (Automatic Disconnection of Supply)

Where protection against overload is being considered in chapter 43, disconnection does not necessarily mean?

a) Through the use of a socket outlet

A circuit protective conductor shall be run to and terminated at each point in the wiring system and at each accessory except?

a) A suspended lamp-holder having no exposed conductive parts

b) A socket-outlet serving a SELV circuit

c) A socket-outlet serving an RCD controlled appliance

d) A luminaire installed outside a building

A commercial fish-breeder has decided to install a reduced low voltage circuit to supply an outdoor pond where the fish stock is kept. What type of source is the installing electrician permitted to install?

a) An engine driven generator independent of the public supply

b) An engine driven generator connected to the public supply

c) A source provided by an IT system

d) A source provided by a TN-C system

A circuit in an installation has been extended; at the junction box, the cable reduces from 4 mm2 to 2.5 mm2• Which of these conditions would not require a protective device to provide protection against fault current for the extended circuit?

d) The extension cable is 2.5 m long

a) The cable is for a control cable for a generator

b) Where disconnection could cause a dangerous condition

c) The circuit supplies a measuring device

An obstacle in an electrical installation may be removed?

d) Without the use of a tool or key but it shall be secured to prevent unintended removal

c) Only with the use of a tool or key

In a TN-C-S system a PEN conductor shall not be used on the load side when?

a) Unearthed ceiling roses to BS:67 are fitted

b) Cables are installed less than 50 mm from plaster board walls

d) The earth fault loop impedance is rather high

Which device is NOT suitable for disconnection whilst carrying current?

a) Switching device to BS EN 60669-2-1

b) Switching device to BS EN 60947-3

c) Contactor to BS EN 60947-4-1

d) Circuit breaker to BS EN 60898

Where 'high reliability' is required in a circuit, the use of which of the following shouId be considered?

c) Use of unearthed auxiliary circuits

In an electrical circuit when connections are made which of the following types of connection must be available for inspection, testing and maintenance?

d) A connection in an enclosure at a height of 1m above ground level

a) A connection between a cold tail and the heating element

When lighting is used in a location where rotating or rapidly moving machine parts are present consideration needs to be given to stroboscopic effects because?

d) The effects cause moving parts to appear stationary

a) The effects can cause harmonics in the supply cables

b) The effects can introduce a neutral current in the supply cables

c) The effects increase the load on the circuit

Band I and Band II circuits are not normally permitted to be installed in the same wiring system, when this does occur and also when a multicore cable is used, the cores of the Band I and II circuits must be separated by?

d) An earthed metal screen of equivalent current-carrying capacity to that of the largest core of the Band II circuit

a) A cable conduit system with separate compartments

b) An earthed trunking system with separate compartments

c) A plastic trunking system with metal screened compartments

A wiring system is installed in an area where the presence of corrosive substances are present, what is a suitable method of providing additional protection to the wiring system?

d) Enclose the wiring system in protective tape

a) Enclose the wiring system in copper tape

b) Enclose the wiring system in plastic tape

c) Enclose the wiring system in aluminium tape

Which one of the following is not considered in BS 7671 for low voltage and extra low voltage installations which incorporate a generating set?

d) Self excited synchronous generators

a) Mains excited synchronous generators

b) Separately excited synchronous generators

c) Self excited asynchronous generators

An electrical installation certificate shall include?

d) Details of the extent of the work covered by the certificate

a) A section with essential tests

b) The reasons for producing the report

c) The limitations of inspection and testing

An initial verification of a new electrical installation, needs to be performed, which of the following does not need to be verified?

d) The circuits insulation resistance

a) Selection of conductors for current-carrying capacity

b) Connection of single-pole devices for protection in line conductor only

c) Correct connection of accessories and equipment

In medical location supplied by an IT system socket outlets supplying medical equipment shall be?

a) Double-pole switched sockets

b) Single-pole switched sockets

Which of the following is the correct description for Zone 2 where a shower has no basin (wet shower)?

a) Up to 2.25 m above finished floor level

b) 0.6 m horizontally from zone 1

In a motor caravan, except for a shaver socket-outlet, which of the following methods of protection against electric shock are permitted?

c) Earth-free local equipotential bonding

18th edition complete mock 5

Authored by Gareth Wyatt

Other

Professional Development

Used 6+ times

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60 questions

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MULTIPLE CHOICE QUESTION

2 mins • 1 pt

Which standard, for the selection of electrical equipment, cannot be used?

a) To BS EN

b) To IEC

c) To BS

d) To your own standard

MULTIPLE CHOICE QUESTION

2 mins • 1 pt

What characteristic of the supply is not required to be included in documentation that should accompany an electrical installation certificate in commercial premises?

a) The circuits insulation resistance value

b) The nominal frequency

c) The prospective short-circuit current

d) The nominal voltage

MULTIPLE CHOICE QUESTION

2 mins • 1 pt

In electrical installations, where the protection of safety is paramount the risk of injury may result from?

a) Ignition of a potentially explosive atmosphere

b) The apprentice leaving live wires exposed

c) The incorrect equipment being used

d) Non-skilled persons working on electrical equipment

MULTIPLE CHOICE QUESTION

2 mins • 1 pt

BS 7671 is NOT intended to provide safety from electric shock, which may result from?

a) Interruptions of supply in an operating theatre

b) Unauthorized access to railway signaling equipment

c) Interruptions of electrical supply at a travelling fair

d) Shock currents on a marina

MULTIPLE CHOICE QUESTION

2 mins • 1 pt

Band II voltages do not exceed

a) 2500 v de

b) 1700 v de

c) 1000 v ac r.m.s

d) 1600 v ac r.m.s

MULTIPLE CHOICE QUESTION

2 mins • 1 pt

What is the correct name for a protective conductor that provides equipotential bonding?

a) Bonding conductor

b) Earth conductor

c) Earthing conductor

d) Supplementary equipotential bonding conductor

MULTIPLE CHOICE QUESTION

2 mins • 1 pt

Installations are divide into circuits for a given reason, which option below is not a Iisted reason?

a) Safe Inspection

b) Testing

c) Maintenance

d) To reduce the current in multiple cables

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