18th edition part 3 mock 3

Installations are divide into circuits for a given reason, which option below is a listed reason?

• a)        To reduce the installation time
• b)        To allow the electrician to charge more for their work
• c)         To allow the electrician to charge less for their work
• d)        To prevent the indirect energizing of a circuit intended to be isolated

When it is required to make a general assessment of characteristics of an electrical installation, which of the following options must be considered?

• a)        The basic protection applied
• b)        The compatibility of the equipment
• c)        The fault protection included
• d)        Functional switching

When assessing the continuity of service of an emergency escape lighting system, which of the following should be considered?

• a)        Initial starting current
• b)        Maximum overload current
• c)         Number of cables
• d)         Number of circuits

Where it is required to install a supply for a standby system, how shall the system be assessed?

• a)              By the designer
• b)              By the electrician
• c)              Separately assessed
• d)             Generally assessed

In an earthing system, 'the direct electrical connection of the exposed­ conductive-parts to the earthed point of the power system' is denoted by the letter?

• a)           T
• b)       N
• c)            S
• d)            C

When inspecting an installation with reference to the general characteristics of the supply, which of the following must be considered?

• a)       Supplementary equipotential bonding
• b)       The requirements for SELV
• c)        The insulation resistance of floors and walls
• d)       The suitability for the requirements of the installation

Which of the following is an example of an electrical safety service?

• a)       Emergency escape lighting
• b)        Protection against safety overloads
• c)        Protection against safety overheating
• d)       Emergency safety backup generators connected to the public supply

Which of these needs to be taken into account, with regards to maintainability?

• a)       The tools the electrician uses
• b)       The type of cables used
• c)         Quality of maintenance
• d)       The equipment manufactures recommendations

When it is required to make a general assessment of characteristics of an electrical installation, which of the following options must be considered?

• a)       The undervoltage that may be occur
• b)       The overvoltage that may be present
• c)        The number of RCD's installed
• d)       Its maintainability

Which of these is not a recognised safety service source?

• a)       Storage battery
• b)       Independent generator set
• c)        Separate independent supply feeder
• d)       Secondary feed from a local substation