18th edition part 1 mock 3

Basic protection is classified as?

• a)        Protection against indirect contact with a live part
• b)        Protection against indirect and direct contact with a live part
• c)        Protection against contact with a live part
• d)        Protection against indirect or direct contact with an isolated part

BS 7671 does NOT provide requirements for electrical safety against the risk of?

• a)        Electrical fires in aircraft wiring systems
• b)       Interruptions of safety services in commercial premises
• c)         Power supply interruptions in veterinary clinics
• d)        Shock current at construction sites

Every electrical installation shall be provided with appropriate?

• a)        Number of socket-outlets
• b)       Isolation points
• c)         Documentation
• d)       Capping

Where an electrical supply system is provided for safety services, what must be determined, that standard systems do not require?

• a)        Loads on the circuit cpc
• b)        Circuits to be supplied by the safety source
• c)        Yearly variation of demand
• d)        Anticipated future demand

Which of the following does 8S7671 apply to?

• a)        Mobile units
• b)       Tugboats
• c)        Airplanes
• d)       Electrical equipment covered by BS EN 60204

In connection with the method of protection by fault protection, which one of the following methods is considered to be one of the important principles for safety?

• a)       Electrical separation
• b)        Application of low voltage circuits
• c)         Protective equipotential bonding
• d)       Use of lOOOmA five second delay RCD's

An interrupting device shall be installed in such a way that it can be?

• a)       Easily adjusted with a tool or key
• b)        Easily recognised
• c)         Not recognisable so no one can tamper with it
• d)       Easily moved if necessary

Which of the following does B57671 apply to?

• a)        Lift installations
• b)        Open cast mines
• c)        Demolition sites
• d)        Lightening protection of buildings

Which of these is not covered by B57671?

• a)             Low voltage generators
• b)            Installations in mines and quarries
• c)              External lighting
• d)            Transportable units

In accordance with statutory regulations the Electricity Safety, Quality and Continuity Regulations 2002 state that the connection with Earth of the neutral supply must be?

• a)       Connected to PME supplies
• b)        Permanent
• c)        Connected at the delta point of the supply transformer
• d)       Connected via a removable impedance