18th Edition appendices mock 2

Who is the principal person responsible for 'Cinematograph installations' in England?

• a)       The prime minister
• b)       The home secretary
• c)       The arts secretary
• d)       The secretary of state for the home department

Which form shall be used for a periodic inspection of an electrical installation?

• a)        Minor electrical installation works certificate
• b)       Electrical installation certificate
• c)        Electrical installation condition report
• d)       A schedule of periodic inspection report

What is the minimum allowable voltage for a domestic 230 volt lighting circuit supplied from the public low voltage distribution system?

• a)        220.6 volts
• b)        221.5 volts
• c)        223.1 volts
• d)        225.9 volts

What does the external influence code AM-22-1 refer to?

• a)        Negligible level transient
• b)       Medium level transient
• c)        High level transient
• d)        Very high level transient

With reference to energy efficiency system, it is understood that in industry 60°/o of consumed electricity is used?

• a)     To turn electric motors
• b)     To power lighting systems
• c)      To power pumps and fans
• d)     To power heating systems

A 90°C thermosetting cable is operating in the ground where the ambient ground temperature is 15°C. What is the ambient temperature cable correction factor Ca?

• a) 1.10
• b) 1.04
• c) 1.05
• d) 1.07

What is the highest rating Type D circuit breaker to BS EN 60898 that will trip in 0.4 seconds when an overcurrent occurs of 640 amps?

• a)        20 A
• b)           25 A
• c)             32 A
• d)            40 A

With reference to protected-type non-reversible plugs, socket-outlets, cable­ couplers and appliance couplers, which standard has been withdrawn?

• a) BS 3036:1958
• b) BS 646:1958
• c) BS 6351
• d) BS 196:1961

Cable colour identification changed to the harmonized standard with the introduction of standard HD 308 S2:2001, which types of flexible cables to BS 6500 did not change their colour to the harmonized standards?

• a)       Two and three core
• b)        Four and five core
• c)        Five and six core
• d)       Six and seven core

A d.c. circuit 25 m in length is installed using two-core 4 mm2 70°C thermoplastic insulated cable. The load draws 10 Amps when using a supply voltage of 245 volts d.c. What will the voltage drop be in the cable?

• a)       1.25 volts
• b)        2.75 volts
• c)        3.25 volts
• d)        4.50 volts