mock exam level 3 1st paper

State three documents that should be available to a site electrician during the construction phase of an electrical installation.(3 marks)

Evaluate responses using AI:

OFF

State three types of inductive transformer(3 marks)

Evaluate responses using AI:

OFF

Explain why pumped storage electricity generation is used, in preference to traditional fuel sources, to provide supply flexibility when demand fluctuates.(3 marks)

Evaluate responses using AI:

OFF

A single-phase electric motor has a rating of 2.55 kW and the current lags the voltage by 32°. Calculate the apparent power and reactive power for this motor.(5 marks)

Evaluate responses using AI:

OFF

Explain why all Live conductors of the same A.C. circuit must enter a steel-cased consumer unit through one single hole.(4 marks)

Evaluate responses using AI:

OFF

State three gases or metallic vapors commonly used in discharge lamps.(3 marks)

Evaluate responses using AI:

OFF

Explain why star-delta motor control equipment is used in preference to direct-on-line(3 marks)

Evaluate responses using AI:

OFF

Explain the drawbacks of BS 3036 fuses.(6 marks)

Evaluate responses using AI:

OFF

State three factors, given in BS 7671, to be taken into account when calculating the maximum demand of an installation.(3 marks

Evaluate responses using AI:

OFF

A new passive infra-red occupancy sensor has been installed to control the lighting in a hotel corridor. Describe the process of carrying out functional testing of these sensors.(3 marks)

Evaluate responses using AI:

OFF