ECS - Electrotechnical 5.0 / 5 based on 1 rating ? AllElectricalsAll LevelsAll boards Created by: jayboylanCreated on: 01-12-19 15:54 In accordance with the Electricity at Work regulations, when considering whether to work live a responsible person should... A - Carry out a risk assessment 1 of 26 Test instruments used for working on electrical systems should... D - Have insulated test probes 2 of 26 Under the Electricity at Work Regulations, live working is considered: C - Only to be allowed in exceptional circumstances 3 of 26 To prove a circuit or equipment is dead after isolation what is the FIRST activity in the sequence of events? C - Check that the voltage detector is working on a proving device, known live source or in-built test feature 4 of 26 The nominal single phase voltage in the UK is? A - 230 volts 5 of 26 When is live working permissable? B - When it is unreasonable in all circumstances for the equipment to be made dead and suitable precautions are taken 6 of 26 The specific effects on the human body of a major electric shock are one of the following... B - Burns and cardiac arrect 7 of 26 The lowest level of electrical current which can harm the human body is normally measured in... D - Milliamps 8 of 26 With regard to the effect electrical current on the human body, one of the following is correct... C - a 30mA Residual Current Device (RCD) should prevent a person receiving a fatal electric shock. 9 of 26 Where mains voltage is used to supply portable equipment on a construction site, what additional protection is required? D - Residual current device (RCD) 10 of 26 What colour cable USUALLY signifies 100 volts power supply on site? D - Yellow 11 of 26 A portable electric generator on site has two power outlets, 110 volts and 230 volts. What colour would the 110 volt outlet be? B - Yellow 12 of 26 What action should you take if a workmate gets an electric shock? C - Cut off the power and call for help 13 of 26 A residual current device is designed to operate in the event of one of the following... B - Earth fault 14 of 26 Electrical installations on construction sites should be periodically inspected and tested... A - Every 3 months 15 of 26 The maximum AC voltage which the human body can withstand without long term physiological effects in dry conditions is... C - 50 volts 16 of 26 What is the most serious effect that electric shock can have if you come into contact with a live part? C - The electric current can cause the heart to stop, resulting in death 17 of 26 Your job involves you working near to hanging electrical cables which have bare ends. What should you do? C - Inform your supervisor and keep well away 18 of 26 For all live working activities it is necessary to... A - Carry out a risk assessment as required by the EAW Regulations 19 of 26 An electrical Permit to Work is primarily a statement that.... D - The circuit or equipment has been isolated and is safe to work on 20 of 26 The probes of voltage detectors and test instruments used on electrical systems should be... C - Shaped or have barriers to prevent finer contact with the tips 21 of 26 The EAW Regulations require that... A - Persons working with electricity must have the appropriate level of knowledge and experience 22 of 26 The EAW Regulations apply to... C - All voltage systems 23 of 26 Optical fibre cable remnants should not be left lying around on site because... C - They can pierce the skin or eyes 24 of 26 Why should the end of an optical fibre cable never be pointed towards your own or anyone else's eyes? D - The beam can damage the eyes 25 of 26 The use of a multi-lock hasp with the appropriate number of padlocks is a recommended method of safe isolation where... C - More than one person will be working on circuits supplied from the same distribution board 26 of 26
Comments
No comments have yet been made