Test
Know electrical safety requirement when working in the building services industry
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Preguntas del test (35)
1The colour and voltage to be used for powertools on a construction sites is?
- ABlue = 400V
- BRed = 230 V
- CYellow = 110 V
- Dd White = 25 V
2The safe use of electricity on site is covered by which Regulation?
- AElectricity at Work Regulations 1988
- BElectricity at Work Regulations 1989
- CElectricity at Work Regulations 1990
- DElectricity at Work Regulations 1991
3Electricity on site is normally at a reduced voltage, which reduced voltage is found on site?
- A24 Volts.
- B110 Volts.
- C400 Volts.
- D230 Volts
4When carrying out electricity site safety on tools, checks are carried out on all of the following except which one?
- ACheck the supply frequency.
- BCheck that RCD protection is provided where necessary.
- CCheck for current PAT labels.
- DPower tools should be double insulated.
5Which of the following is a necessary check before using electrical equipment?
- ACheck the tool is the correct colour
- BCheck the cable is not frayed or damaged
- CEnsure the flex is brown
- DCheck the brand of the tool
6To check a circuit is isolated and safe to work on you must?
- ACheck with a reliable voltage indicator
- BWet your finger and 'flash' test the conductor.
- CCheck it with a home made lamp and flex
- DGet somebody else to check it
7To check a circuit is isolated and safe to work on you should?
- AGet somebody else to check it
- BCheck it with a home made lamp and flex
- CWet your finger and 'flash' test the conductor.
- DCheck with a GS38 voltage indicator
8The ABC of resuscitation stands for?
- AAccident, Bleeding, Causality
- BAirways, Breathing, Circulation
- C Accident, Breathing, Causality
- DAirways, Breaks, Circulation
9The first action you should think of in the event of an electric shock to a colleague is?
- AIsolate the supply.
- BRemove the plug.
- CCheck for your own safety.
- DGet help.
10If the casualty is currently suffering from an electric shock and you can not break the electrical supply by pulling a plug or switching off a supply what would be a good material for breaking the contact between casualty and supply?
- AUse a piece of metal trunking
- BUse a wooden broom handle.
- CUse your bare hands.
- DUse a piece of metal conduit.
11How would it be best to check the casualty's response if they were unconscious?
- APinch them hard on the arm.
- BSlap them hard on the face.
- CTalk to them and gently shake the casualty.
- DAsk somebody else if they knew their name.
12If the casualty was unconscious and lying on the floor what should you check for next?
- ABreathing
- BBleeding.
- CPulse.
- DColour of skin.
13What is the correct immediate treatment for a burn?
- ATreat for shock.
- BFlood the burn with cold water.
- CCheck for pulse.
- DRemove clothing.
14An electrical installation need to be isolated from the supply before carrying out work on the installation in order to prevent
- Adamage to cables and components
- Binterruption of the local supply system
- Cpossible electric shock
- Ddamage to appliances
15The first action to be taken if a person is found lying unconscious on the floor after receiving an electric shock is to:
- Acheck for broken bones
- Btelephone for assistance
- Ccheck for pulse and breathing
- D check for cuts and bleeding
16In accordance with the Electricity at Work regulations, when considering whether to work live a responsible person should:
- Ado as the client demands
- B only work live
- Conly work dead
- Dcarry out a risk assessment
17Test instruments used for working on electrical systems should:
- Ahave insulated test probes
- Bhave non-insulated test probes
- Cbe less than 10 years old
- Dbe yellow in colour
18Under the Electricity at Work Regulations, live working is considered:
- Anever to be allowed
- Bonly to be allowed in exceptional circumstances
- Cto be normally permitted
- Das entirely acceptable
19To prove a circuit or equipment is dead after isolation what is the FIRST activity in the sequence of events?
- ACheck that the voltage detector is working on a proving device, known live source or in-built test feature
- BCheck between line and neutral
- CCheck between line and earth
- DMake sure equipment is not working
20The nominal single phase voltage in the UK is?
- A400 volts
- B415 volts
- C240 volts
- D230 volts
21When is live working permissible?
- AWhen the person carrying out the work is a competent person
- BWhen it is unreasonable in all circumstances for the equipment to be made dead and suitable precautions are taken
- CWhen the means of isolation cannot be identified
- DWhen the person working on the equipment is wearing rubber gloves
22Which of the following is not a requirement of low voltage safe isolation practice?
- AThe conductors are proved to be dead at the point of work
- BEnsuring that the correct point of isolation is identified
- CThe person carrying out the work is issued with insulating gloves
- DA caution notice should be applied at the point of isolation
23The specific effects on the human body of a major electric shock are one of the following:
- Abroken bones
- Bchest pains
- Cburns and cardiac arrest
- Ddermatitis
24The lowest level of electrical current which can harm the human body is normally measured in:
- Amicroamps
- Bkiloamps
- Camps
- Dmilliamps
25Where mains voltage is used to supply portable equipment on a construction site, what additional protection is required?
- ACable avoidance tool
- BResidual current device (RCD)
- CStep-down generator
- DStep-down transformer
26What colour cable USUALLY signifies 110 volt power supply on site?
- AYellow
- BBlue
- CRed
- DBlack
27A portable electric generator on site has two power outlets, 110 volts and 230 volts. What colour would the 110 volt outlet be?
- ARed
- BBlue
- CYellow
- DBlack
28The maximum AC voltage which the human body can withstand without long term physiological effects in dry conditions is:
- A230 volts
- B400 volts
- C50 volts
- D110 volts
29Which of the following statements is true with regard to the dangers of electricity?
- AElectricity is dangerous at any time because you cannot tell by looking at a cable whether or not it is live
- BElectricity is only dangerous in wet weather
- CElectricity is only dangerous if you are not wearing wellington boots
- DElectricity is perfectly safe so long as you wear cotton gloves
30What is the most serious effect that electric shock can have if you come into contact with a live part?
- Aelectric current can cause the finger muscles to twitch
- BThe electric current can cause the heart to stop, resulting in death
- CThe electric current can cause burn marks on the fingers
- DThe electric current can cause a slight tingling in the fingers
31Your job involves you working near to hanging electrical cables which have bare ends. What should you do?
- AAttempt to push the cables back into the ceiling void so that you can start work
- BInform your supervisor and keep well away
- CCarry on working, as there shouldn't be a problem
- DTouch the cables to see if they are live
32For all live working activities it is necessary to:
- Akeep your fingers crossed
- Bbe accompanied
- Cwear rubber gloves only
- Dcarry out a risk assessment as required by the EAW Regulations.
33The probes of voltage detectors and test instruments used on electrical systems should be:
- Acoloured red
- Bshaped or have barriers to prevent finger contact with the tips
- Caccompanied by a calibration certificate
- Dmanufactured in the UK
34which of the following should be used to prove a circuit or equipment is dead after isolation?
- AA voltage stick
- BA multimeter
- CA proprietary test lamp or two-pole voltage detector
- DA lamp holder with a length of flex attached
35What is the recommended maximum voltage for portable hand lamps when working in confined or damp locations?
- A400 volts
- B230 volts
- C110 volts
- D50 volts
Información
- Descripción
- 2 Health and Safety Test sobre Know electrical safety requirement when working in the building services industry, creado por Vito Martino el 30/10/2014.
- Autor
- Vito Martino
- Idioma
- English
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- 576
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