Test Quiz ECS Card – Electrotechnical

by Cătălin · 31 octombrie 2018

You should have an understanding of:
• The effects of electric current on the body
• The types of socket outlets used on construction sites
• The need for persons working on electrical systems to be competent to do so
• The use of residual current devices for additional protection against electric shock
• Safe isolation procedures when working on electrical systems and equipment
• Only working ‘live’ in exceptional circumstances
• Safe working with optical fibres

ELECTROTECHNICAL

In accordance with the Electricity at Work regulations, when considering whether to work live a responsible person should:

carry out a risk assessment

only work dead

only work live

do as the client demands

Correct! Wrong!

The normal procedure for working on electrical equipment should be which one of the following?

Dead working

Wearing insulated gloves

Using insulated tools

Live working

Correct! Wrong!

Test instruments used for working on electrical systems should:

be yellow in colour

be less than 10 years old

have non-insulated test probes

have insulated test probes

Correct! Wrong!

Under the Electricity at Work Regulations, live working is considered:

as entirely acceptable

to be normally permitted

only to be allowed in exceptional circumstances

never to be allowed

Correct! Wrong!

Which of the following would you use to replace the fuse in a plug if fuses were NOT available?

A nail

A piece of silver paper

A bit of wire

None of the options listed

Correct! Wrong!

To prove a circuit or equipment is dead after isolation what is the FIRST activity in the sequence of events?

Make sure equipment is not working

Check between line and earth

Check that the voltage detector is working on a proving device, known live source or inbuilt test feature

Check between line and neutral

Correct! Wrong!

The nominal single phase voltage in the UK is?

230 volts

240 volts

415 volts

400 volts

Correct! Wrong!

When is live working permissible?

When the person carrying out the work is a competent person

When it is unreasonable in all circumstances for the equipment to be made dead and suitable precautions are taken

When the means of isolation cannot be identified

When the person working on the equipment is wearing rubber gloves

Correct! Wrong!

Which of the following is not a requirement of low voltage safe isolation practice?

Ensuring that the correct point of isolation is identified

The person carrying out the work is issued with insulating gloves

A caution notice should be applied at the point of isolation

The conductors are proved to be dead at the point of work

Correct! Wrong!

The specific effects on the human body of a major electric shock are one of the following:

dermatitis

burns and cardiac arrest

broken bones

chest pains

Correct! Wrong!

The lowest level of electrical current which can harm the human body is normally measured in:

microamps

kiloamps

amps

milliamps

Correct! Wrong!

With regard to the effect of electrical current on the human body, one of the following is correct:

a 6 amp circuit breaker should prevent a person receiving a fatal electric shock

a 3 amp fuse should prevent a person receiving a fatal electric shock

a 30mA Residual Current Device (RCD) should prevent a person receiving a fatal electric shock.

a 5 amp rewireable fuse should prevent a person receiving a fatal electric shock

Correct! Wrong!

Where mains voltage is used to supply portable equipment on a construction site, what additional protection is required?

Step-down transformer

Step-down generator

Cable avoidance tool

Residual current device (RCD)

Correct! Wrong!

What colour cable USUALLY signifies 110 volt power supply on site?

Black

Red

Blue

Yellow

Correct! Wrong!

A portable electric generator on site has two power outlets, 110 volts and 230 volts. What colour would the 110 volt outlet be?

Black

Yellow

Red

Blue

Correct! Wrong!

Where there is no local means of isolation for equipment or circuits to be worked on, which of the following is the preferred method of isolation?

Isolation of the main switch or DB switchdisconnector

Isolation of the individual circuit breaker or fuse

Pulling out the distributor’s cut-out fuse

Disconnecting the individual circuit from the DB

Correct! Wrong!

What action should you take if a workmate gets an electric shock?

Phone the electricity board immediately

Dial 999 and ask for the fire brigade

Cut off the power and call for help

Try to pull them to safety

Correct! Wrong!

A residual current device is designed to operate in the event of one of the following:

overload

earth fault

lightning strike on the supply

short-circuit

Correct! Wrong!

Electrical installations on construction sites should be periodically inspected and tested:

every 3 months

every year

every 6 months

every month

Correct! Wrong!

The maximum AC voltage which the human body can withstand without long term physiological effects in dry conditions is:

110 volts

230 volts

50 volts

400 volts

Correct! Wrong!

Which of the following statements is true with regard to the dangers of electricity?

Electricity is perfectly safe so long as you wear cotton gloves

Electricity is only dangerous if you are not wearing wellington boots

Electricity is only dangerous in wet weather

Electricity is dangerous at any time because you cannot tell by looking at a cable whether or not it is live

Correct! Wrong!

What is the most serious effect that electric shock can have if you come into contact with a live part?

The electric current can cause a slight tingling in the fingers

The electric current can cause burn marks on the fingers

The electric current can cause the heart to stop, resulting in death

The electric current can cause the finger muscles to twitch

Correct! Wrong!

Your job involves you working near to hanging electrical cables which have bare ends. What should you do?

Touch the cables to see if they are live

Carry on working, as there shouldn’t be a problem

Inform your supervisor and keep well away

Attempt to push the cables back into the ceiling void so that you can start work

Correct! Wrong!

For all live working activities it is necessary to:

carry out a risk assessment as required by the EAW Regulations.

wear rubber gloves only

be accompanied

keep your fingers crossed

Correct! Wrong!

An electrical Permit to Work is primarily a statement that:

someone else has taken responsibility for the work

the circuit or equipment is live

certain instructions need to be followed

the circuit or equipment has been isolated and is safe to work on

Correct! Wrong!

The probes of voltage detectors and test instruments used on electrical systems should be:

manufactured in the UK

accompanied by a calibration certificate

shaped or have barriers to prevent finger contact with the tips

coloured red

Correct! Wrong!

Which of the following does the Electricity at Work (EAW) regulations apply to?

All persons engaged for work purposes

Self employed persons only

Employees only

Employers only

Correct! Wrong!

The Electricity at Work Regulations require that:

persons working with electricity must have the appropriate level of knowledge and experience

a training course is necessary before anyone can work with electricity

only electricians can work with electricity

anyone supervised can work with electricity

Correct! Wrong!

The Electricity at Work Regulations apply to:

only low voltage systems

only extra-low voltage systems

all voltage systems

only high voltage systems

Correct! Wrong!

Which of the following should be used to prove a circuit or equipment is dead after isolation?

A lamp holder with a length of flex attached

A proprietary test lamp or two-pole voltage detector

A voltage stick

A multimeter

Correct! Wrong!

Which of the following is not a suitable means of isolating a circuit?

Removing a fuse and locking the distribution board

Putting insulating tape over the circuit breaker

Padlocking the isolating switch

Fitting a padlocked circuit breaker lockout

Correct! Wrong!

Which of the following work procedures on electrical systems will always require a permit-to-work to be issued?

Dead working on low-voltage systems

Live working on low-voltage systems

Dead working on high-voltage systems

Live working on high-voltage systems

Correct! Wrong!

Optical fibre cable remnants should not be left lying around on site because:

They can be hot and burn upon contact

Laser beams still exist in the cut pieces

They can pierce the skin or eyes

They are toxic

Correct! Wrong!

Why should the end of an optical fibre cable never be pointed towards your own or anyone else’s eyes?

The beam can transfer a strong electric current

The colour of the beam is very hypnotic

The beam can bore a hole through the skin

The beam can damage the eyes

Correct! Wrong!

The use of a multi-lock hasp with the appropriate number of padlocks is a recommended method of safe isolation where:

Individual circuit breaker locking off devices are not available

Individual circuit breakers are not identified at the distribution board

More than one person will be working on circuits supplied from the same distribution board

You know the health and safety inspector is in the area

Correct! Wrong!

Which of the following procedures should be used when more than one person will be working on circuits supplied from a distribution board which has been switched off?

The use of a multi-lock hasp on the isolator with a padlock for each operative

Blowing a horn before the power is switched on again

Giving each operative a volt stick

Telling everyone what time the power will be switched on again

Correct! Wrong!

Test Quiz ECS Card – Electrotechnical

In accordance with the Electricity at Work regulations, when considering whether to work live a responsible person should:

The normal procedure for working on electrical equipment should be which one of the following?

Test instruments used for working on electrical systems should:

Under the Electricity at Work Regulations, live working is considered:

Which of the following would you use to replace the fuse in a plug if fuses were NOT available?

To prove a circuit or equipment is dead after isolation what is the FIRST activity in the sequence of events?

The nominal single phase voltage in the UK is?

When is live working permissible?

Which of the following is not a requirement of low voltage safe isolation practice?

The specific effects on the human body of a major electric shock are one of the following:

The lowest level of electrical current which can harm the human body is normally measured in:

With regard to the effect of electrical current on the human body, one of the following is correct:

Where mains voltage is used to supply portable equipment on a construction site, what additional protection is required?

What colour cable USUALLY signifies 110 volt power supply on site?

A portable electric generator on site has two power outlets, 110 volts and 230 volts. What colour would the 110 volt outlet be?

Where there is no local means of isolation for equipment or circuits to be worked on, which of the following is the preferred method of isolation?

What action should you take if a workmate gets an electric shock?

A residual current device is designed to operate in the event of one of the following:

Electrical installations on construction sites should be periodically inspected and tested:

The maximum AC voltage which the human body can withstand without long term physiological effects in dry conditions is:

Which of the following statements is true with regard to the dangers of electricity?

What is the most serious effect that electric shock can have if you come into contact with a live part?

Your job involves you working near to hanging electrical cables which have bare ends. What should you do?

For all live working activities it is necessary to:

An electrical Permit to Work is primarily a statement that:

The probes of voltage detectors and test instruments used on electrical systems should be:

Which of the following does the Electricity at Work (EAW) regulations apply to?

The Electricity at Work Regulations require that:

The Electricity at Work Regulations apply to:

Which of the following should be used to prove a circuit or equipment is dead after isolation?

Which of the following is not a suitable means of isolating a circuit?

Which of the following work procedures on electrical systems will always require a permit-to-work to be issued?

Optical fibre cable remnants should not be left lying around on site because:

Why should the end of an optical fibre cable never be pointed towards your own or anyone else’s eyes?

The use of a multi-lock hasp with the appropriate number of padlocks is a recommended method of safe isolation where:

Which of the following procedures should be used when more than one person will be working on circuits supplied from a distribution board which has been switched off?

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