203 help

[Mikeymike]

Hey all,

Got my 203 soon and I did a past paper recently and will someone be kind enouth to correct me if am right or wrong please my answers at the bottom. cheers

1: In situ measurements can be taken

a: OFF the installation drawings - my answer

b: OFF the finished drawings

c: From the tender drawings

d: Measuring quantites onsite

2: Which of the following does an RCD not protect against?

a: Earth to line faults

b: Earth to neutral faults

c: Line to neutral faults - my answer

d: Line to earth faults

3: From the on-site guide the maximum external earth loop impedance for a TT system is

a: 0.8ohms

b: 21ohms

c: 0.65ohms - my answer

d: 0.35ohms

4: a low earth fault loop impedance path is necessary for

a: Maintaining the neutral at earth potential

b: Small circuit condutors to be used at the design stage

c: MCB's to operate within specified disconnection times

d: RCD's to operate within specified disconnection times - my answer

5: The most effective medthod of controlling is to

a: The use of PPE

b: Use guards or barriers

c: Using enclosures

d: Eliminate the hazard - my answer

6: A fluorescent luminaire is also known as

a: High pressure luminaire metal halide

b: High pressure vapour

c: Low pressure mercury vapour - my answer

d: low pressure sodium

7: Why is it necessary to maintain a record of materials delivered to site?

a: To monitor and record staff efficiency

b: Check materials used and maintain stock - my answer

c: Purposes of billing the client for work done

d: confirm the cost of the installation on completion

8: One reason to balance 3 phase, 4 wire installation is to?

a: Have a connection for the neutral - my answer

b: Ensure you do not receive a shock from the earth potential

c: Allow single phase loads to be connected

d: Keep the running costs to a minimum

9: Losses from the theft of tools and materials can be most effectively reduced by

a: Placing barbed wire around the perimeter of the construction site

b: Using a suitable lockable container for storage - my answer

c: Using a CCTV on unguarded equipment

d: putting a lock on the main gate

10: The primary fuction of the National Grid is

a: The transmission of power between generating stations

b: allowing generating stations to determine the allotted power demands

c: Re distribution of power from the sub-station to consumer - my answer

d: The transmission of power between generating stations and distribution points

11: Any left over waste materials must

a: Be stored in suitable containers off site

b: Be the responsibility of the main contractor to remove

c: Be disposed of into the nearest skip

d: Be stored in the site container - my answer

12: How many number of turns are needed on a transformer if the primary windings are 1000 and the primary current is 5A and secondary current is 20A

a: 2500 turns

b: 250 turns - my answer

c: 200 turns

d: 150 turns

13: The five main stages of the risk assessment procedure are

1 Identify

2 Evaluate

3 Record

4 Implement

5 Review

The order in which they should be carried out is

a: 1,2,3,4,5 - my answer

b: 2,1,4,3,5

c: 1,3,2,4,5

d: 2,3,1,4,5

14: The risk of electric shock can be most effectively reduced by

a: Using a SELV supply - my answer

b: Using a 400v dc supply

c: Using a 230v ac supply

d: Using a 100v ac supply

15: The minimisint of risks in the workplace can best be achieved by

a: Periodically reviewing risk assessments - my answer

b: Ensuring all staff purchase their own PPE

c: Testing of electrical equipment every 3 months

d: Recording all movements of site personnel within the construction site

 

[redman]

These would be my answers :

1 -D

2 -C

3 - B

4 - D

5 - controlling what ?

6 - C

7 - B

8 - D

9 - B

10 -D

11 - D

12 - B

13 - A

14 - A

15 - A

 

[NozSpark]

Hey all,Got my 203 soon and I did a past paper recently and will someone be kind enouth to correct me if am right or wrong please my answers at the bottom. cheers

1: In situ measurements can be taken

a: OFF the installation drawings - my answer

b: OFF the finished drawings

c: From the tender drawings

d: Measuring quantites onsiteThe question asks for in-situ measurements

2: Which of the following does an RCD not protect against?

a: Earth to line faults

b: Earth to neutral faults

c: Line to neutral faults - my answerQuite correct

d: Line to earth faults

3: From the on-site guide the maximum external earth loop impedance for a TT system is

a: 0.8ohms

b: 21ohmsI think they are after this,,, it's the maximum earth loop for a substation!?!?

c: 0.65ohms - my answer

d: 0.35ohms

4: a low earth fault loop impedance path is necessary for

a: Maintaining the neutral at earth potential

b: Small circuit condutors to be used at the design stage

c: MCB's to operate within specified disconnection timesyou need a low earth loop for the magnetic part of the MCB to operate

d: RCD's to operate within specified disconnection times - my answer

5: The most effective medthod of controlling is to controlling what??

a: The use of PPE

b: Use guards or barriers

c: Using enclosures

d: Eliminate the hazard - my answer

6: A fluorescent luminaire is also known as

a: High pressure luminaire metal halide

b: High pressure vapour

c: Low pressure mercury vapour - my answerYep

d: low pressure sodium

7: Why is it necessary to maintain a record of materials delivered to site?

a: To monitor and record staff efficiency

b: Check materials used and maintain stock - my answerthis is what I'd go for

c: Purposes of billing the client for work done

d: confirm the cost of the installation on completion

8: One reason to balance 3 phase, 4 wire installation is to?

a: Have a connection for the neutral - my answer

b: Ensure you do not receive a shock from the earth potential

c: Allow single phase loads to be connected

d: Keep the running costs to a minimumMy guess

9: Losses from the theft of tools and materials can be most effectively reduced by

a: Placing barbed wire around the perimeter of the construction site

b: Using a suitable lockable container for storage - my answerYep

c: Using a CCTV on unguarded equipment

d: putting a lock on the main gate

10: The primary fuction of the National Grid is

a: The transmission of power between generating stations

b: allowing generating stations to determine the allotted power demands

c: Re distribution of power from the sub-station to consumer - my answer

d: The transmission of power between generating stations and distribution pointsThis one

11: Any left over waste materials must

a: Be stored in suitable containers off site

b: Be the responsibility of the main contractor to removeIt's the responsibility of the company producing the waste to get rid of it

c: Be disposed of into the nearest skip

d: Be stored in the site container - my answer

12: How many number of turns are needed on a transformer if the primary windings are 1000 and the primary current is 5A and secondary current is 20A

a: 2500 turns

b: 250 turns - my answer4:1 ratio

c: 200 turns

d: 150 turns

13: The five main stages of the risk assessment procedure are

1 Identify

2 Evaluate

3 Record

4 Implement

5 Review

The order in which they should be carried out is

a: 1,2,3,4,5 - my answerYes

b: 2,1,4,3,5

c: 1,3,2,4,5

d: 2,3,1,4,5

14: The risk of electric shock can be most effectively reduced by

a: Using a SELV supply - my answerYes

b: Using a 400v dc supply

c: Using a 230v ac supply

d: Using a 100v ac supply

15: The minimisint of risks in the workplace can best be achieved by

a: Periodically reviewing risk assessments - my answerYes

b: Ensuring all staff purchase their own PPE

c: Testing of electrical equipment every 3 months

d: Recording all movements of site personnel within the construction site

Not having done this exam or course,, mine in RED

 

[Mikeymike]

Cheers for the answer I've got few more if you wan't have a go

1: The power factor of a resistive & capacitive circuit having an impedance 3ohms and a resistance of 2.5ohms is?

a: 0.83 leading - my answer capacitive leads & inductive lags.

b: 0.63 leading

c: 0.83 lagging

d: 0.63 lagging

2: To many appliances connected to a ring final circuit can cause what kind of fault?

a: Overload - my answer

b: Earth fault

c: Short circuit

d: Visual fault

3: High currents in a supply cables can be most effectively measured by

a: Using an ammeter in series with the supply cable

b: Using a current transformer

c: Connecting an ammeter across the supply terminals - my answer

d: Digital wattmeters

4: A circuit consisting og an induction of 0.12Henrys is connected to a 50hz supply. The inductive reactance is?

a: 37.7Kohms

b: 86.67ohms

c: 37.7ohms - my answer - 2xPI x 50 x 0.12

d: 86.67Kohms

5: Force on a current carrying conductor can be demonstrated by using

a: Fleming's left hand rule - my answer

b: Fleming's left hand grip rule

c: Fleming's right hand grip rule

d: Fleming's right hand rule

6: the correct appearance, knowledge and attitude is necessary to

a: Assist in procuring more finances when the submitting a tender

b: Improve the chances of charging more money for a job

c: Project a professional appearance and improve future contract opportunities - my answer

d: Look good when members of the opposite sex walks past site

7: Which of the following is not classed as an exposed conductive part?

a: A metalclad socket outlet

b: An incoming water supply pipe - my answer

c: The metal casing of a motor

d: A brass dimmer switch

8: If you discovered what you consider to be a serious risk to health whilst at work, what is the best course of action?

a: Attempt to remove the risk

b: Record the risk on a risk assessment

c: Contact your supervisor - my answer

d: Ignore the risk

9: If an electrical circuit supplies equipment outside the equipotential zone

a...

a: BS 1362 fuse must protect the circuit

b: Longer lead must be used

c: MCB must protect the circuit

d: RCD must protect the circuit - my answer

10 - Isolation of an electrical ciruit should be proved

a: Using an approved voltage indicating device - my answer

b: Using an earth fault loop impedance tester

c: Using a multimeter

d: Using a neon screwdriver or glow stick

11: Power factor correction of a large industrial installation can result in

a: Lower energy bills

b: A reduction in the supply voltage

c: An increase in the unit power

d: Higher energy bills - my answer

12: Before work begins, you should carry out a survey highlinging potential hazards within the work area. This is known as a...

a: Risk assessment - my answer

b: Site safert policy

c: Survey of identified risks

d: DSEAR report

 

[NozSpark]

Sorry can't be bothered with calculations.. it's 20+ years since I've had to work out reactance and phase angles

all seem right except for no.3

High supply currents are measured by current transformers!

 

[dannyk]

I just passed my 203.I revised using Swindon massive and smatscreen.While going through the whole unit in The trevor linsley basic level 2 book.

I hope this helps someone

 

[i-lec]

well done mate