Phase 6 science exam papers

arse..biscuits

2011 wrote: »

In what exam, phase 6 electrical science?
Have you a link to this?

I served my time in the early nineties.
This certainly was not the way that our trade exams were marked.
I am open to correction on this but I would be very surprised if marking systems have changed so radically.
You stated that you teach in DIT (apprentices I assume?) so I acknowledge that you would have a better insight into this than me.

To clarify:
Are you suggesting that if a someone makes a mathematical error but is 100% correct with everything else that they get a 1 or a 0?

Many thanks.

I don't have any link but I have been involved in teaching apprentices for almost 10 years and I have corrected many exams. The mark for each question is 1 or 0.
However, generally half marks can be given and added so all the marks are still 1 or 0.
I didn't invent the marking system nor do I agree with it.

2011

arse..biscuits wrote: »

I don't have any link but I have been involved in teaching apprentices for almost 10 years and I have corrected many exams. The mark for each question is 1 or 0.
However, generally half marks can be given and added so all the marks are still 1 or 0.
I didn't invent the marking system nor do I agree with it.

Fair enough.
You have an insight that I don't, so I have no doubt that what you are saying is correct.

Can you explain the structure of the exam paper?
How many questions are not he paper?
How many does the student have to do?
Is it just a 1 or 0 per question?

So if someone makes a basic mathematical error but is otherwise correct in terms of method etc. what marks do they get awarded for that question?

My apprenticeship was very different, the entire structure has changed.
We had a junior trades exam and a senior trades, I understand that this has been replaced by 7 phases. That would explain the different marking system, exams, syllabus etc.

arse..biscuits

2011 wrote: »

Fair enough.
You have an insight that I don't, so I have no doubt that what you are saying is correct.

Can you explain the structure of the exam paper?
How many questions are not he paper?
How many does the student have to do?
Is it just a 1 or 0 per question?

So if someone makes a basic mathematical error but is otherwise correct in terms of method etc. what marks do they get awarded for that question?

My apprenticeship was very different, the entire structure has changed.
We had a junior trades exam and a senior trades, I understand that this has been replaced by 7 phases. That would explain the different marking system, exams, syllabus etc.

There are four exams in both phase 4 and phase 6. Two of the four (Electrical Science & Craft Theory) are 20 questions, 14 correct to pass. The other exams are more practical.

For a single error in a question, they might get a half mark, it's difficult to say as its up to the person marking the paper. If its the difference between a pass and a fail, most would give a full mark.

2011

Thanks for the clarification.

phase6spark

Hows it going Im an apprentice electrician currently in phase 6 and im just wondering is there any chance you would have some exam papers to give me, particularly craft theory and science papers as our lecturer will not give us any form of past exam questions. I would greatly appreciate your help,

Thanks a lot,

Apprentice.

kingden2006

does anybody know where i could get some grinds on phase 6 t3 written exam,i know its only early days,week 5 but would like to be on top of this for the exam,mainly the instruction list....
i have phase 6 past papers if you want to pm me your e-mail address ill forward them to you no problem...
any help is much appreciated.thanks lads

arse..biscuits

kingden2006 wrote: »

does anybody know where i could get some grinds on phase 6 t3 written exam,i know its only early days,week 5 but would like to be on top of this for the exam,mainly the instruction list....
i have phase 6 past papers if you want to pm me your e-mail address ill forward them to you no problem...
any help is much appreciated.thanks lads

If you were in Dublin I could help you. I know another lecturer who lives in Leitrim who is quite good too.

kingden2006

yes arse biscuits that would be brilliant just a few hours a week would help..thanks if you could pm me i"d be very grateful..
thanks again.

arse..biscuits

PM sent

kingden2006

hi lads can anyone answer these?

A.for a 50hz induction motor,explain how rotor-induced emf is affected by rotor slip and determine the value of the rotor-induced emf when the rotor emf at standstill is 140 volts and the rotor slip is 3.5%?

B.describe what measures are taken to dissipate the energy stored in a relay coil which is switched by a transistor?

C.Explain how the speed of a shunt motor is varied using a field regulator?

D.Explain the principle of operation of a solid state variable frequency motor drive and Explain how it may be used for variable speed control of AC motors?


i know its a few lads but even if anyone could answer 1 question it"s all a help there the only ones i"m really stuck on,everything else is grand..

thanks lads and i mean it any help is much appreciated..

bassey

B. Flywheel diode in parallel with relay coil

C. Decrease resistance in field winding, speed goes up. Increase resistance in field winding, speed goes down.

D. VSD question, AC supply is rectified to DC, DC is inverted back to AC with Pulse Width Modulation (PWM) and speed is controlled.

They're pretty basic answers and they'd need to be beefed up a bit

2011

kingden2006 wrote: »

hi lads can anyone answer these?

A.for a 50hz induction motor,explain how rotor-induced emf is affected by rotor slip and determine the value of the rotor-induced emf when the rotor emf at standstill is 140 volts and the rotor slip is 3.5%?

The induced rotor emf is proportional to the slip.
No slip = no induced emf.
So if the motor is at standstill is 100% slip and the induce emf = 140 then when the slip is 3.5% ............

B.describe what measures are taken to dissipate the energy stored in a relay coil which is switched by a transistor?

Google flyback diode and snubber circuit.

C.Explain how the speed of a shunt motor is varied using a field regulator?

Can't remember off the top of my head.

D.Explain the principle of operation of a solid state variable frequency motor drive and Explain how it may be used for variable speed control of AC motors?

Normally called VSD's nowadays.
Basically they rectify 50Hz AC (generally 3 phase) to DC and by using PWM (Pulse Width Modulation) convert the DC back to AC.
This is achieved by "firing" solid state switches.
The trick is that the frequency of output and therefore the speed of the motor it is feeding can be varied to suit the application.




This link is quite helpful.

kmurphy94

Does anybody have phase 6 electrical exam papers?

darrenmonaghan

Wel would any one have phase 6 electrical science or craft practice past exam paper would be great if anyone has

darrenmonaghan

superg wrote: »

PM me your email address

Any have phase 6 exam papers for electrical science or craft practice

Paul_Mc1988

darrenmonaghan wrote: »

Any have phase 6 exam papers for electrical science or craft practice

Where are you based.... The thesis center on Camden street have the whole bank of questions for the old syllabus and new syllabus. Just go in and ask for the Phase 6 science an Phase six craft booklets think it was around a tenner for each back in 2011

apt111d1

hi does anyone have any idea what t3 exam is coming up this December? The ones in march and june this year were about 2 motors pumping water. Does anyone have the papers for the last 3 years or know which ones can up in the kast 3 years so I can narrow it down.

arse..biscuits

apt111d1 wrote: »

hi does anyone have any idea what t3 exam is coming up this December? The ones in march and june this year were about 2 motors pumping water. Does anyone have the papers for the last 3 years or know which ones can up in the kast 3 years so I can narrow it down.

I don't think anyone knows what's coming up.
If you know how to convert from the circuit to ladder diagram, then it doesn't matter what's coming up.

apt111d1

arse..biscuits wrote: »

I don't think anyone knows what's coming up.
If you know how to convert from the circuit to ladder diagram, then it doesn't matter what's coming up.

Does anyone know how to transpose this formula in simple steps?
v= e+Ia.Ra look for Ia on its own

2011

apt111d1 wrote: »

Does anyone know how to transpose this formula in simple steps?
v= e+Ia.Ra look for Ia on its own

Add -e to both sides.
Write down the answer.
Next devide both sides by ??

Give it a go and let us know how you get on.

arse..biscuits

apt111d1 wrote: »

Does anyone know how to transpose this formula in simple steps?
v= e+Ia.Ra look for Ia on its own

You are looking to calculate armature current.

Using ohm's law, current = voltage / resistance

The voltage pushing the current is the supply voltage minus the back emf.
The resistance the the armature resistance.

You can transpose the formula, or just think of it as simple ohm's law.

aido79

apt111d1 wrote: »

Does anyone know how to transpose this formula in simple steps?
v= e+Ia.Ra look for Ia on its own

Best way to transpose formulae is to try to understand how it works not to try to remember the exact transposition for each formula. If you do something to one side of the equation then you do the same to the other side.

steven electricain

im in 6th phase and im looking for elec science papers and solutions and the formula booklet from 08 onwards if anyone can help me that would be great..

solargain

The solutions as you call them can be wrong. Be careful if you are operating like that.

JohnG23

hi, I am also looking for some recent papers for phase 6. If anyone can help out, it would be appreciated.
Also, if anyone has some decent notes or links to any relevant sites for Phase 6 specific material relating to PLC's that they could forward, I would be very grateful. Cheers

crasy dash

Cant help you with papers but plc's should be able to help you out:)

What exactly are you trying to figure out is it the ladder logic side, inputting it to the plc or is it from scratch wiring a project from start in the lab?http://www.plcsystems.ru/catalog/Mitsubishi/doc/FX1S%20FX1N%20FX2N%28C%29%20FX3U%20Beginner%27s%20Manual.pdf

When i was i phase 6 it was mitsubishi plc's we used have a look at the pdf in the link above it should help you,if your confused feel free to pm myself or post a question everybody on here will help you

JohnG23

Thanks for the reply and the link crasy_dash. I will have a look through it. Its the ladder logic and drawing circuit diagrams from the ladder logic that I am having trouble with. The notes that I have are not helping and I feel that I need to start from scratch on this. Having trawled through a lot of websites and youtube tutorials, I am not making progress with regards to the Phase 6 Electrical Science exam. Thanks again

crasy dash

How long are you into the course where are you on block release when are the exams coming up?

With this exam it really is about the basics starting from scratch and really understanding it is what i mean .

Do not get bogged down looking at pages and pages of notes you will gain nothing from it

Begin right at the start and understand the process involved and the end result you are looking for.

Are you ok with labelling inputs outputs etc?In the workshop can you wire it up etc or are you confused with that also.

The more info you give us will help us help you

Fire away with them in this thread or pm me if you prefer ill try and help you get through this.
The best time to pass this is now so dont give up its very doable you wouldnt have got to phase 6 if you werent capable:)

arse..biscuits

JohnG23 wrote: »

Thanks for the reply and the link crasy_dash. I will have a look through it. Its the ladder logic and drawing circuit diagrams from the ladder logic that I am having trouble with. The notes that I have are not helping and I feel that I need to start from scratch on this. Having trawled through a lot of websites and youtube tutorials, I am not making progress with regards to the Phase 6 Electrical Science exam. Thanks again

Where are you based?
I'm in Dublin and could teach you everything you need to know in an hour.

JohnG23

A repeat exam in two weeks, have organised more grinds over the next weeks. Just need to get back over the fundamentals of PLCs before grinds as its not clicking.
Bit late in the day, I know, but pretty good with all other topics so might get through. I will post or pm some relevant questions later.

Based in Limerick, thanks for the offer arse..biscuits. I will see how these grinds go and might take you up on the offer if its not working out.

Cheers.