2391-10 Written Exam - 01/12/11

[cr0ft]

Just sat this tonight. What does everyone that sat it tonight think of the paper?

 

[fredrico]

I did the 2391-301 tonight, did not think it was too bad, although i know now that i have cocked up a few questions.

 

[exnavysparks]

same same mate

 

[exnavysparks]

Q1 and Q4?????? you know what i mean lol

 

[fredrico]

cant remember, what were they? I cocked up volt drop, in one of the long questions, i muliplyed ib x z x 1.2. Number 1 and number 4, were they the ones about initial verification?? I put the same answer for both, as i knew at least one of them would be correct.

 

[exnavysparks]

something about initial verification that sounded identical :mad2: oh well haha

 

[exnavysparks]

it was a nightmare mate,i attempted to duplicate my answers, then i did some scribbling out and put something else then i rescribbled some more

 

[exnavysparks]

you came in above 5% then? i winged it at got 11.4 and 4.9% but it took me a while to work it out if im honest. the exam is at a funny time of night?!!

 

[brav]

Same here with the Q1 and 4, tht threw me a bit, then Q5 two things about the supply tht only find out from the supplier, I put frequency and earthing arrangement. section B I screwed up on ze test forgot it was a three phase board duh. Guess i'll be sitting it in Feb then lol

 

[cr0ft]

I got 11.4% as well so just within the allowed volt drop. Seemed far too easy for 8 marks though I have to say.

 

[pfjt]

Should I have halfed the combined resistance for the volt drop , also what should I have put for question 1

 

[pfjt]

I got that answer aswell. But I should I have halfed the combined resistance of the line and neutral

 

[cr0ft]

The impedance (or in this case the resistance) of both conductors must be taken into account when calculating volt drop.

 

[pfjt]

Few I got it right then I think. Just thought that 8 marks for it seemed allot. Did you do the exam

 

[cr0ft]

Yes mate. Thought it was a bit tough at first but when I got home and checked my answers against the books I think I've done ok. Fingers crossed!

 

[pfjt]

I'm not sure how I did q1 and 4 not sure wot I should have put aswell as the live working question. Can u remember q1

 

[cr0ft]

I was unsure about a few of those ones, again more due to it not being very clear what they were asking for.

I think the live working question was something like what considerations must be taken prior to working on or near a live appliance. I put: -

1.) Is the live working really necessary?
2.) Can the equipment/conductor be safely isolated?
3.) Are tools etc insulated to a level suitable for the voltages present.

Can't remember questions 1 to be honest!

Just remember that all 3 of those questions, even if you got them completely wrong are only worth 9 marks. As long as you did ok in section B you are most of the way there already. That's how I see it.

 

[pfjt]

Fair point. And yes the way they ask the questions is like a riddle sometimes

 

[pfjt]

Does any body remember q1 and q4

 

[pfjt]

Q21 when it asked fee the documentation for the completed electrical work did it jus want the elec certificate and schedules and not the periodic aswell