2391 EXAM HELP - BS7671 AMENDMENT 2 - ELECTRICAL INSPECTION AND TEST - EXAM QUESTIONS AND ANSWERS
Вставка
- Опубліковано 17 лис 2023
- In this video from LearnElectrics we will look at the type and style of questions that you might have in a 2391 Inspection and Test exam.
More specifically, we will be looking at the scenario type questions.
Although intended for the Inspection and Test exams, this video is also good practice for other electrical exams, where all learning is good learning.
Scenario type questions will often come up in 2391 style exams and we have set a scenario here, with a range of questions for you to attempt and answer.
Each multi-choice question is also accompanied by the answer and a detailed explanation of why that particular answer was chosen.
By working through these questions, you will improve your understanding of inspection and test, increase your knowledge and improve your confidence in the exam. You will also add to your inspection skills and abilities when on site and testing in the real world.
This is video number 227 and to view all our videos type in LearnElectrics all one word into the UA-cam search bar.
Visit our UA-cam channel where we have many more videos on a wide range of electrical topics.
that was good Dave, more 2391 examples like that are refreshing 👍
More to come Brian. thanks for the support. Dave.
Brilliant, just brilliant. More like this please.
Lots more to come.
Love these videos every Sunday.
Being HVAC and not a full time electrician these are great refreshers.Thanks a lot 👍
Thanks for the comments and support, really appreciated. Dave.
Really appreciate these videos!!
Glad you like them and thanks for the feedback.
Just on time for my for my 2391. Much appreciated sir
Glad to help, there will be some more of these over the next few weeks. Dave.
Excellent video. Really helpful. Thank you so much 👍🏻
Glad it was helpful and thanks for watching.
Question 8: options (a) and (c) are mathematically identical.
They are, but which one answers the question ...
The R1+R2 test results can be used to calculate the earth fault loop impedance by using which formula…
The only answer that tells you Zs is answer a.
That's why I said at the beginning, always choose the most appropriate answer, the one that answers the question.
thanks for watching.
Dave.
nice vid.Well done
Thanks for the feedback and thank you for watching. Dave.
❤
Thank you.
Dave.
Hi thank you for your nice video almost I watched must of your vedio I really enjoyed
I had 2391 exam more then half of my question was scenario it's very hard
Can another vedio if possible this time please make more difficult coz in exam totally different
Thank you
Every exam will be different, otherwise people will tell others what the questions are. Yes, I will be making another exam video very soon. Thanks for watching. Dave.
Thank you
Couldn’t be made simpler
Thank you. Appreciated.
Please help me to understand the higher resistance values at question 4. The resistance of 1 mm2 copper is 0.0175 Ohm/m. Why calculate with 0.0181? Maybe because of temperature? Thanks!
Have a look at appendix I1 in OSG or Table 1 in GN3. Both tellus to use 18.1 miili ohms per metre for copper cable. Hope this helps.
Hello. Beneficial videos created, just one thing: QUESTION 4 in the video, does 0.604 is rounded to 0.61 not to 0.60 what is 0.6 actually? Thank you
The video shows that some exam questions will always round up, some always round down. Other questions will round to the 0.5 division. BUT ... the possible answers will always be clear as to which is correct one to choose. you will never get possible answers as A, 0.60 - B 0.61 etc. A lot depends on how many decimal places you use in calculations too. Hope this helps.
You used 2 different slides for question 2 with 2 different question endings but I suppose an R1+R2 test also does CPC continuity.
No, same slides, same ending. line and cpc. thanks for watching.
@10:30
We rounded to the nearest hundredths place. The 0 in the hundredths place rounds up to 1 because the digit to the right in the thousandths place is 6.
0.41
When the digit to the right is 5 or greater we round away from 0.
0.406 was rounded up and away from zero to 0.41 so how come it is 0.61?
We have specifically said Rounded Up as this is often happens with exam answer lists. The important thing is that you choose the most appropriate answer. Whether it is 0.61 or 0.60 doesn't matter when choosing a set and fixed answer from the list. Hope this helps. Good luck with the exams and thanks for watching. Dave.
Appreciate the knowledge and teaching @learnelectrics
Thank you, appreciated.
Maybe not a fair question to ask, but someone that can get 10/10 on these - how ready are they for the exam?
10 out of 10 is a great score. I will be publishing some more on 2391 soon and I do believe that next weeks video is 18th Edition Exam help (2382). Good luck with your exams. Dave.