Hi all, I'm currently studying for the 17th edition exam and brought a load of past papers from ebay.
I come across a few questions that I think the wrong has been given. I would like some help to clarified weather the answer is correct or not.
I will post any questions that I have an...
Can you help?
If a 4 HP DC Motor is running at 60 % efficiency when connected to a 200 volt DC power source, then how many amps does it draw?
21.31 50.86 57.65 61.04 88.07
HP x 746
E x %Eff
This was the equation I use but cant get the right answer! HHHEEEELLLPPP!!!
I'm struggling to understand the answer to this question....
A ring circuit is 54 metres long and is wired in 2.5/1.5 Thermoplastic cable. The Ze for the installation is 0.24Ohms. Cable resistance is 19.51 mOhms per metre. Calculate the Zs for the circuit?
I'll reveal the 'book' answer, once I...
Please I need answers to these questions, thank you.
Q1. A three phase equipment is rated 415 volts (380-415), 6000 watts, what is the current drawn per phase.
Q2. What happens if power is only supplied to one phase of a three phase meter? does the normal bill drops by 1/3rd
or only...
Hello reader, I have started a part time course in college for 2 years which will include learning electrical engineering at level for the first year and completing a 2330 C&G in the second year, I do not know who to ask as to where this will get me and how fast it will get me in to the trade...
NeedsCareer
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Hi,
Just found a question and answer page at the b and q website, if you go to fix then to cable and accesories in the electrical section, there is a question and answer section at the bottom of the page.
I am interested to gather peoples views and opinions on this, take a look and post your...
1. List where you test on a 3 phase and neutral installation to confirm Safe Isolation?
2. What documents are required for a new installation, who is responsible for determining next test and who the forms are given to?
3. Sketch layout of a TN-C-S domestic intake position? Page 15 in OSG...
I dont want to get into a part P debate here but have a couple questions as i cant find the answer. Ive done the c&g 2330 2 and 3 and am taking a test tomorrow on part P to be followed by the 17th exam and the 2391. Anyway i have a folder of info i have to learn for tomorrow and am totally...
I am in the process of going self employed. Just wanted to know if anybody has recently enrolled with the NIC, Im looking at the process at the moment and would like to know if anybody was actually asked to show proof that the two jobs assested on the day were signed off by building control. Not...
telectrical
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Hi
I would appreciate it if anyone can find some questions with answers or links or materials for Inspection and Testing C&G 2391.
I am very grateful for any help.
:oI am studying for my 2391 exam I have been reading through lots of past papers,I was wondering if any one could copy and paste the shortest acceptable answer the exam board would accept when asked : describe how you would carry out an insulation resistance test,an earth loop impedance test and...
Hi guys sorry just a few more questions i need help on much appreciated.
1.What do we mean when we talk about ‘decommissioning of electrical systems’?
2. Which three electrical tests are likely to be carried out by a plumber?
3. Which two items of equipment would be used?
4. What...
Delboi1992
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My wife works for a world wide expensive bathroom company and deals with litigation, complaints, ombudsman etc. Regarding warranties on anything the law states:- with proof of purchase and proof that the fault was not caused by a third party you can receive an exchange like for like or nearest...
A bit of a strange one.
Second fixed downlights to a new kitchen ceiling after it had been skimmed and painted, no problems everything tested OK both live and dead,
During week plasterer returns and re plasters all the walls. He has used metal angle bead on all the external corners. Where...
Getting really frustrated now, as I have posted a thread about testing insulation resistance on a 3 phase motor and central heating system.
I have had people saying that you test parts of a central heating system such as boiler, valves, stats etc on 250v. And test 500v up to the spur.
But...
Hi
I have noticed a few threads regarding these two cards.
My question is as there seems to be a quite a few jobs out there which require this card which one am I able to get to enable me to gain work with the companies who are asking for this?
I have looked on the websites but dont think...
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