2391 exam question on max Zs values

[voltage]

Hi guys just looking at some 2391 exam papers and came accross this question could someone help me on this as to how to work it out many thanks.




Refer to the measured values, tabulated below.
Circuit
1
2
3
4
5
6
7
8
Measured Zs
0.8
1.1
1.3
6.2
5.1
2
0.6
1.3

Calculate these values are acceptable.



ANSWERS BELOW but how do you work it out from the table above ?

2. Maximum Zs values given in schedule:

Circuit ​

1 ​

2 ​

3 ​

4 ​

5 ​

6 ​

7 ​

8 ​

Measured Zs ​

0.8​

1.1​

1.3​

6.2​

5.1​

2​

0.6​

1.3​

Max Zs ​

1.2​

1.5​

1.5​

8​

8​

3​

0.96​

1.5​

¾ Max Zs ​

0.9​

1.125​

1.125​

6​

6​

2.25​

0.72​

1.125​

Acceptable? ​

Yes​

Yes​

No​

No​

Yes​

Yes​

Yes​

No​

 

[malcolmsanford]

It's an old paper by the looks of things as the rule of thumb is not now 3/4 but 0.8, so don't if your doing the 2391-10 think the rule of thum is 3/4, I know a guy that did about 10 past papers and got that in his mind, and fialed.

 

[Guest123]

Cant work what value is for what there.....can you tidy up the question a bit???

 

[malcolmsanford]

I thought I answer this on another post Lenny ..................please tell me I have or the pills are not working again.

 

[Guest123]

I thought I answer this on another post Lenny ..................please tell me I have or the pills are not working again.

Found & merged.

 

[voltage]

alright guys thnx for replys but i found what i was looking for in my inspection and testing book. Could Admins delete this post many thanks.
Sorry i copied and pasted the tables but it came out vertical instead of accross the page sorry guys.