Question 1
Can a field device marked Ex nl be used in an Ex ic circuit?
- Yes.
- No.
Exi Protection Concepts (Exi a, b, c, nl)
CBT 28 questions
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Question 2
Do we need to take into account any junction boxes and plugs in an IS circuit?- Yes, as a simple apparatus.
- No, because they are simple apparatus.
Question 3
If a color is used to identify an intrinsically safe circuit, what colour should this be?- Black.
- Green.
- Light blue.
- Light red.
Question 4
If an associated apparatus is marked with [Ex ib IIC], can this be used for applications in zone 0?- Yes.
- Yes, if the field device has EPL Ga/ATEX cat II1G.
- No.
Question 5
If we install an Ex «nl» transmitter in an IS loop, what level of protection will the circuit achieve at best?- Ex «ic».
- Ex «ib».
- Ex «nL».
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About this CBT test
Exi Protection Concepts (Exi a, b, c, nl) is a CBT test with 28 questions and verified answers. Common topics include: parameter greatest, field devices, intrinsically safe, suitable zone, circuit, iic, barriers, equipment.
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