Answer the following statement(s) true (T) or false (F)

1. Nonconductive optical fiber cables can be run in the same raceway or cable tray as Class 1
circuits.
2. Plastic optical fibers are a preferred choice in extreme temperatures.
3. Light travels in the form of an electromagnetic wave.
4. There is a difference between the index of refraction between the core and cladding of an
optical fiber cable .
5. Loose-tube cable is more commonly used inside a building.


1. T
2. F
3. T
4. T
5. F

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What will be an ideal response?

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Answer the following statement(s) true (T) or false (F)

Dry buildings are easier to heat than damp ones.

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Technician A says that a thermoset paint, when fully cured, will get soft when solvents are applied. Technician B says that a thermoplastic paint, when fully cured, will not get soft when solvents are applied. Who is correct?

A. Technician A only B. Technician B only C. Both Technicians A and B D. Neither Technician A nor B

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At what pressure range does the technician valve off the vacuum pump when evacuating to a deep vacuum?

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