Which of the following safety statements related to plasma arc cutting is true?
a. A hot-work permit is not required for plasma arc cutting due to the nature of the process.
b. Both methane and propane are lighter than air and rise quickly from the work area if released.
c. Never carry matches or gas-filled lighters in your pockets.
d. Unlike oxyfuel cutting, a vessel can be cut safely with plasma regardless of its contents.
c
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Why do you need both error correction capability and ARQ in a cellular system? Explain clearly.
What will be an ideal response?
Houses and small frame buildings usually have very complex foundation systems.
Answer the following statement true (T) or false (F)
Flue gas condensation can be prevented by
A) Using double wall vent B) Passing the combustion gasses over a de-humidifier before sending them up the vent C) Running a dehumidifier in the room with the furnace D) Using single wall vent
When sketching, all of the lines that make up the object are related to each other by size and direction. The first line of the object that you sketch sets the proportion for the rest of the sketch. This line is called the:
a. reference line b. sketch line c. measurement line d. proportion line