Why might closing the oxygen cylinder, then the acetylene cylinder, then bleeding first the oxygen line, then finally the acetylene line at the end of a brazing project create a hazardous situation?
A) The acetylene and oxygen lines should be bled simultaneously.
B) The acetylene and oxygen cylinders should be closed simultaneously.
C) The acetylene cylinder should be closed first.
D) The last gas to go through the torch will be a flammable gas.
Question 2
When the heat load on the evaporator increases, the automatic expansion valve:
A) Closes to keep the pressure from increasing.
B) Does nothing because AEVs are not modulating devices.
C) Sends a signal to the electronic control board indicating the change.
D) Opens to feed more refrigerant.
The carbon-nitrogen-oxygen cycle of The Sun
Oxygen Equipment 2
In this design, the fuel injector is at the top of the cylinder and sprays fuel into the cavity of ...
A backpressure tool can be made by using an oxygen sensor housing and using epoxy or braze to hold ...
CaCO3 with oxygen isotopes
The minimum number of moles of oxygen needed to completely consume 4 moles of C3H8O is ...