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.
Oxygen Equipment 1
If a cylinder(s) is lower than most of the others, use an oil can and use two squirts of engine oil ...
When the exhaust is rich, the output of a zirconia oxygen sensor is above 450 mV.
Most conventional zirconia oxygen sensors and some wide-band oxygen sensors use the cup-type ...
A difference in oxygen content between the atmosphere and the exhaust gases enables an O2S to ...
If 2.00 g of helium gas and 4.72 g of oxygen gas are mixed together, what is the mole fraction ...