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 engine is rotated until the timing marks again align indicating that the companion cylinder ...
A typical zirconia oxygen sensor.
Connecting a handheld digital storage oscilloscope to an oxygen sensor signal wire. The use of the ...
The waveform of a good oxygen sensor as displayed on a digital storage oscilloscope (DSO). Note ...
Severe hash is almost always caused by cylinder misfire conditions.
Oxygen affinity of hemoglobin as a function of pH