Author Question: Why is a pressure regulator necessary when using nitrogen cylinders? A) The nitrogen must be ... (Read 23 times)

ARLKQ · **on:** Jul 24, 2018

Why is a pressure regulator necessary when using nitrogen cylinders?

A) The nitrogen must be carefully controlled because it is toxic.
B) To boost the pressure leaving the nitrogen cylinder high enough to be used
C) Because the nitrogen is extremely expensive and must be carefully rationed
D) To reduce the pressure in the nitrogen cylinder to a safe level

Question 2

In leak detection, R-22 is used in conjunction with which of the following?

A) Electronic detection B) Soap bubbles
C) Ultrasound D) Visual inspection