When the system is being evacuated and a vacuum is being pulled on the system, the readings on the gauge manifold will register values __________ 0 psig.
A) above
B) below
C) equivalent to

Question

Quizplus · Accepted Answer

When a vacuum is being pulled on the system, the pressure inside the system decreases below atmospheric pressure (0 psig). Therefore, the readings on the gauge manifold will register values below 0 psig.

When the System Is Being Evacuated and a Vacuum Is