Author Question: When minimal fluctuations in pressure and flow are critical factors, which of the following ... (Read 39 times)

brutforce · **on:** Jul 16, 2018

When minimal fluctuations in pressure and flow are critical factors, which of the following pres-sure-reducing valves would be the best choice?

a. Single-stage preset pressure-reducing valve
b. Multiple-stage pressure-reducing valve
c. Uncompensated Thorpe tube flowmeter
d. Bourdon adjustable pressure regulator

Question 2

When used to control the flow of medical gases to a patient, how is a flow restrictor classified?

a. Variable-orifice, constant-pressure flow-meter device
b. Fixed-orifice, variable-pressure flowmeter device
c. Variable-orifice, variable-pressure flow-meter device
d. Fixed-orifice, constant-pressure flowmeter device

Rilsmarie951 · **Reply #1 on:** Jul 16, 2018

Answer to Question 1

ANS: B
For this reason, a multiple-stage reducing valve should be considered only if minimal fluctuations in pressure or flow are critical factors, as in research activities. For routine hospital work, sin-gle-stage reducing valves are satisfactory.

Answer to Question 2

ANS: D
A flow restrictor is a fixed-orifice, constant-pressure flowmeter device.