CHFM Building Utility Systems 2

Question 1

Which type of medical gas system uses a two-stage pressure regulation process to deliver gas safely to patient care areas?

Accepted Answer

Bulk liquid system with area regulators

Answer

Single-stage manifold system

Answer

Zone valve with inline regulator

Answer

Cylinder rack with check valves only

Question 2

What is the primary function of a pressure-reducing valve (PRV) in a building domestic water system?

Accepted Answer

Reduce incoming water pressure to a safe service level

Answer

Prevent backflow from potable to non-potable supplies

Answer

Increase water pressure for upper floors

Answer

Measure and limit total water consumption

Question 3

In a healthcare facility's electrical distribution system, a static transfer switch (STS) differs from an automatic transfer switch (ATS) primarily because the STS:

Accepted Answer

Transfers power with no interruption using solid-state components

Answer

Requires manual intervention to transfer loads

Answer

Only works with generator sources, not utility feeds

Answer

Is limited to critical branch circuits only

Question 4

A hospital's chilled water system is experiencing high delta-T syndrome. Which action best addresses this problem?

Accepted Answer

Replace air handling unit coils for better heat transfer

Answer

Increase chiller setpoint temperature

Answer

Reduce condenser water flow rate

Answer

Add another chiller in parallel

Question 5

Under NFPA 110, which category requires that an emergency generator reach full load within 10 seconds of utility failure?

Accepted Answer

Level 1, Type 10

Answer

Level 2, Type 60

Answer

Level 1, Type 60

Answer

Level 2, Type 10

Question 6

What is the purpose of a trap seal primer in a healthcare facility's floor drain system?

Accepted Answer

Maintain water in the trap to block sewer gas entry

Answer

Prevent debris from entering the drain pipe

Answer

Increase drain flow rate during peak usage

Answer

Reduce noise from draining water

Question 7

In a variable air volume (VAV) HVAC system, what controls the airflow delivered to each zone?

Accepted Answer

Modulating VAV terminal boxes with dampers

Answer

Variable frequency drive on the main supply fan only

Answer

Chilled water valve position on the AHU coil

Answer

Return air bypass damper at the air handler