Architecture and Design Mechanical, Electrical, and Plumbing (MEP) Systems

Question 1

What does the acronym HVAC stand for in building systems?

Accepted Answer

Heating, Ventilation, and Air Conditioning

Answer

High-Voltage Alternating Current

Answer

Horizontal Vent and Air Control

Answer

Hydraulic Valve and Air Circulation

Question 2

Which HVAC system type controls room temperature by varying the volume of conditioned air supplied to each zone?

Accepted Answer

Variable Air Volume (VAV) system

Answer

Constant Volume (CV) system

Answer

Packaged terminal air conditioner (PTAC)

Answer

Split-system air conditioner

Question 3

What is the primary function of a cooling tower in a commercial chilled-water HVAC system?

Accepted Answer

To reject condenser heat from the refrigeration cycle to the atmosphere

Answer

To filter outdoor air pollutants before distribution

Answer

To store chilled water for peak demand periods

Answer

To pre-cool incoming outdoor ventilation air

Question 4

What term describes the natural vertical air movement caused by temperature differences between indoor warm air and cooler outdoor air that can drive passive ventilation?

Accepted Answer

Stack effect

Answer

Infiltration

Answer

Mechanical draft

Answer

Pressure equalization

Question 5

Which type of ventilation system both supplies fresh air and exhausts stale air in equal quantities to maintain indoor air quality without creating pressure imbalances?

Accepted Answer

Balanced ventilation

Answer

Supply-only ventilation

Answer

Exhaust-only ventilation

Answer

Recirculation ventilation

Question 6

Which ASHRAE standard establishes minimum ventilation rates and indoor air quality requirements for commercial and institutional buildings?

Accepted Answer

ASHRAE 62.1

Answer

ASHRAE 90.1

Answer

ASHRAE 55

Answer

ASHRAE 189.1

Question 7

Which refrigerant largely replaced R-22 in HVAC systems following environmental regulations phasing out ozone-depleting substances?

Accepted Answer

R-410A

Answer

R-11

Answer

R-12

Answer

R-134a