MCQs on Air Conditioning Systems

What is the primary function of air conditioning systems (ACS)?

• To improve architectural appearance

• To heat and cool the air inside buildings or enclosed spaces

• To increase outdoor air circulation

• To enhance duct durability

Which of the following is NOT a main type of air conditioning system?

• Central Air Conditioning

• Multi-Split Systems

• Manual Ventilation Systems

• Chilled Water Air Conditioning

What is a significant benefit of zoning in air conditioning systems?

• It increases duct friction losses

• It allows personalized and efficient climate control

• It reduces the need for air handling units

• It eliminates the need for thermostats

Which factor does NOT influence zoning decisions?

• Room air conditions

• Comfort tolerance

• Heat loads

• Type of thermostat used

What is the function of duct systems in ACS?

• To provide insulation for outdoor air

• To transmit treated air from the air handling apparatus to the conditioned space

• To separate zones for privacy

• To increase the velocity of airflow

Duct systems are classified based on which two parameters?

• Velocity and pressure of air

• Insulation and length

• Appearance and width

• Cost and heat gain

What does the aspect ratio of ducts represent?

• The temperature difference between two ducts

• The ratio of duct height to air pressure

• The ratio of the long side to the short side of a duct

• The friction losses in the ducts

Which zoning system uses sensors to control climate conditions?

• Multi-Zone Control System

• Flexible Zoning Control System

• Pressure Zoning Control System

• Sensor-Based Zoning System

Why are Class A fittings preferred over Class B fittings in duct systems?

• They have higher durability

• They require less fabrication time and are more cost-effective

• They provide better airflow management

• They are easier to clean

What is the main purpose of reducing heat gain or loss in ducts?

• To reduce duct maintenance

• To improve system appearance

• To decrease cooling or heating requirements and improve efficiency

• To allow for larger duct dimensions