Building Control Systems Quiz Objective 1

What are the two types of modern heating, ventilation and air-conditioning (HVAC) building control circuits?

• Pneumatic control and hydraulic building automation control

• Pneumatic control and electronic building automation control

• Hydraulic control and mechanical building automation control

• Thermal control and electrical building automation control

What is the purpose of a pneumatic compressor station in a building control system?

• To measure zone conditions and direct actuators to the control system requirements

• To provide components of the control system with compressed air that is clean and oil-free

• To remove moisture from the air using the principles of air-conditioning

• To reduce the air pressure that leaves the compressor station

What is the function of a mechanical air dryer in a building control system?

• To measure zone conditions and direct actuators to the control system requirements

• To reduce the air pressure that leaves the compressor station

• To provide components of the control system with compressed air that is clean and oil-free

• To remove moisture from the air using the principles of air-conditioning

What is the role of a pressure reducing valve in a pneumatic control system?

• To reduce the air pressure that leaves the compressor station

• To measure zone conditions and direct actuators to the control system requirements

• To remove moisture from the air using the principles of air-conditioning

• To provide components of the control system with compressed air that is clean and oil-free

What is the purpose of a pneumatic sensor in a building control system?

• To reduce the air pressure that leaves the compressor station

• To measure zone conditions and direct actuators to the control system requirements

• To remove moisture from the air using the principles of air-conditioning

• To sense the condition of the controlled medium and provide a compressed air feedback signal to the controller for evaluation

What is the function of a pneumatic actuator in a building control system?

• To receive the controller feedback signal and cause a dimensional change that positions the stem or linkage of the final control device

• To remove moisture from the air using the principles of air-conditioning

• To measure zone conditions and direct actuators to the control system requirements

• To reduce the air pressure that leaves the compressor station

What is the purpose of a mechanical air dryer in a building control system?

• To measure zone conditions and direct actuators to the control system requirements

• To remove moisture from the air using the principles of air-conditioning

• To provide components of the control system with compressed air that is clean and oil-free

• To reduce the air pressure that leaves the compressor station

What is the function of an electric to pneumatic (E/P) solenoid valve in a building control system?

• To reduce the air pressure that leaves the compressor station

• To remove moisture from the air using the principles of air-conditioning

• To measure zone conditions and direct actuators to the control system requirements

• To interface an electrical control system with a pneumatic control system and provide instant control of flow and operational feedback to the main controller

What is the purpose of a building automation system (BAS) in a control system?

• To use microprocessors to control a building's HVAC and lighting system and to monitor the fire alarm and security systems

• To remove moisture from the air using the principles of air-conditioning

• To measure zone conditions and direct actuators to the control system requirements

• To reduce the air pressure that leaves the compressor station

What is the main piece of hardware in a building automation system (BAS) that uses microprocessors to control the system?

• Central processing unit (CPU)

• Mechanical air dryer

• Pneumatic sensor

• Pressure reducing valve