Control Systems Quiz

A(n) ____ control system is a control system in which compressed air is used to provide power for the control system.

• self-contained

• pneumatic

• electrical

• automated

The control of the environment in commercial buildings is based on energy efficiency and ____.

• cost

• comfort

• size of the building

• type of building

A pneumatic control system is a control system in which ____ is used to provide power for the control system.

• fire

• compressed air

• electricity

• natural gas

In the 1960s, ____ came into common use and was adapted for use in commercial HVAC control systems.

• fluid power

• electricity

• compressed air (pneumatic) power

• solid-state, low-voltage direct current (DC) devices

____ is a designation of the contaminants present in the air.

• Pollution

• Indoor air quality

• Uncirculated air

• Makeup air

____ control systems are used to control basic closed loop systems that require relatively low accuracy.

• Self-contained

• Pneumatic

• Electrical

• Automated

The power to a self-contained control system is supplied by a sealed, ____.

• duct

• fluid-filled element

• pump

• thermostatic expansion valve

As the temperature of the fluid in a pipe or air in a building space changes, the heat transfer in a self-contained control system changes the ____ of the fluid in the power element.

• pressure

• volume

• flow

• power output

The two most common applications of self-contained control systems are ____ and building space temperature control in steam or hot water heating systems.

• dampers

• air compressors

• thermostatic expansion valves

• room thermostats

Most self-contained control systems have relatively poor ____.

• power output

• accuracy

• pressure

• voltage signals