Question: Multiple Choice 2 points What type of control system uses pressurized air to transmit signals from sensors to controllers and control devices? Electro-mechanical control systems

Multiple Choice 2 points What type of control system uses pressurized air to transmit signals from sensors to controllers and control devices? Electro-mechanical control systems Electronic control systems Pneumatic control systems Barometric control systems Multiple Choice 2 points Which of the following elements could be inputs for a commercial and industrial control system? Return and supply air temperature Indoor humidity Indoor and outdoor temperature All of the choices are correct Multiple Choice 2 points Which of the following installation steps are required with a free standing air-cooled packaged unit with a remote condenser? Power Wiring to remote condenser Power Wiring to indoor unit Control wiring All of the choices are correct Multiple Choice 2 points What is an advantage of using electronic control systems to control commercial and industrial air conditioning systems?. Smaller components that are easier to work with Electronic controls operate on very low voltages All of the choices are correct Versatility to control variable speed or variable capacity loads Multiple Choice 2 points Why is capacity control used on large, conditioned air systems? Variations in equipment capacity Variations in chiller capacity Variations in boiler capacity / ) Variations in cooling load of structure

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