Final Exam ITE 367 T/F Questions and Answers

Final Exam ITE 367 T/F Questions and Answers An offset is a range between two setpoints in which no control action takes place. An actuator is a device that makes decisions to change some aspect of a system based on sensor information and internal programming. An electric motor is a device that converts electrical energy into rotating mechanical force. Integral control is a control algorithm in which the output is in direct response to the amount of offset in the system. Current is measured in hertz and is equivalent to cycles per second. A transformer consists of two windings of conductors around an iron core. A panelboard is a wall-mounted power distribution cabinet containing overcurrent protective devices for lighting, appliance, or power distribution branch circuits. Electricity consumption is measured in kilovolts and is calculated by multiplying the electrical demand by a set amount of time. Transient voltages differ from voltage sags and surges by being smaller in amplitude and longer in duration. A light fixture is an electrical appliance that holds one or more lamps securely and includes the electrical components necessary to connect the lamps to the appropriate power supply. White LEDs are the most common and least expensive. Microwave occupancy sensors are also known as motion detectors. A hygroscopic element is made from a material that changes its physical or electrical characteristics as the humidity changes. Absolute humidity is the air temperature below which moisture begins to condense. A thermostat is a switch that activates at temperatures either above or below a certain setpoint. Air movement of 20 cfm per room is considered ideal. A thermistor is also called a thermocouple. It is common to leave large boilers operating even when the heating demand is low.