1In a feedback control loop, the controller acts on the:ASet point onlyBDisturbance onlyCOutput onlyDError between set point and measured valueView AnswerDiscussWorkspaceReportSaveEasy
2The standard analog signal range in process instruments is:A0–100 mAB0–5 AC4–20 mAD1–2 VView AnswerDiscussWorkspaceReportSaveEasy
3A DCS is:AA dryerBA distillation columnCA data cable standardDA distributed control system for plant-wide automationView AnswerDiscussWorkspaceReportSaveEasy
4A transmitter in a control loop:ACalculates the errorBConverts the sensor measurement into a standard signalCMoves the valveDSets the set pointView AnswerDiscussWorkspaceReportSaveEasy
5Proportional control alone usually leaves:AA steady-state error (offset)BNo errorCInfinite errorDOscillations alwaysView AnswerDiscussWorkspaceReportSaveEasy