Q PROCESS INSTRUMENTATION CH. 8 TEST Match the terms: A. Bypass switch B. Limit switch C. Process variable switch D. Alarm system E. Vibration sensor F. Switch G. Proximity switch H. Relay I. Alarm switch J. Shutdown switch K. Vibration sensor 1.__-a series of alarms associated with one process unit or equipment system. 2.__a switch used to override the normal operation of a system or device for equipment startup operations or for routine check of alarms. 3.__-an electromechanical device used to limit travel of a component beyond a predetermined point. 4.__-a type of switch that actuates when a predetermined value of a process variable (eg pressure, temperature, level, flow, or analytics) is present. 5.__-a type of switch operation requiring the presence, or closeness, of an object or device to facilitate its operation. 6.__an electromechanical device that boosts, maintains, or controls the electrical flow of a signal through a separate circuit. 7.__-a switch used to actuate a circuit that shuts down a process system or equipment unit 8.__-an electrical device used to start, stop, or otherwise reconfigure the flow of electricity in a circuit. 9.__-a device used to determine the velocity, acceleration, displacement, or any combination of these characteristics for the purpose of predicting wear or impending failure. High vibration would activate a switch for an alarm or equipment shutdown. MULTIPLE CHOICE 10. Which switch closes its contacts when powered? Normally open b. Normally closed c. Both normally open and normally closed d. Neither normally open nor normally closed 11. What type of switch is initiated by physical contact the switch to the process component? a. Hand switch b. Selector switch c. Limit switch d. Proximity switch 12. Which of the following is a position that a toggle swi can be placed in? a. Hand b. Off c. Auto d. All of the above 13. What type of switch is used to override different parameters in the operation of a system or device? a. Bypass switch b. Proximity switch c. Limit switch d. Vibration sensor 14. Which of the following defines relays when applied to pneumatic devices? a Discrete devices that handle continuous signals b. On/off devices that handle continuous sugnals c. Analog instruments that handle continuously variable signals 15. What type of relay contains a high pressure or volume source that increase the signal value or volume? a. timing b. Selection c. Thermally operated d. Pneumatic booster PreviousNext