3A2 Chapter 13 Flashcards
The operator interface unit allows the operator to monitor process conditions and manipulate set points of the process operation. The operator interface unit is located in a central control room. From this location the operator can:
1) view information transmitted from the processing area on an output device such as a video monitor
2) start the process
3) change control conditions from input devices such as a keyboard, mouse or touch screen
4) light boilers and heaters
A) 1
B) 1,2
C) 1,3
D) 1,4
C) 1,3
The measurement and control components of a system are distributed at locations throughout the process area and perform two functions at each location:
1) the measurement of analog and/or digital inputs
2) control globe valves
3) view information transmitted from the processing area on an output device such as a video monitor
4) generation of output signals to actuators that can change process conditions
A) 1,4
B) 1,2,4
C) 3,4
D) 1,2,3,4
A) 1,4
In newer systems the panel boards and consoles of an older analog system are eliminated and the communications are over a shared cable. The shared cable arrangement is called a ______ ______
A) communication wire
B) contact lead
C) data highway
D) pneumatic tubing
C) data highway
List five components of a DCS system:
1) transmitters
2) final control elements
3) printer
4) keyboard
5) operators console
6) controllers
7) input/output cards
A) 1,2,3,4,5
B) 1,2,4,6,7
C) 1,2,3,6,7
D) 1,2,5,6,7
D) 1,2,5,6,7
Programmed algorithms are called function blocks and include proportional, integral and _______ functionality
A) alarming
B) controlling
C) derivative
D) shutdown
C) derivative
The operator interface unit allows operating personnel and process control engineers to alter the set point at which the process is controlled
A) true
B) false
A) true
The three principle components of the operator station are:
1) video monitor
2) coffee pot
3) keyboard
4) recording charts
5) mouse/track ball
A) 1,2,3 B) 2,3,4 C) 1,3,5 D) 3,4,5 E) 2,3,5
C) 1,3,5
From a graphic display, an operator may have the ability to:
1) start or stop a Boiler
2) change the set point of the Boiler master or drum level
3) communicate with outside operators
4) place any loop in manual or automatic mode
5) change chart paper
A) 1,2,5 B) 2,3,4 C) 1,2,4 D) 3,4,5 E) 2,3,5
C) 1,2,4
The faceplate displays _____ ______ when a particular process loop is addressed on the graphic display
A) disappear
B) pop up
C) go dim
D) change shape
B) pop up
Trend displays are the DCS equivalents of _______ ______
A) message boards B) chart recorders C) answering machines D) controllers E) transmitters
B) chart recorders
It is the responsibility of the _____ to acknowledge the alarm, and decide on the appropriate course of action
A) process engineer
B) supervisor
C) operator
D) security
C) operator
An automatic shutdown is controlled by either the:
1) central computer system
2) operator
3) programmable logic controller
4) project engineering
A) 1,2
B) 1,3
C) 1,3,4
D) 1,2,3,4
B) 1,3
List four DCS input devices: A) keyboard B) calculator C) mouse D) track ball E) pen F) touch screen
A) a,d,e,f
B) a,c,d,f
C) a,b,d,f
D) a,c,d,e
B) a,c,d,f
Programmable logic controllers (PLCs) were originally designed to control processes that require a ______ to be followed
A) normal tracking device
B) sequence of events
C) event happening
D) list
B) sequence of events
PLCs retrieve information from a process, and based upon the information at a particular point in time, generate a control signal
A) true
B) false
A) true
