chapter 412
When using a programmable controller to control a conveyor system, the memory contacts for START PB switches are ___. Select one: a. hardwired b. programmed
programmed
___ can be connected to the input terminals of a programmable controller. Select one: a. A foot switch b. A pushbutton switch c. The NC contacts of a timing relay d. Any of these
Any of these
A(n) ___ is a solid-state control device that is programmed and reprogrammed automatically to control an industrial process or machine. Select one: a. PNP b. PLC c. SCR d. NPN
PLC
When choosing a programmable controller, a(n) ___ is generally the first choice for controlling an industrial electrical circuit or system. Select one: a. HMI b. PLC c. PLR d. PAC
PLC
PAC is an abbreviation for ___. Select one: a. Process Accumulation Center b. Power Analog Circuit c. Programmable Automation Controller d. Product Analysis Control
Programmable Automation Controller
An HMI is a ___. Select one: a. Humidity Monitor Interlock b. Heavy Manufacturing Integration c. Handheld Module Input d. Human Machine Interface
Human Machine Interface
When NAND logic is utilized in a control circuit, the output (load) is de-energized when ___. I. both inputs A and B are activated II. neither input A nor B is activated III. Either input A or B is activated Select one: a. I & II only b. III only c. I only d. I & III only e. II only
I only
When testing output devices, the programmable controller should be in ___ mode. I. TEST II. PROGRAM III. RUN Select one: a. II only b. II or III only c. I only d. I or II only e. III only
I or II only
When AND logic is utilized in a control circuit, the output (load) is de-energized when ___. I. both inputs A and B are activated II. neither input A nor B is activated III. either input A or B is activated Select one: a.II & III only b.III only c.II only d.I only e.I & II only
II & III only
The ___ section of a programmable controller provides the voltage required for internal operation and charging the internal battery. Select one: a. power supply b. programming c. processor d. input/output
power supply
A PLR is a solid-state control device that includes ___. Select one: a. timers b. relays c. counters d. all of these
all of these
The processor section of a programmable controller organizes all control activity by ___. Select one: a. controlling the outputs b. receiving inputs c. performing logical decisions d. all of these
all of these
Various manufacturers refer to a PLR as a ___. Select one: a. nano-PLC b. smart relay c. micro-PLC d. all of these
all of these
For a programmable controller, ___ are used to assign addresses to inputs, outputs, timers, and other internal and external components. Select one: a. numbers b. letters c. both a and b d. neither a nor b
both a and b
A furniture plant is an example of ___ manufacturing. Select one: a. discrete b. process
discrete
For a programmable controller, the most common I/Os are ___. Select one: a. data b. onboard c. discrete d. none of these
discrete
Programmable controllers can be used to control ___ actuators. Select one: a. rotary b. linear c. both a and b d. neither a nor b
both a and b
When testing input devices for a programmable controller, they should be tested ___. Select one: a. as a group b. individually
individually
To operate properly, the programmable controller input module should supply power to the ___ devices. Select one: a. input b. output
input
When signaling cables operating at low-voltage DC are installed in close proximity to AC cables, these cables should installed ___ to each other to minimize interference. Select one: a. perpendicular b. parallel
perpendicular
To reduce electrical noise, sensitive analog and digital input devices are connected to a programmable controller with ___ cable. Select one: a. shielded b. flat c. integrated gas spacer d. any of these
shielded
NAND logic utilizes ___ switch contacts for connection to programmable controller input terminals. Select one: a. normally-open b. normally-closed
normally-closed
OR logic utilizes ___ switch contacts for connection to programmable controller input terminals. Select one: a. normally-open b. normally-closed
normally-open
When troubleshooting programmable controller modules, voltage can be measured using a ___. Select one: a. vibrating voltage tester (Wiggy®) b. DMM c. either a or b d. neither a nor b
DMM
When programming input and output devices for a programmable controller, each device must be assigned a(n) ___ to link these to processor and data files. Select one: a. multiplex b. color code c. address d. any of these
address
For a PLC, high inrush current and transients can ___. Select one: a. shorten its operating life b. cause false signals within the system c. destroy the outputs d. any of these
any of these
Programmable controllers may be ___. Select one: a. used as stand-alone control devices b. connected through communication term-22n ports to other devices or controllers c. either a or b d. neither a nor b
either a or b
A PLC ___ capable of directing a VFD to cause a motor to turn at varying speeds. Select one: a. is not b. is
is
Where used in a control circuit, relay coils are connected to the ___ terminals on a programmable controller. Select one: a. input b. output
output
For programmable controllers, care must be taken when using the force command because it ___ designed for the program. Select one: a. restores the program to the factory default b. enables all outputs c. overrides all safety features d. all of these
overrides all safety features
When connected to a programmable controller, the actual wiring of a switch's contacts (limits, floats, pushbuttons, etc.) requires that one switch terminal be connected to a dedicated controller input terminal. The other switch terminal is to be connected to ___ terminal on the controller. Select one: a. the V-in or VAC output b. another dedicated input c. the VDC or C input
the VDC or C input
