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