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Module 3 Controllers Part 2 Flashcards | StudBud
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Module 3 Controllers Part 2
Module 3 Controllers Part 2
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Answers
1
Microcontrollers are well-suited for fast signal calculations like audio or video filtering.
True
False
2
What is the primary purpose of a Programmable Logic Controller (PLC)?
Simulate mechanical systems in real-time
Perform complex mathematical operations
Replace microcontrollers in embedded systems
Interface and control analog and digital devices in industrial environments
3
A PLC rung has two inputs in series: one NO and one NC. If only one input is active, what happens to the output?
The output enters a fault state
The output turns ON
The output remains OFF
The output toggles
4
Which device is typically used as an output in a PLC system?
Timer
Motor
Proximity sensor
Limit switch
5
What happens when the rung in a PLC program is FALSE?
A timer is always activated
The output is de-energized
The output remains in the last state
The output is energized
6
Microcontrollers are typically embedded in systems requiring real-time control with limited resources.
True
False
7
A single-board computer often runs an operating system and supports high-level programming languages.
True
False
8
Which of the following is TRUE about Normally Closed (NC) inputs?
They are closed by default and open when activated
They are closed by default and open when activated
They always energize an output
·A. They are open by default
9
NO contacts allow current to pass through when they are not activated.
True
False
10
Minicontrollers combine features of microcontrollers and additional peripherals for easier interfacing.
True
False
11
which event typically triggers the start of a timer during a forward-reverse motion cycle?
When the actuator returns to its home position
When the start button is pressed
When the actuator reaches the end of its forward travel
When the emergency stop is reset
12
Timers in PLCs can be used to delay or schedule specific output actions.
True
False
13
What is the primary advantage of using DSPs over microcontrollers?
Easier programming interface
Faster high-speed floating point operations
Smaller size
Lower power consumption
14
What kind of operation does a latching circuit perform?
Automatically reverse the output
Store the ON state until reset
Delay the output response
Generate pulses
15
In ladder logic, rung conditions must all be met for the output to be energized in series logic.
False
True
16
In a PLC ladder diagram, what do the vertical lines (rails) represent?
Power and ground
Program start and end points
Logical gates
Signal amplifiers
17
What programming method is commonly used for PLCs?
C++
Python
Assembly
Ladder logic
18
. PLCs require the use of assembly language to program ladder logic.
True
False
19
PLC systems are commonly used in environments with dust, vibration, and temperature extremes.
True
False
20
Rungs in ladder logic diagrams represent the flow of electrical current from left to right.
False
True
