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WorksheetsLesson 3 PLC Characteristics and Input/Output Devices
Total questions: 13
Worksheet time: 7mins
What is typically measured in MHz in a PLC?
Memory
Voltage
Processor Speed
Scan Time
What is the purpose of scan time in a PLC?
To measure input voltage
To complete one full cycle of operations
To store the control program
To execute control instructions
Which of the following is a type of digital input device?
Control Valves
Push Buttons
Temperature Sensors
Analog Meters
What type of signal do analog input devices send to the PLC?
Continuous variable signals
Digital pulses
Binary signals
High/Low signals
Which of the following is NOT a characteristic of PLCs?
Reliability & Durability
Communication Capabilities
User Interface Design
Environmental Characteristics
What does MTBF stand for in the context of PLC reliability?
Maximum Time Between Failures
Minimum Time Before Failure
Mean Time Between Failures
Mean Time Before Failure
Which of the following is an example of a digital output device?
Relays
Pressure Transducers
Temperature Sensors
Flow Meters
What is the function of a relay in a PLC system?
To measure temperature
To send variable signals
To control high power devices
To provide visual feedback
Which programming language is commonly used in PLC programming?
Ladder Logic
Python
Java
C++
What is the typical operating temperature range for most PLCs?
-10°C to 50°C
0°C to 55°C
20°C to 70°C
0°C to 100°C
Which of the following is a characteristic of analog output devices?
They provide manual input
They send binary signals
They receive variable signals
They control the speed of AC motors
What does the IP rating indicate in PLCs?
Input Protocol
Ingress Protection
Internal Processing
Input Power
Which of the following is an example of an analog output device?
Control Valves
Indicator Lights
Limit Switches
Push Buttons
