Exam 26: Programming a PLC and Analog Sensing for Programmable Controllers
Exam 1: General Principles of Motor Control, Symbols and Schematic Diagrams11 Questions
Exam 2: Manual Starters and Overload Relays13 Questions
Exam 3: The Control Transformer, Relays, Contactors, and Motor Starters13 Questions
Exam 4: Timing Relays, Pressure Switches and Sensors15 Questions
Exam 5: Float Switches, Flow Switches and Sensors11 Questions
Exam 6: Limit Switches and Phase Failure Relays13 Questions
Exam 7: Temperature Sensing, Devices M Solenoid and Motor Operated Valves12 Questions
Exam 8: Hall Effect Sensors and Proximity Detectors12 Questions
Exam 9: Basic Control Circuits and Photodetectors14 Questions
Exam 10: Schematics, Wiring Diagrams Circuit (1), Timed Starting for Three Motors Circuit (2)10 Questions
Exam 11: Float Switch Control of a Pump and Pilot Lights Circuit (3), Developing a Wiring Diagram Circuit (1)8 Questions
Exam 12: Developing a Wiring Diagram Circuit (2) and Developing a Wiring Diagram Circuit (3)6 Questions
Exam 13: Installing Control Systems and Reading Large Schematic Diagrams13 Questions
Exam 14: Multiple Push Button Stations and Hand-Off-Automatic Controls13 Questions
Exam 15: Forward-Reverse Control, Jogging and Inching14 Questions
Exam 16: Dc Motors and Sequence Control14 Questions
Exam 17: Solid-State Dc Drives and Starting Methods for DC Motors13 Questions
Exam 18: Stepping Motors, the Motor and Starting Methods14 Questions
Exam 19: Autotransformer Starting , Resistor and Reactor Starting for Ac Motors14 Questions
Exam 20: Wye-Delta Starting, Part Winding Starters9 Questions
Exam 21: Braking , Consequent Pole Motors, Variable Voltage and Magnetic Clutches14 Questions
Exam 22: Variable Frequency Control14 Questions
Exam 23: Troubleshooting, Motor Installation and Developing Control Circuits19 Questions
Exam 51: Digital Logic and the Bounceless Switch14 Questions
Exam 25: Programmable Logic Controllers and Start-Stop Push Button Control14 Questions
Exam 26: Programming a PLC and Analog Sensing for Programmable Controllers10 Questions
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The ____ command is used to start a line of logic.
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(Multiple Choice)
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The ENT command causes an instruction to be entered into the logic of the CPU.
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True
Discuss the use of shielded cable in signal wiring and the noise reduction it provides.
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Shielded cable is used for the installation of signal wiring. One of the most common types uses twisted wires with a Mylar foil shield. The ground wire must be grounded if the shielding is to operate properly. This type of shielded cable can provide a noise reduction ratio of about 30,000: 1. Another type of signal cable uses a twisted pair of signal wires surrounded by a braided shield. This type of cable provides a noise reduction of about 300: 1.
What rules must be followed with almost all programmable logic controllers?
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____________________ is a number system that contains only eight digits, 0 through 7.
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____ is generally thought of as being electrically neutral, or zero at all points.
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When using a small programming terminal, the program must be entered in a language called ____.
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What is one common method used to construct an analog pressure sensor?
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How can CPUs differentiate between coils and contacts with respect to the timer command?
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