PLC and System Interfacing Quiz

What type of systems use alternating current (AC) or direct current (DC) to produce power?

• Fluid Power Systems

• Mechanical Systems

• Informational Systems

• Electrical Systems

Which systems are responsible for displaying quantities and conditions to indicate the status of a circuit?

• Informational Systems

• Mechanical Systems

• Fluid Power Systems

• Electronic Systems

What is the primary purpose of interfacing systems?

• To store data

• To interconnect primary systems of various types

• To produce sound or vision

• To control the movement of energy

What is required when the existing electrical power is not at the proper phase, voltage, or current level for an application?

• System Interfacing

• Circuit Conditioning

• Mechanical Coupling

• Data Storage

What must a basic electrical circuit include?

• A source of electricity, a method of controlling the flow, and a protection device

• A method of controlling the flow, a protection device, and a data storage unit

• A source of electricity, a protection device, and a data storage unit

• A source of electricity, a method of controlling the flow, and a component that converts energy

How are multiple loads typically wired in basic PLC control circuits?

• In a loop to the PLC input terminals

• In parallel to the PLC output terminals

• In series to the PLC output terminals

• In a grid to the PLC input terminals

What is the role of relays in controlling high power loads?

• To store data

• To convert electrical energy

• To close contacts by magnetic force

• To display information

What is the function of a step-down transformer in motor control?

• To store electrical energy

• To increase the voltage

• To reduce the high voltage to a low voltage

• To convert AC to DC

Which device is used to control motor speed by adjusting the frequency of electricity?

• Magnetic Motor Starter

• Step Down Transformer

• Solid State Relay

• Electric Motor Drive

What type of switch contacts can be used to control an electric motor drive?

• Informational displays

• Data storage units

• Push buttons and pressure switches

• Protection devices