Question 1

Programming may be accomplished either at the processor site or remote to the processor.

Accepted Answer

Programming can be done both locally, directly on the hardware or processor site, and remotely, via network or internet connection. Programming can be done through a processor's command line interface or remotely through a network connection using various software tools.

Question 2

The self-synchronous transmission system is a system used for transmitting, by electrical means, any signal that can be represented by .&#10;A)angular position&#10;B)two types of diagrams&#10;C)a wiring diagram&#10;D)loops of the relay armature flux

Accepted Answer

The self-synchronous transmission system is used for transmitting signals that can be represented by angular position. The self-synchronous transmission system is specifically designed for transmitting signals that can be represented by angular position, such as signals from a rotary encoder. The system uses the principles of synchronous motors to transmit and receive these signals. Therefore, option A is the best choice. Option B, C, and D do not accurately describe the type of signal that can be transmitted using this system.

Question 3

If the solid-state output of a programmable controller is intended to control an AC voltage, the output control device will be a .&#10;A)CPU&#10;B)triac&#10;C)LED&#10;D)transistor

Accepted Answer

A triac is a commonly used solid-state output control device that is capable of controlling AC voltage. Transistors can control DC voltage, but not AC voltage. CPUs and LEDs are not output control devices. When controlling an AC voltage, a triac is the appropriate solid-state output control device. Transistors can only control DC voltage, and LEDs and CPUs do not function as control devices.

Question 4

Input modules sense whether the input devices are on or off.

Accepted Answer

Input modules are responsible for sensing whether input devices such as keyboards, mice, and touchscreens are on or off. Input modules act as an interface between input devices and the system. They sense whether the input devices are on or off, and convert their signals into a format that can be processed by the computer's central processing unit (CPU).

Question 5

A synchro unit draws but little power from the line and is designed for .&#10;A)infrequent starting&#10;B)use in hazardous locations&#10;C)continuous duty excitation&#10;D)starting duty only

Accepted Answer

A synchro unit is designed for continuous duty excitation as it is primarily used for maintaining synchronous operation of an AC generator with the power grid, which requires continuous excitation. The other options do not align with the function of a synchro unit. Synchro units are designed for continuous duty excitation, so the best choice is C. They are not necessarily designed for infrequent starting, use in hazardous locations, or starting duty only.

Question 6

The brain of the programmable controller is the memory.

Accepted Answer

The brain of a programmable controller (PLC) is the Central Processing Unit (CPU), which interprets inputs, executes the control program stored in memory, and sends output signals.

Question 7

Some output modules are capable of switching starters through size 10.

Accepted Answer

The answer of Some output modules are capable of switching...

Question 8

If you set your alarm clock or clock radio to wake your household in the morning, you have programmed a controller.

Accepted Answer

This is because the alarm clock or clock radio has been programmed to perform a specific task at a certain time, which is the definition of a controller. Setting an alarm clock or clock radio involves programming a controller to activate at a specific time to perform a pre-defined action (ringing the alarm, playing music, etc.).

Question 9

Permanent magnet synchronous motors are AC motors that eliminate the slip characteristic of motors.&#10;A)large&#10;B)stepper&#10;C)small&#10;D)induction

Accepted Answer

Permanent magnet synchronous motors are designed in such a way that they eliminate the slip characteristic of induction motors. This is because they use a permanent magnet rotor, which rotates at synchronous speed with properly controlled AC currents in the stator windings. As a result, they provide high efficiency and accurate control, making them suitable for various industrial and commercial applications. Permanent magnet synchronous motors (PMSMs) are AC motors that use a permanent magnet rotor and stator windings to create a fixed magnetic field. This eliminates the slip characteristic of induction motors, which rely on the relative motion between the rotor and stator to induce a current and create a magnetic field. PMSMs are more efficient and have better speed control than induction motors, making them ideal for high-performance applications.

Question 10

A modern motor control center combines the latest automation technologies in a common .&#10;A)enclosure&#10;B)function&#10;C)shaft&#10;D)surface

Accepted Answer

A motor control center typically consists of a single enclosure that houses multiple motor starters, circuit breakers, and other control devices. This enclosure provides a common interface for the various automation technologies used in motor control, making it easier to manage and maintain the system as a whole. A motor control center is a collection of various components used to control and operate electric motors. These components are assembled in a common enclosure, which is designed to provide protection and easy maintenance access. Therefore, enclosure is the correct answer for the blank.

Deck 58: Programmable and Motion Control