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Exam 2: Plc Hardware Components

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Question 1

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The PLC chassis comes in different sizes according to the:

A) size of the program.
B) type of I/O modules used.
C) number of slots they contain.
D) all of these.

E) A) and C)
F) C) and D)

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Question 2

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The location of a specific input or output field device is identified by the processor by means of its:

A) voltage rating.
B) current rating.
C) wattage rating.
D) address.

E) C) and D)
F) B) and C)

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Question 3

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Light is used in I/O modules to separate the real-world electrical signals from the PLC internal electronic system.

Most PLC programming software will allow you to develop programs on another manufacturer's PLC.

The most common form of memory used to store,back up,or transfer PLC programs is:

The I/O system provides an interface between:

Electrical noise usually causes permanent operating errors.

I/O modules are normally installed or removed while the PLC is powered.

Volatile memory elements can be classified as those that:

I/O modules are keyed to prevent unauthorized personnel from removing them from the I/O rack.

In event of a power interruption,a(an) _____ is used in some processors to provide power to the RAM.

The schematic diagram of Figure 2-6 is an example of how a PLC output module is connected to:

Which of the following devices can be used for switching the output of a discrete DC output module?

Analog signals can have only two states.

For the block diagram of the input module shown,Section #1 represents the ____ and #2 the ____

A redundant PLC system is configured using two processors.

A/An ____ input or output is a continuously variable signal within a designated range.

If you had a hand-held programming terminal from one manufacturer you can program only that manufacture's PLC using it.

The processor module of the PLC is where the:

Hot swappable I/O modules are designed to be changed with the power on and the PLC operating.