Question 1

A normally open contact acts as a switch to pass power when the status of its referenced component is off.

Accepted Answer

A) True 
 B)False  False

Question 2

Which programming language uses a BASIC style?

Accepted Answer

A)  Instruction List 
B)  Ladder Diagram 
C)  Sequential Function Chart 
D)  Structured Text 
A)  Instruction List 
B)  Ladder Diagram 
C)  Sequential Function Chart 
D)  Structured Text D

Question 3

Which programming language is perhaps the most popular?

Accepted Answer

A)  Function Block Diagram 
B)  Instruction List 
C)  Ladder Diagram 
D)  Structured Text 
A)  Function Block Diagram 
B)  Instruction List 
C)  Ladder Diagram 
D)  Structured Text C

Question 4

What precaution should be observed when wiring an emergency stop pushbutton to a PLC?

Accepted Answer

A)  It should be wired normally closed and programmed normally open. 
B)  It should be wired normally open and programmed normally closed. 
C)  Emergency stop pushbuttons should be hard-wired and, therefore, should not be wired to an input module. 
D)  It should be wired normally closed and programmed normally closed. 
A)  It should be wired normally closed and programmed normally open. 
B)  It should be wired normally open and programmed normally closed. 
C)  Emergency stop pushbuttons should be hard-wired and, therefore, should not be wired to an input module. 
D)  It should be wired normally closed and programmed normally closed.

Question 5

Which programming language is considered a low-level language suited for small programs and fast execution?

Accepted Answer

A)  Function Block Diagram 
B)  Instruction List 
C)  Ladder Diagram 
D)  Sequential Function Chart 
A)  Function Block Diagram 
B)  Instruction List 
C)  Ladder Diagram 
D)  Sequential Function Chart

Question 6

PLCs are programmed by combining various instructions to form a(n) ____________________ control circuit.

Accepted Answer

The answer of PLCs are programmed by combining various instructions...

Question 7

Which programming language offers library functions and custom functions?

Accepted Answer

A)  Function Block Diagram 
B)  Instruction List 
C)  Ladder Diagram 
D)  Sequential Function List 
A)  Function Block Diagram 
B)  Instruction List 
C)  Ladder Diagram 
D)  Sequential Function List

Question 8

If you needed to connect a 4-20 mA pressure sensor to a PLC, you would use a(n) ____.

Accepted Answer

A)  analog input module 
B)  analog output module 
C)  digital input module 
D)  digital output module 
A)  analog input module 
B)  analog output module 
C)  digital input module 
D)  digital output module

Question 9

PLC wiring is greatly simplified and reduced compared to point-to-point wiring.

Accepted Answer

A) True 
 B)False

Question 10

The component of a PLC that interfaces between input field devices such as pushbuttons, limit switches, selector switches, and the like and the CPU is the ____.

Accepted Answer

A)  PLC rack 
B)  input module 
C)  output module 
D)  power supply 
A)  PLC rack 
B)  input module 
C)  output module 
D)  power supply

Question 11

Which of the following is not an optional number of inputs for a digital input module?

Accepted Answer

A)  4 
B)  8 
C)  16 
D)  32 
A)  4 
B)  8 
C)  16 
D)  32

Question 12

The component of a PLC that interfaces between output field devices such as relays, motor starters, annunciators, and the like and the CPU is ____.

Accepted Answer

A)  PLC rack 
B)  input module 
C)  output module 
D)  power supply 
A)  PLC rack 
B)  input module 
C)  output module 
D)  power supply

Question 13

The programmable logic controller (PLC) is an assembly of ____________________ digital logic elements designed to make logical decisions and provide control.

Accepted Answer

The answer of The programmable logic controller (PLC) is an...

Question 14

Which programming language is a structured, graphical language?

Accepted Answer

A)  Instruction List 
B)  Ladder Diagram 
C)  Sequential Function Chart 
D)  Structured Text 
A)  Instruction List 
B)  Ladder Diagram 
C)  Sequential Function Chart 
D)  Structured Text

Question 15

What are the two basic types of time-delay functions?

Accepted Answer

The two basic time-d

Exam 25: Programmable Logic Controllers

A normally open contact acts as a switch to pass power when the status of its referenced component is off.

Which programming language uses a BASIC style?

Which programming language is perhaps the most popular?

What precaution should be observed when wiring an emergency stop pushbutton to a PLC?

Which programming language is considered a low-level language suited for small programs and fast execution?

PLCs are programmed by combining various instructions to form a(n) ____________________ control circuit.

Which programming language offers library functions and custom functions?

If you needed to connect a 4-20 mA pressure sensor to a PLC, you would use a(n) ____.

PLC wiring is greatly simplified and reduced compared to point-to-point wiring.

The component of a PLC that interfaces between input field devices such as pushbuttons, limit switches, selector switches, and the like and the CPU is the ____.

Which of the following is not an optional number of inputs for a digital input module?

The component of a PLC that interfaces between output field devices such as relays, motor starters, annunciators, and the like and the CPU is ____.

The programmable logic controller (PLC) is an assembly of ____________________ digital logic elements designed to make logical decisions and provide control.

Which programming language is a structured, graphical language?

What are the two basic types of time-delay functions?

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