« previous next »

Author Question: The first company to build PLCs was ________. A) Allen Bradley B) General Motors C) Modicon D) ... (Read 18 times)

OSWALD

  • Hero Member
  • *****
  • Posts: 580
on: Jul 28, 2018
The first company to build PLCs was ________.
 
  A) Allen Bradley B) General Motors C) Modicon D) Square D

Question 2

Which of the following statements is correct?
 
  A) The number of ladder logic virtual relays and input and output instructions is limited only by memory size.
  B) The number of contacts for a mechanical relay is limited to number of coils on the relay.
  C) A ladder logic program is hard to analyze because it is totally different when compared with the equivalent relay logic solution.
  D) Ladder logic is a PLC graphical programming technique introduced in the last 10 years.


Sierray

  • Sr. Member
  • ****
  • Posts: 343
Reply #1 on: Jul 28, 2018
Answer to Question 1

C

Answer to Question 2

A


Related Topics

Need homework help now?

Ask unlimited questions for free

Ask a Question

OSWALD

  • Hero Member
  • *****
  • Posts: 580
Reply #2 on: Jul 28, 2018
Thanks


Sierray

  • Sr. Member
  • ****
  • Posts: 343
Reply #3 on: Jul 28, 2018
Welcome :)


« previous next »
 

Did you know?

Cyanide works by making the human body unable to use oxygen.

Did you know?

Your heart beats over 36 million times a year.

Did you know?

In the United States, congenital cytomegalovirus causes one child to become disabled almost every hour. CMV is the leading preventable viral cause of development disability in newborns. These disabilities include hearing or vision loss, and cerebral palsy.

Did you know?

Blood in the urine can be a sign of a kidney stone, glomerulonephritis, or other kidney problems.

Did you know?

For high blood pressure (hypertension), a new class of drug, called a vasopeptidase blocker (inhibitor), has been developed. It decreases blood pressure by simultaneously dilating the peripheral arteries and increasing the body's loss of salt.

General structure of eukaryotic pre-rRNA transcription units General structure of eukaryotic pre-rRNA transcription units
Body Part, Method of Examination, and Equipment Used During the General Physical Examination Body Part, Method of Examination, and Equipment Used During the General Physical Examination
T cells are of three general types: (1) helper T cells that secrete cytokines, which upregulate the ... T cells are of three general types: (1) helper T cells that secrete cytokines, which upregulate the ...
Injectable General Anesthetics Injectable General Anesthetics
Hand exercise devices build strength for injury prevention. Hand exercise devices build strength for injury prevention.
Mediator as a bridge between gene-specific regulatory factors and the general transcription Mediator as a bridge between gene-specific regulatory factors and the general transcription
Video: Deglutition

For a complete list of videos, visit our video library