« previous next »

Author Question: The first company to build PLCs was ________. A) Allen Bradley B) General Motors C) Modicon D) ... (Read 63 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?

In the United States, an estimated 50 million unnecessary antibiotics are prescribed for viral respiratory infections.

Did you know?

The training of an anesthesiologist typically requires four years of college, 4 years of medical school, 1 year of internship, and 3 years of residency.

Did you know?

The Romans did not use numerals to indicate fractions but instead used words to indicate parts of a whole.

Did you know?

The cure for trichomoniasis is easy as long as the patient does not drink alcoholic beverages for 24 hours. Just a single dose of medication is needed to rid the body of the disease. However, without proper precautions, an individual may contract the disease repeatedly. In fact, most people develop trichomoniasis again within three months of their last treatment.

Did you know?

Asthma cases in Americans are about 75% higher today than they were in 1980.

The general pattern of progression of an untreated HIV infection The general pattern of progression of an untreated HIV infection
A sod house in North Dakota, 1896. Individual “bricks” of sod were hewn from the ground and stacked A sod house in North Dakota, 1896. Individual “bricks” of sod were hewn from the ground and stacked
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
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
An organizational specialist is hired as a consultant to a company planning to open a coffee ... An organizational specialist is hired as a consultant to a company planning to open a coffee ...
Jia's Fashions recently paid a $2 annual dividend. The company is projecting that its ... Jia's Fashions recently paid a $2 annual dividend. The company is projecting that its ...
Video: Graded potentials - electrical characteristics and types

For a complete list of videos, visit our video library