This topic contains a solution. Click here to go to the answer
« previous next »

Author Question: The examine if open instruction ________. A) Is an input instruction only used for field devices ... (Read 126 times)

vinney12

  • Hero Member
  • *****
  • Posts: 586
on: Jul 28, 2018
The examine if open instruction ________.
 
  A) Is an input instruction only used for field devices with NC contacts
  B) Can only be assigned an input file address starting I:
  C) Has the following logic symbol (- -)
  D) Has the following logic symbol (-/-)

Question 2

The light source of a photoelectric sensor used in a long distance sensing application is ________.
 
  A) An incandescent lamp B) A light emitting diode
  C) A photo cell D) A laser


Related Topics

Need homework help now?

Ask unlimited questions for free

Ask a Question
Marked as best answer by a Subject Expert

sultansheikh

  • Sr. Member
  • ****
  • Posts: 335
Reply #1 on: Jul 28, 2018
Answer to Question 1

D

Answer to Question 2

D


vinney12

  • Member
  • Posts: 586
Reply 2 on: Jul 28, 2018
Great answer, keep it coming :)

tkempin

  • Member
  • Posts: 332
Reply 3 on: Yesterday
:D TYSM

« previous next »
 

Did you know?

The shortest mature adult human of whom there is independent evidence was Gul Mohammed in India. In 1990, he was measured in New Delhi and stood 22.5 inches tall.

Did you know?

The National Institutes of Health have supported research into acupuncture. This has shown that acupuncture significantly reduced pain associated with osteoarthritis of the knee, when used as a complement to conventional therapies.

Did you know?

Excessive alcohol use costs the country approximately $235 billion every year.

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.

Did you know?

The immune system needs 9.5 hours of sleep in total darkness to recharge completely.

The first step in field recovery involves surveying the site, sometimes with special equipment. The first step in field recovery involves surveying the site, sometimes with special equipment.
For Gulf War veterans, lack of social support in the field is related to postwar depression. The ... For Gulf War veterans, lack of social support in the field is related to postwar depression. The ...
A typical open-end wrench. Note the size difference on each end and that the head is angled 15 ... A typical open-end wrench. Note the size difference on each end and that the head is angled 15 ...
A series of two PET scans. A scan was done when the volunteer’s eyes were either open (left) or ... A series of two PET scans. A scan was done when the volunteer’s eyes were either open (left) or ...
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 ...
Guidelines for Field Triage of Injured Patients, Centers for Disease Control, 2011 Guidelines for Field Triage of Injured Patients, Centers for Disease Control, 2011
Video: Proteins

For a complete list of videos, visit our video library