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

Author Question: Direct digital controls (DDC) operate by A) turning relay coils on or off to complete circuits ... (Read 122 times)

Kthamas

  • Hero Member
  • *****
  • Posts: 546
on: Jul 26, 2018
Direct digital controls (DDC) operate by
 
  A) turning relay coils on or off to complete circuits
  B) processing electronic signals with a microprocessor
  C) providing a varying DC voltage in response to monitored conditions
  D) providing a modulating air pressure in response to monitored conditions

Question 2

Types of control systems include
 
  A) pneumatic, electromechanical, electronic, and DDC
  B) pneumatic, hydraulic, and electro-mechanical
  C) line voltage, low voltage, and communicating
  D) voltage, current, and milliamp


Related Topics

Need homework help now?

Ask unlimited questions for free

Ask a Question
Marked as best answer by a Subject Expert

Jossy

  • Sr. Member
  • ****
  • Posts: 336
Reply #1 on: Jul 26, 2018
Answer to Question 1

B

Answer to Question 2

A


Kthamas

  • Member
  • Posts: 546
Reply 2 on: Jul 26, 2018
Wow, this really help

Liamb2179

  • Member
  • Posts: 365
Reply 3 on: Yesterday
Great answer, keep it coming :)

« previous next »
 

Did you know?

Though the United States has largely rejected the metric system, it is used for currency, as in 100 pennies = 1 dollar. Previously, the British currency system was used, with measurements such as 12 pence to the shilling, and 20 shillings to the pound.

Did you know?

Your chance of developing a kidney stone is 1 in 10. In recent years, approximately 3.7 million people in the United States were diagnosed with a kidney disease.

Did you know?

Cytomegalovirus affects nearly the same amount of newborns every year as Down syndrome.

Did you know?

Although not all of the following muscle groups are commonly used, intramuscular injections may be given into the abdominals, biceps, calves, deltoids, gluteals, laterals, pectorals, quadriceps, trapezoids, and triceps.

Did you know?

Bacteria have flourished on the earth for over three billion years. They were the first life forms on the planet.

Humans turning a horse loose so that it can run Humans turning a horse loose so that it can run
Apply direct pressure to the patient’s wound. Apply direct pressure to the patient’s wound.
How to complete the square How to complete the square
Digital Planet Tomorrow's Technology and You, Complete, 10E Digital Planet Tomorrow's Technology and You, Complete, 10E
Neural Circuits: Reverberating & Parallel After-Discharge Neural Circuits: Reverberating & Parallel After-Discharge
Digital illustration of a fish that was believed to have become extinct during the Cretaceous Period Digital illustration of a fish that was believed to have become extinct during the Cretaceous Period
Video: Muscle cell structures - actin, myosin and titin filaments

For a complete list of videos, visit our video library