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 133 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
:D TYSM

kthug

  • Member
  • Posts: 332
Reply 3 on: Yesterday
Gracias!

« previous next »
 

Did you know?

This year, an estimated 1.4 million Americans will have a new or recurrent heart attack.

Did you know?

Urine turns bright yellow if larger than normal amounts of certain substances are consumed; one of these substances is asparagus.

Did you know?

Nitroglycerin is used to alleviate various heart-related conditions, and it is also the chief component of dynamite (but mixed in a solid clay base to stabilize it).

Did you know?

The people with the highest levels of LDL are Mexican American males and non-Hispanic black females.

Did you know?

All adverse reactions are commonly charted in red ink in the patient's record and usually are noted on the front of the chart. Failure to follow correct documentation procedures may result in malpractice lawsuits.

Gunnar Kaasen and Balto, the lead dog on the last relay team of the 1925 serum run to Nome. Gunnar Kaasen and Balto, the lead dog on the last relay team of the 1925 serum run to Nome.
Direct Fist Percussion of Left Kidney Direct Fist Percussion of Left Kidney
A gasoline direct-injection (GDI) fuel rail and pump assembly with the electric pressure control ... A gasoline direct-injection (GDI) fuel rail and pump assembly with the electric pressure control ...
The direct product of phosphate hydrolysis from PEP is the enol form of pyruvate The direct product of phosphate hydrolysis from PEP is the enol form of pyruvate
Complete the following production chart and plot the points. Complete the following production chart and plot the points.
An educational institution has total direct labor and material costs of $1964 per student. Its ... An educational institution has total direct labor and material costs of $1964 per student. Its ...
Video: Transferring genes into plants Animation

For a complete list of videos, visit our video library