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

Author Question: The typical start up sequence for a hot surface ignition system is: A) Combustion blower ... (Read 32 times)

mikaylakyoung

  • Hero Member
  • *****
  • Posts: 531
on: Jul 24, 2018
The typical start up sequence for a hot surface ignition system is:
 
  A) Combustion blower prepurge, igniter energized after a delay, gas valve energized after a delay, flames sensed, indoor blower energized after time delay.
  B) Combustion blower, indoor blower, igniter, and gas valve all energized simultaneously.
  C) Gas valve and igniter energized, flames sensed, combustion blower and indoor blower energized after time delay.
  D) Combustion blower energized, igniter energized and gas valve energized, flames sensed, indoor blower energized after time delay.

Question 2

A big reason that communicating systems improve efficiency is:
 
  A) They monitor and correct power factor.
  B) They can make intelligent decisions based on actual operating conditions.
  C) They switch faster than relay systems.
  D) Relays consume large amounts of power in conventional systems.


Related Topics

Need homework help now?

Ask unlimited questions for free

Ask a Question
Marked as best answer by a Subject Expert

atrochim

  • Sr. Member
  • ****
  • Posts: 331
Reply #1 on: Jul 24, 2018
Answer to Question 1

A

Answer to Question 2

B


mikaylakyoung

  • Hero Member
  • *****
  • Posts: 531
Reply #2 on: Jul 24, 2018
Thank you!


atrochim

  • Sr. Member
  • ****
  • Posts: 331
Reply #3 on: Jul 24, 2018
Always glad to help...


« previous next »
 

Did you know?

Approximately one in four people diagnosed with diabetes will develop foot problems. Of these, about one-third will require lower extremity amputation.

Did you know?

There are more sensory neurons in the tongue than in any other part of the body.

Did you know?

Each year in the United States, there are approximately six million pregnancies. This means that at any one time, about 4% of women in the United States are pregnant.

Did you know?

The most dangerous mercury compound, dimethyl mercury, is so toxic that even a few microliters spilled on the skin can cause death. Mercury has been shown to accumulate in higher amounts in the following types of fish than other types: swordfish, shark, mackerel, tilefish, crab, and tuna.

Did you know?

The liver is the only organ that has the ability to regenerate itself after certain types of damage. As much as 25% of the liver can be removed, and it will still regenerate back to its original shape and size. However, the liver cannot regenerate after severe damage caused by alcohol.

A vertebrate digestive system, as shown in the human. A vertebrate digestive system, as shown in the human.
How the immune system fights a viral infection How the immune system fights a viral infection
Procedures for Diagnostic Tests Related to the Musculoskeletal system Procedures for Diagnostic Tests Related to the Musculoskeletal system
Modification of neural transmission in the central nervous system: (a) normal transmission; (b) ... Modification of neural transmission in the central nervous system: (a) normal transmission; (b) ...
A typical pop tester used to check the spray pattern of a diesel engine injector. A typical pop tester used to check the spray pattern of a diesel engine injector.
To prevent ignition and fuel-injection operation while the engine is being cranked, remove both the ... To prevent ignition and fuel-injection operation while the engine is being cranked, remove both the ...
Video: Central Nervous System Animation

For a complete list of videos, visit our video library