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

Author Question: Hot-surface ignition units: A) Operate for only a few minutes per day. B) Are standard ignition ... (Read 66 times)

anjilletteb

  • Hero Member
  • *****
  • Posts: 569
on: Jul 27, 2018
Hot-surface ignition units:
 
  A) Operate for only a few minutes per day. B) Are standard ignition systems.
  C) Substantially increase an electric bill. D) Are powered by 220 V.

Question 2

How does the flame rod sense the flames in a flame rectification circuit?
 
  A) The flame changes the AC voltage to pulsed DC current.
  B) The resistance of the flame rod changes when heated by the flame.
  C) The flame rod expands from being heated, making a mechanical switch at its base.
  D) The flame rod is made of a semiconductor material that acts as a silicon controlled rectifier when it is hot.


Related Topics

Need homework help now?

Ask unlimited questions for free

Ask a Question
Marked as best answer by a Subject Expert

Juro

  • Sr. Member
  • ****
  • Posts: 337
Reply #1 on: Jul 27, 2018
Answer to Question 1

A

Answer to Question 2

A


anjilletteb

  • Member
  • Posts: 569
Reply 2 on: Jul 27, 2018
Excellent

mcabuhat

  • Member
  • Posts: 344
Reply 3 on: Yesterday
Thanks for the timely response, appreciate it

« previous next »
 

Did you know?

Coca-Cola originally used coca leaves and caffeine from the African kola nut. It was advertised as a therapeutic agent and "pickerupper." Eventually, its formulation was changed, and the coca leaves were removed because of the effects of regulation on cocaine-related products.

Did you know?

Every flu season is different, and even healthy people can get extremely sick from the flu, as well as spread it to others. The flu season can begin as early as October and last as late as May. Every person over six months of age should get an annual flu vaccine. The vaccine cannot cause you to get influenza, but in some seasons, may not be completely able to prevent you from acquiring influenza due to changes in causative viruses. The viruses in the flu shot are killed—there is no way they can give you the flu. Minor side effects include soreness, redness, or swelling where the shot was given. It is possible to develop a slight fever, and body aches, but these are simply signs that the body is responding to the vaccine and making itself ready to fight off the influenza virus should you come in contact with it.

Did you know?

The top five reasons that children stay home from school are as follows: colds, stomach flu (gastroenteritis), ear infection (otitis media), pink eye (conjunctivitis), and sore throat.

Did you know?

Most fungi that pathogenically affect humans live in soil. If a person is not healthy, has an open wound, or is immunocompromised, a fungal infection can be very aggressive.

Did you know?

Chronic necrotizing aspergillosis has a slowly progressive process that, unlike invasive aspergillosis, does not spread to other organ systems or the blood vessels. It most often affects middle-aged and elderly individuals, spreading to surrounding tissue in the lungs. The disease often does not respond to conventionally successful treatments, and requires individualized therapies in order to keep it from becoming life-threatening.

Coral reefs are influenced by sea surface temperatures. Coral reefs are influenced by sea surface temperatures.
The Inner Surface of Human Lung The Inner Surface of Human Lung
Standard Medical Record and Types of Reports Found in Record Standard Medical Record and Types of Reports Found in Record
Friction significantly influences airflow near Earth’s surface, but its effect is negligible at ... Friction significantly influences airflow near Earth’s surface, but its effect is negligible at ...
How to sketch a quadratic equation that is in standard form (Question 1) How to sketch a quadratic equation that is in standard form (Question 1)
The Standard Rain Gauge The Standard Rain Gauge
Video: Hip Animation

For a complete list of videos, visit our video library