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 64 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
Thanks for the timely response, appreciate it

irishcancer18

  • Member
  • Posts: 310
Reply 3 on: Yesterday
:D TYSM

« previous next »
 

Did you know?

Vital signs (blood pressure, temperature, pulse rate, respiration rate) should be taken before any drug administration. Patients should be informed not to use tobacco or caffeine at least 30 minutes before their appointment.

Did you know?

More than nineteen million Americans carry the factor V gene that causes blood clots, pulmonary embolism, and heart disease.

Did you know?

Less than one of every three adults with high LDL cholesterol has the condition under control. Only 48.1% with the condition are being treated for it.

Did you know?

As many as 20% of Americans have been infected by the fungus known as Histoplasmosis. While most people are asymptomatic or only have slight symptoms, infection can progress to a rapid and potentially fatal superinfection.

Did you know?

Immunoglobulin injections may give short-term protection against, or reduce severity of certain diseases. They help people who have an inherited problem making their own antibodies, or those who are having certain types of cancer treatments.

The Sun as it appears from the surface of Earth during the middle of the day The Sun as it appears from the surface of Earth during the middle of the day
Juglans nigra (Black Walnut tree) lower leaf surface Juglans nigra (Black Walnut tree) lower leaf surface
The Venusian Surface The Venusian Surface
Galaxies Forming by Combining Smaller Units Galaxies Forming by Combining Smaller Units
Me Studying and 5 Minutes Later Me Studying and 5 Minutes Later
A satellite that is in a circular orbit 230 km above the surface of the planet Zeeman-474 has ... A satellite that is in a circular orbit 230 km above the surface of the planet Zeeman-474 has ...
Video: Semidiscontinuous DNA replication

For a complete list of videos, visit our video library