« previous next »

Author Question: Why do direct spark ignition furnaces and hot surface ignition furnaces require redundant gas ... (Read 94 times)

sheilaspns

  • Hero Member
  • *****
  • Posts: 567
on: Jul 26, 2018
Why do direct spark ignition furnaces and hot surface ignition furnaces require redundant gas valves?
 
  A) in case one fails to open, the other will B) so that the unit will not overheat
  C) because they require more fuel D) for safety since there is no pilot safety solenoid

Question 2

Which of the following statements applies when heating a bearing with a torch during the removal process?
 
  a. Never use a propane torch.
  b. Use an aluminum ring for a heat sink.
  c. Cool the bearing with a wet cloth as soon as it is removed.
  d. Do not reuse a bearing removed this way.


sylvia

  • Sr. Member
  • ****
  • Posts: 331
Reply #1 on: Jul 26, 2018
Answer to Question 1

D

Answer to Question 2

d


Related Topics

Need homework help now?

Ask unlimited questions for free

Ask a Question

sheilaspns

  • Hero Member
  • *****
  • Posts: 567
Reply #2 on: Jul 26, 2018
Both answers were spot on, thank you once again


sylvia

  • Sr. Member
  • ****
  • Posts: 331
Reply #3 on: Jul 26, 2018
Great! Please up vote :D


« previous next »
 

Did you know?

All adults should have their cholesterol levels checked once every 5 years. During 2009–2010, 69.4% of Americans age 20 and older reported having their cholesterol checked within the last five years.

Did you know?

In the United States, an estimated 50 million unnecessary antibiotics are prescribed for viral respiratory infections.

Did you know?

For about 100 years, scientists thought that peptic ulcers were caused by stress, spicy food, and alcohol. Later, researchers added stomach acid to the list of causes and began treating ulcers with antacids. Now it is known that peptic ulcers are predominantly caused by Helicobacter pylori, a spiral-shaped bacterium that normally exist in the stomach.

Did you know?

There are approximately 3 million unintended pregnancies in the United States each year.

Did you know?

Adults are resistant to the bacterium that causes Botulism. These bacteria thrive in honey – therefore, honey should never be given to infants since their immune systems are not yet resistant.

In 2013, Americans learned that the federal government massively surveys their phone calls and e-mai In 2013, Americans learned that the federal government massively surveys their phone calls and e-mai
Using a vacuum hose and a test light to ground one cylinder at a time on a distributorless ignition ... Using a vacuum hose and a test light to ground one cylinder at a time on a distributorless ignition ...
Schematic of a Ford TFI-IV ignition system. The SPOUT connector is unplugged when ignition timing ... Schematic of a Ford TFI-IV ignition system. The SPOUT connector is unplugged when ignition timing ...
Apply direct pressure along upper trapezius, turning the head to access the area. Use your thumb to ... Apply direct pressure along upper trapezius, turning the head to access the area. Use your thumb to ...
Variations in the Ocean’s Surface Temperature and Salinity with Latitude Variations in the Ocean’s Surface Temperature and Salinity with Latitude
Transverse section and anterior surface of medulla oblongata Transverse section and anterior surface of medulla oblongata
Video: Mechanism of enzyme action

For a complete list of videos, visit our video library