Author Question: Why do direct spark ignition furnaces and hot surface ignition furnaces require redundant gas ... (Read 81 times)

sheilaspns

  • Hero Member
  • *****
  • Posts: 567
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
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
Both answers were spot on, thank you once again



sylvia

  • Sr. Member
  • ****
  • Posts: 331

 

Did you know?

In 2012, nearly 24 milliion Americans, aged 12 and older, had abused an illicit drug, according to the National Institute on Drug Abuse (NIDA).

Did you know?

Before a vaccine is licensed in the USA, the Food and Drug Administration (FDA) reviews it for safety and effectiveness. The CDC then reviews all studies again, as well as the American Academy of Pediatrics and the American Academy of Family Physicians. Every lot of vaccine is tested before administration to the public, and the FDA regularly inspects vaccine manufacturers' facilities.

Did you know?

Green tea is able to stop the scent of garlic or onion from causing bad breath.

Did you know?

The first-known contraceptive was crocodile dung, used in Egypt in 2000 BC. Condoms were also reportedly used, made of animal bladders or intestines.

Did you know?

Approximately one in three babies in the United States is now delivered by cesarean section. The number of cesarean sections in the United States has risen 46% since 1996.

For a complete list of videos, visit our video library