« previous next »

Author Question: What is a redundant gas valve? A) a gas valve that has no real purpose B) a gas valve that was ... (Read 121 times)

berenicecastro

  • Hero Member
  • *****
  • Posts: 581
on: Jul 26, 2018
What is a redundant gas valve?
 
  A) a gas valve that has no real purpose
  B) a gas valve that was once necessary on older furnaces but is no longer used
  C) a gas valve that is used in case the main valve quits working
  D) a gas valve with two valves mechanically in series

Question 2

What could cause the tungsten electrode to turn gray or blue?
 
  A) The operator had only 1/4 to 1 inch stick out, and that is not enough to prevent electrode burning.
  B) Not enough electrodes stick out.
  C) Answers A and B are both correct.
  D) Not enough post flow
  E) Too much post flow


aprice35067

  • Sr. Member
  • ****
  • Posts: 337
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

berenicecastro

  • Hero Member
  • *****
  • Posts: 581
Reply #2 on: Jul 26, 2018
Thank you!


aprice35067

  • Sr. Member
  • ****
  • Posts: 337
Reply #3 on: Jul 26, 2018
Always glad to help...


« previous next »
 

Did you know?

The first monoclonal antibodies were made exclusively from mouse cells. Some are now fully human, which means they are likely to be safer and may be more effective than older monoclonal antibodies.

Did you know?

Glaucoma is a leading cause of blindness. As of yet, there is no cure. Everyone is at risk, and there may be no warning signs. It is six to eight times more common in African Americans than in whites. The best and most effective way to detect glaucoma is to receive a dilated eye examination.

Did you know?

In 1835 it was discovered that a disease of silkworms known as muscardine could be transferred from one silkworm to another, and was caused by a fungus.

Did you know?

According to the CDC, approximately 31.7% of the U.S. population has high low-density lipoprotein (LDL) or "bad cholesterol" levels.

Did you know?

A strange skin disease referred to as Morgellons has occurred in the southern United States and in California. Symptoms include slowly healing sores, joint pain, persistent fatigue, and a sensation of things crawling through the skin. Another symptom is strange-looking, threadlike extrusions coming out of the skin.

The schematic of a variable valve timing control circuit, showing that battery power (+) is being ... The schematic of a variable valve timing control circuit, showing that battery power (+) is being ...
If the valve clearance (lash) is not correct, loosen the retaining nut and turn the valve adjusting ... If the valve clearance (lash) is not correct, loosen the retaining nut and turn the valve adjusting ...
An EGR valve position sensor on top of an EGR valve. An EGR valve position sensor on top of an EGR valve.
Air flows through the PCV valve during idle, cruising, and light-load conditions. Air flows through the PCV valve during idle, cruising, and light-load conditions.
How to use the discriminant to determine the value of k in a quadratic with one real root How to use the discriminant to determine the value of k in a quadratic with one real root
Prove that each of the following real functions f has a discontinuity. For each function, ... Prove that each of the following real functions f has a discontinuity. For each function, ...
Video: Retina

For a complete list of videos, visit our video library