« 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 119 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?

There are actually 60 minerals, 16 vitamins, 12 essential amino acids, and three essential fatty acids that your body needs every day.

Did you know?

Serum cholesterol testing in adults is recommended every 1 to 5 years. People with diabetes and a family history of high cholesterol should be tested even more frequently.

Did you know?

The use of salicylates dates back 2,500 years to Hippocrates's recommendation of willow bark (from which a salicylate is derived) as an aid to the pains of childbirth. However, overdosage of salicylates can harm body fluids, electrolytes, the CNS, the GI tract, the ears, the lungs, the blood, the liver, and the kidneys and cause coma or death.

Did you know?

Bacteria have flourished on the earth for over three billion years. They were the first life forms on the planet.

Did you know?

Sperm cells are so tiny that 400 to 500 million (400,000,000–500,000,000) of them fit onto 1 tsp.

Endocarditis. The human heart has been sectioned to reveal the left ventricle and origin of the aort Endocarditis. The human heart has been sectioned to reveal the left ventricle and origin of the aort
Valve replacement surgery. Valve replacement surgery.
Parabola Real World Example Parabola Real World Example
If the thermostat has a jiggle valve, it should be placed toward the top to allow air to escape. If ... If the thermostat has a jiggle valve, it should be placed toward the top to allow air to escape. If ...
Checking the fuel pressure using a fuelpressure gauge connected to the Schrader valve. Checking the fuel pressure using a fuelpressure gauge connected to the Schrader valve.
The purpose of mitosis is to take diploid cells and make two identical clones. A shows a simplified The purpose of mitosis is to take diploid cells and make two identical clones. A shows a simplified
Video: Muscle cell structures - actin, myosin and titin filaments

For a complete list of videos, visit our video library