« previous next »

Author Question: Why is the contact surface in relays and contactors coated with a special coating of very conductive ... (Read 70 times)

armygirl

  • Hero Member
  • *****
  • Posts: 556
on: Jul 26, 2018
Why is the contact surface in relays and contactors coated with a special coating of very conductive material?
 
  What will be an ideal response?

Question 2

How can a service technician learn what problems a communicating system has been experiencing?
 
  What will be an ideal response?


softEldritch

  • Sr. Member
  • ****
  • Posts: 334
Reply #1 on: Jul 26, 2018
Answer to Question 1

This coating is very thin but effective in preventing the contacts from becoming quickly damaged from the momentary arc as they open and close. This arc would normally cause the contacts to weld themselves together.

Answer to Question 2

Go to the service screens on the communicating thermostat and read the fault history


Related Topics

Need homework help now?

Ask unlimited questions for free

Ask a Question
« previous next »
 

Did you know?

Asthma is the most common chronic childhood disease in the world. Most children who develop asthma have symptoms before they are 5 years old.

Did you know?

Long-term mental and physical effects from substance abuse include: paranoia, psychosis, immune deficiencies, and organ damage.

Did you know?

The average adult has about 21 square feet of skin.

Did you know?

For pediatric patients, intravenous fluids are the most commonly cited products involved in medication errors that are reported to the USP.

Did you know?

The tallest man ever known was Robert Wadlow, an American, who reached the height of 8 feet 11 inches. He died at age 26 years from an infection caused by the immense weight of his body (491 pounds) and the stress on his leg bones and muscles.

Surface magnetic field of SU Aur (a young star of T Tauri type), reconstructed by means of Zeeman-Do Surface magnetic field of SU Aur (a young star of T Tauri type), reconstructed by means of Zeeman-Do
For ice massage, ice is frozen in a cylindrical container or a paper cup (A). The top half of the cu For ice massage, ice is frozen in a cylindrical container or a paper cup (A). The top half of the cu
A multiport fuel injector. Notice that the fuel flows straight through and does not come in contact ... A multiport fuel injector. Notice that the fuel flows straight through and does not come in contact ...
Surface Fronts and Upper-Level Patterns: Cold Fronts and the Formation of Upper-Level Troughs Surface Fronts and Upper-Level Patterns: Cold Fronts and the Formation of Upper-Level Troughs
Binding of a chylomicron to lipoprotein lipase on the inner surface of a capillary Binding of a chylomicron to lipoprotein lipase on the inner surface of a capillary
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: A timeline of the teeth (Explained - No Audio)

For a complete list of videos, visit our video library