Welding never causes residual stresses in the work piece, which may result in distortion stress corrosion cracking, and reduced fatigue life. (true / false)

False.

Explanation:

Welding due to the thermal stress caused by the piece and large temperature changes can cause residual stresses in the material due to the efforts that are manifested in it. These efforts can cause microfractures, weakened areas and also a stress and changes in the crystalline structure that does not allow it to maintain the initial properties of the material and be prone to subsequent failures and corrosion.

the equation above shows how temperature f, measured in degrees fahrenheit, relates to a temperature c, measured in degrees celsius. based on the equation, which of the following must be true?

a temperature increase of 1 degree fahrenheit is equivalent to a temperature increase of

5

9

degree celsius.

a temperature increase of 1 degree celsius is equivalent to a temperature increase of 1.8 degrees fahrenheit.

a temperature increase of

5

9

degree fahrenheit is equivalent to a temperature increase of 1 degree celsius.

a) i only

b) ii only

c) iii only

d) i and ii only

answer:

yes that is right have a good day