17) Which of the following is an example of non-fusion welding?
Answer is:
Brazing
Related ISRO Technician-B Fitter Question Paper - 2017 (Set - 1) with Answer Key
Answer is:
Martensite
Explanation:
If the hot steel is cooled rapidly the austenite changes into a new structure called ‘MARTENSITE’. This structure is very fine grained, very hard and magnetic. It is extremely wear-resistant and can cut other metals.