ISRO Technician-B Fitter Question Paper - 2017 (Set

ISRO Technician-B Fitter Question Paper - 2017 (Set - 1) with Answer Key

21) Quenching transforms Austenite to

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.

22) In forging a har die is used for

Answer is:

Cutting heavy hot metal

23) To true a job precisely in a 4 jaw chuck, the instrument used is a

Answer is:

Dial test indicator with magnetic base

24) Which of the following is not used for turning a taper in a lathe?

Answer is:

25) In a conventional lathe tool post is mounted directly on the

Answer is:

ISRO Technician-B Fitter Question Paper - 2017 (Set - 1) with Answer Key

21) Quenching transforms Austenite to

Martensite

22) In forging a har die is used for

Cutting heavy hot metal

23) To true a job precisely in a 4 jaw chuck, the instrument used is a

Dial test indicator with magnetic base

24) Which of the following is not used for turning a taper in a lathe?

Top slide rotation method

25) In a conventional lathe tool post is mounted directly on the

Saddle