ISRO Draughtsman-B Mechanical Question Paper - 2019 (Set -1) with Answer Key

ISRO Draughtsman-B Mechanical Question Paper - 2019 (Set -1) with Answer Key

11) Construction lines are drawn by

Answer is:

Continous thin lines

12) In third angle projection, top view is drawn

Answer is:

Above X Y line

13) A leader line is usually

Answer is:

an inclined line with a short horizontal shoulder

14) Brass is a non-ferrous alloy of copper and

Answer is:

Zinc

15) The process of heating steel to a specified temperature and then cooling at a controlled rate, to soften the steel and remove internal stresses is called

Answer is:

Annealing

Explanation:

The annealing process is carried out by heating the steel above the critical range, soaking it for sufficient time to allow the necessary changes to occur, and cooling at a predetermined rate, usually very slowly, within the furnace.