ISRO Technician-B Machinist Question Paper - 2019 (Set -1) with Answer Key

ISRO Technician-B Machinist Question Paper - 2019 (Set -1) with Answer Key

11) A hole to be reamed on mild steel with a 10mm reamer. What will be the diameter of the drill for drilling the hole before reaming (undersize = 0.2mm & oversize ? 0.05mm)?

Answer is:

9.75

A hole to be reamed on mild steel with a 10mm reamer. What will be the diameter of the drill for drilling the hole before reaming (undersize = 0.2mm & oversize ? 0.05mm)?

12) Bronze is an alloy of

Answer is:

Copper & Tin

Explanation:

Bronze is an alloy consisting primarily of copper, commonly with about 12â€“12.5% tin and often with the addition of other metals (such as aluminium, manganese, nickel or zinc) and sometimes non-metals or metalloids such as arsenic, phosphorus or silicon.