17) The combined operation of drilling and counter sinking with one tool is known as
Answer is:
Centre drilling
Related ISRO Technician-B Fitter Question Paper - 2016 (Set - 4) with Answer Key
Answer is:
Cast iron
Explanation:
Cast iron is commonly used for machinery housings or base due to its damping characteristics. It is also known for holding its shape when it is subjected to contraction and expansion due to temperature fluctuations. Hence lathe bed is usually made up of cast iron.
