ISRO Technician-B Machinist Question Paper - 2016 (Set -1) with Answer Key

ISRO Technician-B Machinist Question Paper - 2016 (Set -1) with Answer Key

46) H7/k6 is a

Answer is:

Locational transition fit

47) The Youngs modulus of steel is

Answer is:

207 Gpa

48) Crater wear occurs mainly due to

Answer is:

Diffusion

49) A milling cutter of 80mm diameter has nine teeth. It is used to mill a 240mm long work piece. The run over is 4mm and the depth of cut is 5mm. A cutting speed of 12 meters/min. and feed per tooth of 0.15mm has been selected. Determine the milling time.

Answer is:

4.0 min

50) Formula to calculate the value of setover using tailstock setover method to turn taper from diameter D to diameter d to a certain length l of a job (Total length of the job is L) is

Answer is:

(D-d)L/(2l)