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

61) The point angle for a standard drill is

Answer is:

118 degree

Explanation:

For general purpose use point angle of twist drill is 118 Degree.

62) The process of enlarging the end of a hole to an even depth for housing the socket screw head is

Answer is:

counter boring

Explanation:

The process of enlarging the end of a hole to an even depth for housing the socket screw head is called as counter boring.

63) The basic functions of cutting fluids are

Answer is:

Cooling and flushing chips away from the cutting tool

64) The part that belongs to the head stock of the lathe is

Answer is:

Main spindle

65) A jig is a special device

Answer is:

Which locates and also guides the cutting tool

Explanation:

A jig is a work-holding device that holds, supports, and locates the workpiece and guides the one or more tools to perform a specific operation.

A fixture is a work-holding device that only holds, supports, and locates the workpiece, but does not guide the tools to perform a specific operation.