Counter boring is done for

23) Quick return mechanism is employed in

Answer is:

Shaping machine

Explanation:

24) A point to point control system is suitable only for one of the following operations

Answer is:

Drilling

Explanation:

25) While using quick return mechanism in shaping machine the cutting stroke moves slow & return stroke moves fast. What is the ratio between cutting stroke & return stroke

Answer is:

3:2

Explanation:

26) An irregular shaped work piece is turned on a lathe. Which one of the following work holding accessory is used?

Answer is:

Face plate

Explanation:

Faceplates are used to hold work that is too large or of such a shape that it cannot be held in a chuck or between centers. Faceplates are equipped with several slots to permit the use of bolts to secure the work, so that the axis of the work-piece may be aligned with the lathe centers. When work is mounted off – center, a counterbalance should be fastened to the faceplate to prevent imbalance and the resultant vibrations when the lathe is in operation.

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Counter boring is done for

Accommodate socket head screws

For More ISRO Technician-B Machinist Question Paper - 2015 (Set -1) with Answer Key

Related ISRO Technician-B Machinist Question Paper - 2015 (Set -1) with Answer Key

23) Quick return mechanism is employed in

Shaping machine

24) A point to point control system is suitable only for one of the following operations

Drilling

25) While using quick return mechanism in shaping machine the cutting stroke moves slow & return stroke moves fast. What is the ratio between cutting stroke & return stroke

3:2

26) An irregular shaped work piece is turned on a lathe. Which one of the following work holding accessory is used?

Face plate

For More ISRO Technician-B Machinist Question Paper - 2015 (Set -1) with Answer Key