Jigs and Fixtures MCQ - Machinist(Set-1) with Answers

6) Which among the following is the purpose for providing bushings in a drill jig ?

Answer is:

For locating accurately and guiding the drill for precise drilling operation

Explanation:

Bush is used in drill jig for locating accurately and guiding the drill for precise drilling operation.

Which among the following is the purpose for providing bushings in a drill jig ?

7) Drill jig bushings are generally made of

Answer is:

Tool steel

Explanation:

Drill Jig bushings are generally made of tool steel

8) Drill jig bushings are normally hardened to

Answer is:

Ensure prolonged life without wear and tear so as to guide the tool accurately

Explanation:

Drill jig bushings are normally hardened to ensure prolonged life without wear and tear so as to guide the tool accurately.

9) Plain drill jig bushings are generally secured in the body of jig so that the bushings should not

Answer is:

Vibrate, rotate and be withdrawn while in operation

Explanation:

Plain drill jig bushings are generally secured in the body of jig so that the bushings should not vibrate, rotate and be withdrawn while in operation.

10) Fixed renewable bushings are used when

Answer is:

One operation is to be performed in each hole but several bushings must be used during the life of the jig

Explanation:

Fixed renewable bushings are used when one operation is to be performed in each hole but several bushings must be used during the life of the jig.