1. A stock has a run out. How much we will lose the jaw opposite to the high spot.
(A) Equal to run out
(B) Half
(C) One-third
(D) One-fourth
2. Result of “off center” in job may cause:
(A) Vibration
(B) Part rejection
(C) All are correct
(D) Damage to tool
3. Before turning, how will you find the centre of job.
(A) By combination set
(B) By drawing diagonal lines
(C) Both are correct
(D) Neither a or b
4. While checking alignment of centers how do you adjust.
(A) By dead center
(B) By live centre
(C) By set over screw
(D) None of these
5. While drilling cast iron you will apply following to drill.
(A) Lard
(B) Nothing
(C) Cutting compound
(D) Oil
6. Cutting edge of the tool should not be:
(A) At 5° above the center
(B) Below the center of job
(C) Exactly on centre
(D) None of these
7. Drilling should be done before:
(A) Boring
(B) Tapping
(C) Reaming
(D) All of these
8. How chattering can be eliminated during boring operation.
(A) Increase boring bar overhang
(B) Increase nose radius on tool
(C) Increase spindle speed
(D) Increase feed
9. Thread are formed on angle of:
(A) 15°
(B) 30°
(C) 60°
(D) 75°
10. Before reaming, how much under size bore should be made.
(A) 1/8
(B) 1/64
(C) 1/16
(D) 1/28