Practice Test: Question Set - 03
1. When threading a blind hole, the third (finisher) tap is used
- (A) To thread the hole with full threads up to the bottom
- (B) To start the threads
- (C) After the first (rougher) tap
- (D) To form the threads easily
2. A grinding wheel marked with 'C' is made with the abrasive
- (A) Aluminium oxide
- (B) Silicon carbide
- (C) Diamond
- (D) Corundum
3. Taps are re-sharpened by grinding
- (A) Flutes
- (B) Threads
- (C) Diameter
- (D) Relief
4. A die is
- (A) External thread cutting tool
- (B) Internal thread cutting tool
- (C) Square thread cutting tool
- (D) Acme thread cutting tool
5. Which of the following reamers is particularly suitable for reaming holes having keyway grooves?
- (A) Straight fluted reamer
- (B) Helical fluted reamer
- (C) Taper reamer
- (D) Pilot reamer
6. It is commonly observed that the face of a grinding wheel becomes shiny and smooth or glazed after some use due to one of the following reasons. Choose the correct answer.
- (A) Grade of wheel is too hard
- (B) Abrasive of wheel is not suitable for the purpose
- (C) Grain size is too coarse
- (D) Structure of the wheel is too open
7. You have to select a grinding wheel with suitable abrasive to grind glass. What is the type of abrasive you will select?
- (A) Diamond
- (B) Emery
- (C) Quartz
- (D) Silicon carbide
8. Which angle of counter sink drill you will select for seating counter sink type A (IS : 3406-1986)?
- (A) Counter sink drill 75°
- (B) Counter sink drill 80°
- (C) Counter sink drill 90°
- (D) Counter sink drill 120°
9. Cemented carbide is capable of cutting speed:
- (A) 3 to 4 times greater than HSS cutting tools
- (B) 5 to 8 times greater than HSS cutting tools
- (C) 8 to 10 times greater than HSS cutting tools
- (D) 10 to 15 times greater than HSS cutting tools
10. Rake angle of a lathe tool can be:
- (A) Positive only
- (B) Negative only
- (C) Zero only
- (D) Any one of positive, negative or zero
11. Which one of the following is used to rectify damaged or rusted threads?
- (A) Die nut
- (B) Circular split die
- (C) Two-piece die
- (D) Die plate
12. The cutting action of a file depends upon
- (A) The kind of cut and spacing of teeth
- (B) Arrangement of teeth on the file
- (C) Size and shape of the file
- (D) All of the above
13. A double cut file is used for filing on
- (A) Wood
- (B) Hard board
- (C) Leather
- (D) Steel
14. The new hacksaw blade should not be used in the blind saw cut made by old blade because
- (A) The space is not enough to run the blade
- (B) The blade is costly
- (C) The new blade has sharp teeth
- (D) None of the above
15. Spot-facing is done to
- (A) Deburr the mouth of the drilled hole
- (B) Make surface flat so that bolt head can take proper seat on the surface
- (C) Give fine finish to the drilled hole
- (D) Enlarge the existing hole
Next Tests: