Multiple Choice Questions on Lathe Machine - Set 03 - ObjectiveBooks

Multiple Choice Questions on Lathe Machine - Set 03

Practice Test: Question Set - 03

1. A shaft of 50 mm has to be rough turned to Dia 42 mm in one pass. When will you check to ensure the set depth of cut is correct?
    (A) After the tool traveled the full length
    (B) After the tool traveled half way
    (C) Just after the cut is taken at the tailstock end
    (D) After the tool has traveled a distance more than the angular shoulder

2. A travelling steady is fixed on the saddle of a lathe. What is the function of this steady rest?
    (A) To prevent bending of long shafts due to cutting force
    (B) To avoid load on the lathe centers while turning long shafts
    (C) To reduce the load on the cutting tool while turning
    (D) To ensure to turn at higher cutting speeds than recommend

3. Which one of the following is used to hold cylindrical rough casting for turning?
    (A) Three-jaw chuck
    (B) Four-jaw chuck
    (C) Collet chuck
    (D) Magnetic chuck

4. Which one of the following tool angle is provided to avoid rubbing of the body of the tool with the workpiece?
    (A) Rake angle
    (B) Helix angle
    (C) Clearance angle
    (D) None of the above

5. Which one of the following is used to hold the workpiece for machining diameter concentric to its hole / bore?
    (A) Face plate
    (B) Mandrel
    (C) Three-jaw chuck
    (D) Four-jaw chuck

6. Lathe bed is made of
    (A) Mild steel
    (B) Cast iron
    (C) High carbon steel
    (D) High alloy steel

7. The size of three-jaw chuck is specified by
    (A) The size of each jaw
    (B) The thickness of each jaw
    (C) The diameter of the body of the chuck
    (D) Width of the body of the chuck

8. Follower steady is fixed on the
    (A) Tailstock
    (B) Bed
    (C) Saddle
    (D) Headstock

9. Which one of the following is the remedial measure to prevent the tool cutting edge chipping off?
    (A) Increase the feed rate
    (B) Reduce cutting speed
    (C) Decreases nose radios
    (D) Use negative top rake

10. As the diameter of the workpiece decreases, the spindle speed (for the same cutting speed)
    (A) Increases
    (B) Decreases
    (C) Remains the same
    (D) None of the above

11. A Tumbler gear unit consists of
    (A) One gear
    (B) Two gears
    (C) Three Gears
    (D) Four gears

12. During machining operation using face plate, the angle plate is held on the
    (A) Face plate
    (B) Carriage
    (C) Tailstock
    (D) Bed

13. Which among the following is the cause for incorrect pitch of thread during thread cutting with single point tool?
    (A) Incorrect selection of change gears
    (B) Lead screw worn out
    (C) Half nut worn out
    (D) Any of the above

14. Which among the following in respect of thread cutting is NOT correct?
    (A) Threads can be cut on a lathe by using simple gear train arrangement only
    (B) The 127 teeth gear is used as driven gear for cutting metric threads on a lathe having lead screw in TPI
    (C) The 63 teeth gear is used as a driver for cutting British threads on a lathe having metric lead screw
    (D) The teeth of the driver and driven are based on the pitch of thread to be cut and the pitch of thread on the lead screw

15. Which among the following statements in respect of the lathe cutting tools is correct?
    (A) Red hotness temperature is higher for high carbon steel tool than that of carbide tool
    (B) The property of tool chipping off with vibration is more for cemented carbide tools than that of HSS tools
    (C) Ceramic tool has more resistance to shock as compared to HSS tools
    (D) HSS tool can work at more spindle speed and feed than cemented carbide tool

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