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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