ITI Machinist Lathe Machine Exam Questions - Set 04 - ObjectiveBooks
ITI Machinist Lathe Machine Exam Questions - Set 04

ITI Machinist Lathe Machine Exam Questions - Set 04

Practice Test: Question Set - 04

1. Trepanning operation is performed for
    (A) Blind holes
    (B) Big size holes
    (C) Small size holes
    (D) Step boring
2. Which one of the following statements is true with respect of the half nut?
    (A) It is detachable part of the spindle
    (B) It is an integral part of the spindle
    (C) It is an integral part of the apron
    (D) It is detachable part of the apron
3. Power feed is not possible in compound slide method of taper turning. Which one of the following defects can be noticeable on the tapered workpiece due to the above reason?
    (A) Chatter
    (B) Poor surface finish
    (C) Taper angle more than set
    (D) Taper angle less than set
4. One of the taper turning methods is by offsetting the tailstock. Which part of the tailstock is offset?
    (A) Body
    (B) Spindle
    (C) Base
    (D) Whole unit
5. Lead is the metal used for balancing weight during lathe face plate work. The reason for using lead is that it is very
    (A) Ductile
    (B) Heavy
    (C) Tough
    (D) Elastic
6. The size of the center drill is selected on the basis of the
    (A) Length of the workpiece
    (B) Material of the workpiece
    (C) Diameter of the workpiece
    (D) Operation to be performed on the workpiece
7. While thread cutting on a lathe by using single-point tool, the tool moves in a path called as
    (A) Epicycloid
    (B) Cycloid
    (C) Rake
    (D) Helix
8. Which one of the following materials for lathe cutting tools can be forged to any desired shape?
    (A) High speed steel
    (B) High carbon steel
    (C) Stellite
    (D) Tungsten carbide
9. A brass shaft is to be turned to a surface roughness Ra = 0.8, with high cutting speed. Which one of the following cutting tool material is most suitable?
    (A) High speed steel
    (B) High carbon steel
    (C) Low alloy steel
    (D) Cemented carbide
10. Which one of the following statements indicates the principle followed in turning taper by offsetting the tailstock?
    (A) The work axis is kept out of alignment with the lathe axis and the tool movement is parallel to lathe axis
    (B) The work axis is kept in line with the lathe axis and the tool is made to move at an angle to lathe axis
    (C) The live and dead centers are moved in opposite directions to keep the work axis out of alignment with the lathe axis
    (D) The lathe axis is kept out of alignment with the work axis and the tool is made to move at an angle to the lathe axis
11. The rollers used in the roller box turning tool holders are
    (A) Convex shaped
    (B) Concave shaped
    (C) Slightly tapered with smaller end towards work face
    (D) Slightly tapered with smaller end towards turret face
12. Which one of the following is not a part of a centre lathe?
    (A) Saddle
    (B) Feed rod
    (C) Arbor
    (D) Lead screw
13. For calculation of offset, we should consider
    (A) Total length of job
    (B) Length on which taper is required
    (C) Diameter of the job
    (D) Both 'A' and 'B'
14. When the offset is towards the operator, the large diameter of the taper will be at
    (A) Both ends
    (B) The centre
    (C) The headstock side
    (D) The tailstock side
15. The taper provided in the nose of the tailstock barrel is:
    (A) Morse taper
    (B) Jarno taper
    (C) Brown and Sharpe taper
    (D) Metric taper
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