Lathe Machine Tools Questions and Answers - Set 08 - ObjectiveBooks
Lathe Machine Tools Questions and Answers - Set 08

Lathe Machine Tools Questions and Answers - Set 08

Practice Test: Question Set - 08

1. The headstock of a lathe is situated at the
    (A) Right-hand end of the lathe bed
    (B) Left-hand end of the lathe bed
    (C) Middle of the lathe bed
    (D) Bottom of the lathe bed
2. Which one of the following is used only for finishing and maintaining correct form of thread?
    (A) Tap
    (B) Threading tool
    (C) Threading chaser
    (D) Tipped tool
3. Which one of the following shoulders is used on components to be threaded?
    (A) Square shoulder
    (B) Radius shoulder
    (C) Undercut shoulder
    (D) Beveled shoulder
4. What is the advantage of tailstock spindle having left handed threads?
    (A) Avoid advancement of barrel when rotated clockwise
    (B) Ensure that the barrel advances with clockwise movement of hand wheel
    (C) Reduce the tendency for excessive movement of the barrel
    (D) Avoid jamming of spindle and hand wheel
5. Centre drilling should be done at
    (A) Higher rpm with a slower feed
    (B) Higher rpm with a higher feed
    (C) Slower rpm with a higher feed
    (D) Slower rpm with a slower feed
6. Which among of the following methods can be used for cutting long and narrow external taper threads?
    (A) Tailstock offset method
    (B) Taper turning attachment method
    (C) Compound rest method
    (D) Either 'A' or 'B'
7. A 24-teeth gear is fixed at stud as driver gear. After completion of first start and before starting of second start, the driver gear should be turned
    (A) 24 teeth
    (B) 18 teeth
    (C) 12 teeth
    (D) 6 teeth
8. 'V' grooves of cast iron pulley have to be fine turned. Which one of the following work holding methods gives the highest concentricity?
    (A) Holding between a four-jaw chuck and a revolving center
    (B) Holding between a three-jaw chuck and supporting with a pipe center
    (C) Holding on a split mandrel and machining between centers
    (D) Holding on cone mandrel and machining between centers
9. A hole is drilled in a lathe by using a Dia 10 mm straight shank drill held in a drill chuck. After a short distance of the drill travel, it rotates along with the work. Which one of the following is the cause for this defect?
    (A) Chips getting clogged
    (B) Centre not aligned
    (C) Spotting at the center not done
    (D) Feeding by tailstock hand wheel is too slow
10. To enable a nut to fit properly on a bolt of square threads, the width of the internal square threading tool should be
    (A) Slightly more than the half pitch
    (B) Slightly less than the half pitch
    (C) Equal to the half pitch
    (D) Equal to the pitch
11. The graduations are marked at the base of the tailstock. To offset the body these graduations are given in
    (A) Degrees
    (B) Taper per foot
    (C) mm
    (D) Radians
12. A faceplate is held at
    (A) Headstock spindle
    (B) Tailstock
    (C) Tool post
    (D) Bed
13. While drilling in lathe, the drill is held in the
    (A) Headstock
    (B) Tailstock
    (C) Compound rest
    (D) Bed
14. A tool which is used to enlarge a previously drilled hole is known as
    (A) Facing tool
    (B) Turning tool
    (C) Form tool
    (D) Boring tool
15. Which among the following is not the feature of tailstock?
    (A) It holds the job
    (B) Drills and reamers can be mounted on it
    (C) Dead center is mounted on its spindle
    (D) It can be used for taper turning by offset method
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