1. Which one of the following is not a part of the centre lathe?
(a) Saddle
(b) Feed rod
(c) Arbor
(d) Lead screw
2. 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
3. The horizontal feed, cross feed and screw cutting movement in a lathe is
controlled by
(a) Headstock
(b)Tailstock
(c) Cross-slide
(d) Apron
4. A face plate is held at
(a) Headstock spindle
(b) Tailstock
(c) Tool post
(d) Bed
5. Tumbler gear quadrant is used for
(a) Increasing the speed of the spindle
(b) Decreasing the speed of the spindle
(c) Changing the direction of rotation of the lead screw
(d) Changing the direction of the spindle
6. In a gap bed lathe, the gap is provided
(a) Just below the nose of the headstock spindle
(b) Just below the spindle of the tailstock
(c) In the middle of the bed
(d) Anywhere in the bed
7. While drilling in lathe, the drill is held in the
(a) Headstock
(b) Tailstock
(c) Compound rest
(d) Bed
8. Back-gear mechanism is provided in cone pulley headstock to
(a) Reduce the speed of spindle
(b) Increase the speed of spindle
(c) Reverse the speed of spindle
(d) Transmit power from spindle gear to stud gear
9. Lathe bed is made of
(a) Mild steel
(b) Cast iron
(c) High carbon steel
(d) High alloy steel
10.To prevent lathe bed guideways from damaging by chuck while mounting
(a) Take the help of the supervisor
(b) Support it with screw jack
(c) Lift it with hand crane
(d) Place a wooden piece on the guideways
11. The sliding surfaces of the lathe bed are
(a) Flame hardened
(b) Case hardened
(c) Normalised
(d) Tempered
12. Which one of the following on a lathe is used to give depth of cut?
(a) Compound slide
(b) Top slide
(c) By adjusting the tool
(d) Cross slide
13. A tumbler gear unit consists of
(a) One gear
(b) Two gears
(c) Three gears
(d) Four gears
14.The lathe bed has
(a) One set of 'V guideways and flatways
(b) Two sets of 'V guideways and flatways
(c) Three sets of 'V guideways and flatways
(d) Four sets of 'V guideways and flatways
15.The cross-slide in a lathe moves
(a) Parallel to the axis of rotation
(b) At any angle to the axis of rotation
(c)Perpendicular to the axis of rotation
(d) Either 'a' or 'b'
16.The carriage in a lathe moves
(a) Parallel to the axis of rotation
(b) At any angle to the axis of rotation
(c) Perpendicular to the axis of rotation
(d) Either 'a' or 'b'
17.Which among the following parts of a lathe should have high compressive
strength?
(a) Bed
(b) Main spindle
(c) Lead screw
(d) Sliding gears in headstock
18. The compound slide swivel base is set at 45° to the centre line of lathe. The degree of the reading at the cross slide index will be
(a) 135°
(b)90°
(c) 45°
(d)30°
19. The special gear of 127 teeth or 63 teeth may be used to cut metric threads in a
lathe having British lead screw. It is known as
(a) Idler gear
(b) Change gear
(c) Translating gear
(d) Compound gear
20.Which one of the following statements is true with respect to the half nut?
(a) It is detachable part of the saddle
(b) It is an integral part of the saddle
(c) It is an integral part of the apron
(d) It is detachable part of the apron
21.What is the function of the drop worm provided in the apron of the centre lathe?
(a) Engages / disengages the power feed
(b) Changes the direction of rotation of the workpiece
(c) Changes the feed direction
(d) Engages / disengages the lead screw
22.The tailstock barrel has an internal taper. Which one of the following standard
tapers is provided in the barrel bore?
(a) Metric taper
(b) Morse taper
(c) Jorno taper
(d) Brown and Sharpe taper
23.A jib is provided between the top slide and the swivel base assembly of the compound slide. Its purpose is to
(a) Allowing dismantling the top slide easily
(b) Eliminate the backlash of the screw and the nut in the assembly
(c) Adjust the slackness developed due to wear
(d) Permit flow of the lubricant between the sliding surfaces
24.One of the parts of a centre lathe is tumbler gear unit. It is provided to
(a) Change the direction of feed
(b) Transmit motion from feed shaft to the carriage
(c) Change the direction of rotation of the work
(d) Alter the spindle speed
25.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
26.The capacity of a lathe is expressed as
(a) Horsepower and chuck diameter
(b) Swing and distance between centres
(c) Bed length and spindle speed
(d) Tool post size and lathe travel
27.The carriage of a lathe travels along which axis?
(a) "B" axis
(b) "Z" axis
(c) "Y" axis
(d)"X"axis
28. The basic turning lathe is
(a) Turret lathe
(b) Automatic lathe
(c) Engine lathe
(d) Swiss lathe
Key to Exercise - 01
1. c 2.b 3.d 4.a 5. C
6. a 7.b 8.a 9.b 10.d
11.a 12.d 13.c 14.b 15.c
16.a 17.a 18.c 19.c 20.d
21.a 22.c 23.c 24.a 25.b
26.b 27
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