1) Name the part marked ‘X’ in Figure.
tailstock
bed
headstock
cross-slide
Correct answer
bed
2) Bent tail carrier is shown in the figure. What is the purpose of this carrier?
hold the work in the fixture
hold the work between the center
hold the work in 4 jaw chuck
hold the work in 3 jaw chuck
Correct answer
hold the work between the center
3) Name the angle marked ‘A’ in the lathe cutting tool shown in the figure?
front clearance angle
side rake angle
front rake angle
side clearance angle.
Correct answer
side rake angle
4) Calculate the “RPM” for plain turning a 50 mm workpiece using HSS tool. Recommended cutting speed is 30 meters/mm.
221
201
191
181
Correct answer
191
5 ) Name the lathe accessory shown in the figure.
automatic chuck
self-centering chuck
collet chuck
Four jaw chuck
Correct answer
Four jaw chuck
6) Name the lathe accessory shown in the figure.
faceplate
catch plate
drive plate
safety drive plate
Correct answer
faceplate
7) Name the tool post shown in the figure.
single way tool post
index type tool post
British type tool post
universal tool post
Correct answer
single way tool post
8) Grades of knurling are shown. Name the grade of knurling marked ‘X’ in Fig.
Standard
Fine
Coarse
Medium
Correct answer
Fine
9) The taper provided n nose of the tailstock barrel/spindle of the lathe is......................
Metric taper
Morse taper
Jarno taper
Brown and Sharpe
Correct answer
Morse taper
10) While drilling, the drill gets overheated. This is due to .....................
the material being drilled is ductile
excessive cutting pressure
more lip clearance angle
less cutting angle
Correct answer
excessive cutting pressure
11) A butters thread profile is shown. What ¡s the angle marked “X” in Figure.
30°
75°
45°
60°
Correct answer
45°
12) The surface connecting crest and root of a thread is termed ...........................
Depth of thread
Thread angle
Flank
Pitch
Correct answer
Flank
13) The figure below is a straight shank twist drill. What is the name of part A?
Cutting edge
Body clearance
Flank
Pitch
Correct answer
Body clearance
14) The flat drill is shown in Figure. Name the angle marked “X” in Fig.
rake angle
cutting clearance
point angle
chisel angle
Correct answer
cutting clearance
15) Twist drills are made with different helix angles, the helix angle determines ............
Cutting angle
Rake angle
Lip angle
Clearance angle
Correct answer
Rake angle
16) By which one of the following measuring methods the D and d of a tapered workpiece can be measured?
Vernier caliper
Vernier micrometer
Outside caliper
Sine bar
Correct answer
Sine bar
17) The grade of the grinding wheel is determined by the ......................
bond
abrasive
size of abrasive
density
Correct answer
bond
18) Which one of the following is an artificial abrasive?
Emery
Silicon carbide
Corundum
Diamond
Correct answer
Silicon carbide
19) To check the dimensional limits of an external screw thread the most suitable will be ..........
screw pitch gauge
thread ring gauge
plug gauge
thread micrometer
Correct answer
thread micrometer
20) Thread ring gauges are used to check external threads. Separate ‘Go’ and ‘No Go’ gauging members are provided. Which one of the following screw thread elements are not checked with the ring gauges?
Pitch diameter
Pitch
Helix angle
Profile
Correct answer
Pitch diameter
21) Puddling furnace is used’ to produce ..............
pig iron
steel
cast iron
wrought iron
Correct answer
wrought iron
22) The melting point of tin is ........................
1000°C
232°C
600°C
120°C
Correct answer
232°C
23) Density of steel is .....................
24) The free carbon content in cast iron in an independent form is known as ...................
Ferrite
Graphite
Martensite
Pearlite
Correct answer
Graphite
25) The melting point of cast iron is ......................
962°C
1260°C
1615°C
1150°C
Correct answer
1150°C
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