1) Which furnace is used to purify pig iron
Blast
Bessemer
Cupola
Peddlling
Correct answer
Cupola
2) Which cast iron is soft, cheap, easy to machining
Malleable cast iron
White cast iron
Nodular cast iron
Gray cast iron
Correct answer
Gray cast iron
3) Which iron is produced by purifying pig iron in the puddling process
Steel
Mild steel
Wrought iron
None of these
Correct answer
Wrought iron
4) The metal which does not contain iron as base metal is known as
Ferrous
Non-ferrous
Steel
None of these
Correct answer
Non-ferrous
5) How much carbon content in high carbon steel
0.3 to 0.5 %
0.80 to 1.0 %
0.05 to 0.45 %
None of these
Correct answer
0.80 to 1.0 %
6) Maximum limit and the minimum limit difference is known as
Deviation
Limit
Tolerance
Fit
Correct answer
Tolerance
7) Two parts interchangeable with each other in assembly is known as
Ductility
Interchangeability
Porosity
None of these
Correct answer
Interchangeability
8) The deviation is the difference between
Basic size - Actual size
Upper deviation
Max limit - Min limit
None of these
Correct answer
Basic size - Actual size
9) How much is the least count of vernier height gauge when measuring in British measurement
0.02 mm
0.002 inch
0.01 mm
0.001 inch
Correct answer
0.001 inch
10) Tumbler gear unit is also known as
Synchromesh type
Pillar type
Universal type
Indexing type
Correct answer
Universal type
11) Which of the following tool post is used for light work
Pillar type
Indexing type
Quick change
None of these
Correct answer
Pillar type
12) ............. is used for job holding when turning an unsymmetrical shaped job
Between center
Faceplate
Four jaw chuck
Three jaw chuck
Correct answer
Faceplate
13) Which chuck is known as independent chuck
Drill plate
Collet chuck
Four jaw chuck
Three jaw chuck
Correct answer
Four jaw chuck
14) Which formula is used when turning taper by the tailstock offset method
Offset = D - d x L x 2L
Offset = D - d - 2L
Offset = D - d x L/2L
Offset = D - d /2L
Correct answer
Offset = D - d x L/2L
15) Which option is not a type of knurling operation?
Straight knurling
Concave knurling
Diamond knurling
Round knurling
Correct answer
Round knurling
16) Which option is not a type of lathe center?
Pipe center
Half-center
Revolving center
Ball bearing center
Correct answer
Ball bearing center
17) Which type of tool post is used for mass production?
Indexing type
American type
Quick change
None of these
Correct answer
Indexing type
18) Which scraper is used for large scraping of curved surfaces?
Hook scraper
Triangular scraper
Bull nose scraper
Flat scraper
Correct answer
Bull nose scraper
19) A least count of vernier micrometer is
0.1 mm
0.01 mm
0.02 mm
1/1000 mm
Correct answer
1/1000 mm
20) When machine vice is clamped with a drill machine table which bolt is used?
"T" bolt
Cheese head bolt
Foundation bolt
Allen bolt
Correct answer
"T" bolt
21) Screw thread micrometer is used to check
T.P.I of the screw
The pitch diameter of the screw
Angle of thread
None of these
Correct answer
The pitch diameter of the screw
22) Which type of maintenance is done regularly and preplanned in the workshop?
Accidental maintenance
Routine maintenance
Preventive maintenance
None of these
Correct answer
Preventive maintenance
23) Information of the machine is maintained in ............
Tool history card
Maintenance chart
Machine history sheet
Lubrication chart
Correct answer
Machine history sheet
24) Pinning, dowelling, staking, brazing & adhesives are ............... techniques
Fastening
Assembling
Torquing
None of these
Correct answer
Assembling
25) Taper pins standard for making taper is
.................
0.111111111
1:25
1:50
None of these
Correct answer
1:50
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