Q. 1. Cutting fluids mostly used for machining steel is…….
A : Distilled Water
B : Soluble oil
C : Hydraulic oil
D : Heavy oil
Soluble oil
Q. 2. The tool material best suited for machining of 0.2% Carbon steel at high speed (100-
300 m/min.) is
A : Co-WC
B : Diamond
C : HSS
D : CBN
CBN
Q. 3. Which of the following is a not a surface finishing process?
A : Honing
B : Buffing
C : Lapping
D : Turning
Turning
Q. 4. Which of the following is not element of Jigs and fixtures
A : tool guiding frame and bushes
B : base and body or frame
C : cutter
D : indexing plates
cutter
Q. 5. The jigs and fixtures reduces
A : unskilled labor
B : pre-machining operations like marking, measuring, laying out, etc.
C : manual
handling operations
D : set-up time
unskilled labor
Q. 6. Fixtures are used
A : for holding and guiding the tool in drilling, reaming or tapping operations
B : for holding the work in milling, grinding, planing or turning operations
C : to check the
accuracy
of workpiece
D : only guiding the tool
for holding the work in milling, grinding, planing or turning operations
Q. 7. The device which is used to remove workpiece from close-fitting locators, after the
workpiece has been removed is called as
A : remover
B : escaper
C : ejector
D : blocker
ejector
Q. 8. The following is(are) the advantage(s) of cast jigs or fixtures
A : No heat treatments are required for the cast jigs and fixtures
B : If cast jigs or fixture drops down, they don’t get misaligned or de-shaped, although it may break
C : It prevents the
occurrence
of tool chatter
in milling
D : All of the above
All of the above
Q. 9. Which of the following is not a locating device?
A : nesting
B : flathead
C : pins
D : strap
nesting
Q. 10. Which of the following code is used to specify Spindle start forward / Clockwise
rotation in milling and drilling?
A : M12
B : M01
C : M15
D : M03
M03
Q. 11. The time (in minutes) for a drilling a hole is given by t= (depth of hole+
h)/Feed×RPM, where h is
A : length of the drill
B : drill diameter
C : flute length of the drill
D : cone height of the drill
cone height of the drill
Q. 12. The operation which is not performed on a shaper machine is
A : machining horizontal surface
B : machining vertical surface
C : machining angular surface
D : Turning
Turning
Q. 13. Twist drills are made of
A : High speed steel
B : Carbon steel
C : Stainless steel
D : Either (1) or (2)
Either (1) or (2)
Q. 14. End of program (Reset)
A : M33
B : M31
C : M32
D : M30
M30
Q. 15. Which of the following is not an application of EBM process?
A : Machining
B : Welding
C : Engraving
D : Surface Hardening
Surface Hardening
Q. 16. Fixtures are not used in
A : Milling
B : Shaping
C : Turning
D : drilling
drilling
Q. 17. In CNC programing, block of Information G indicates
A : Sequence command
B : Preparatory commandr
C : Miscellaneous command
D : Machine type
Preparatory commandr
Q. 18. The material which on machining produces chips with built
up edge is
A : Brittle material
B : Tough material
C : Hard material
D : Ductile material
Ductile material
Q. 19. Which of the following process is based on Faradays law of Electrolysis?
A : Electrochemical Machining
B : Abrasive Jet Machining
C : Ultrasonic Machining
D : Laser Beam Machining
Electrochemical Machining
Q. 20. Jigs and fixtures are
A : machining tools
B : precision tools
C : both
D : none of the above
precision tools
Q. 21. The cutting speed for counter-boring should be __________ that of drilling operation
A : equal to
B : less than
C : greater than
D : Not have any relation based on operation
greater than
Q. 22. Which of the following code is used to specify Peck-Drilling Cycle in milling and
drilling?
A : G73
B : G76
C : G87
D : G83
G83
Q. 23. In drilling softer materials, the cutting speed is __________ as compared to harder
materials
A : same
B : low
C : high
D : Very low
high
Q. 24. The angle between side cutting edge and end cutting edge is called as
A : approach angle
B : nose angle
C : side relief angle
D : end relief angle
nose angle
Q. 25. Which of the following code is used to specify feed per revolution in milling and
drilling?
A : G69
B : G10
C : G00
D : G95
G95
Q. 26. In which type of locator having depression /recess same as the shape of the job ?
A : Pin locator
B : Nesting locator
C : Solid surface
D : Adjustable locator
Nesting locator
Q. 27. A fixture does not
A : Holds the workpiece
B : Locate the workpiece
C : Guide the tool
D : All of the above
Guide the tool
Q. 28. Generally adjustable locators used to locate which surface ?
A : grinding
B : Rough
C : machined
D : superfinished
Rough
Q. 29. Part-programming mistakes can be avoided in
A : NC (Numerical Control) machine tool
B : CNC (Computer Numerical Control) machine tool
C : Both a. and b
D : Conventional machining
CNC (Computer Numerical Control) machine tool
Q. 30. Which of the following operation, we can’t perform on drilling machine?
A : reaming
B : tapping
C : lapping
D : Turning
Turning
Q. 31. The jigs and fixtures can be constructed through
A : Casting
B : Fabrication
C : Welding
D : All of the above
All of the above
Q. 32. The device, fed to the control unit of NC machine tool which sends the position
command signals to sideway transmission elements of the machine, is called as
A : controller
B : tape
C : feedback unit
D : Leadscrew
tape
Q. 33. A device, in which a component is held and located for a specific operation and
bushes are integrated that guide the tool, is called as
A : fixture
B : jig
C : clamps
D : none of the above
jig
Q. 34. The following type of jig is used for machining in more than one plane
A : Template jig
B : Box type jig
C : indexing jig
D : Open type jig
Box type jig
Q. 35. Larger the shear plane length, power required for cutting the same
material will be
A : Larger
B : smaller
C : Same
D : Not affected
Larger
Q. 36. Use of tail stock in cylindrical grinding machine is___________
A : To drive the
work piece
B : To give feed to
the wheel head
C : Speed of
grinding wheel
D : To support the
To support the
other end of the
work piece
Q. 37. Which of the following specified grinding wheel will have
Silicon carbide abrasive?
A : Z 46 K 5 B 17
B : C 600 K 5 B 17
C : A 8 K 5 B 17
D : A 80 K 5 B 17
C 600 K 5 B 17
Q. 38. Carbide and ceramic tips are used in ________
A : slab mill
B : face mill
C : fly mill
D : Gang Mill
face mill
Q. 39. A point to point control system is suitable only for one of the following applications
A : Milling profile
B : Turning
C : Drilling
D : Grinding
Drilling
Q. 40. Cemented carbide tool of straight Co-WC is not suitable for steel cutting, because
A : Steel has high hardness
B : Cutting of steel
generates very
high temperature
C : Steel contains Fe
which reacts with
C and promote
diffusive wear
D : Steel contains
Steel contains Fe which reacts with C and promote diffusive wear
Fe which reacts
with Co and
promote
abrasive wear
Q. 41. The process of improving the cutting action of the grinding
wheel is called
A : Truing
B : Dressing
C : Facing
D : Clearing
Dressing
Q. 42. This type of jig is employed on multi-spindle machines
A : Index jig
B : Universal jig
C : Open type jig
D : Multi-station jig
Multi-station jig
Q. 43. Feed control system is responsible for which action in ECM?
A : Giving feed to tool
B : Electrolyte supply
C : Power supply
D : Workpiece holding
Giving feed to tool
Q. 44. Which of the following specified grinding wheel will have
Aluminum oxide abrasive?
A : Z 46 K 5 B 17
B : C 600 K 5 B 17
C : C 8 K 5 B 17
D : A 80 K 5 B 17
A 80 K 5 B 17
Q. 45. How is material removed in Electro discharge machining?
A : Melt and evaporate
B : Corrode and break
C : Mechanical erosion takes place
D : Abrassive action
Melt and evaporate
Q. 46. The angle formed by the leading edge of the land with a plane having the axis of the
drill, is called
A : helix or rake angle
B : point angle
C : chisel edge angle
D : lip clearance angle
helix or rake angle
Q. 47. What is the material removal mechanism of Laser beam machining process?
A : Melt and evaporate
B : Electro chemical corrosion
C : Mechanical erosion of materials
D : Electro chemical dissolution
Melt and evaporate
Q. 48. The following holds the workpiece securely in a jig or fixture against the cutting
forces
A : Clamping device
B : Locating device
C : fixing devices
D : Guiding device
Clamping device
Q. 49. Any number of equal divisions can be obtained on milling machine by
A : Direct Indexing
B : Simple Indexing
C : Compound Indexing
D : Differential Indexing
Compound Indexing
Q. 50. In NC (Numerical Control) machine tool, the position feedback package is connected
between
A : control unit and programmer
B : programmer and machine tool
C : control unit and machine tool
D : programmer and process planning
control unit and machine tool
Q. 51. The following type of jig is used to drill a series of equidistant hole along a circle
A : Plate type jig
B : Index jig
C : Open type jig
D : Pot type jig
Index jig
Q. 52. The following type of jig is used for machining in more than one plane
A : Template jig
B : Plate type jig
C : Box type jig
D : Open type jig
Box type jig
Q. 53. As the abrasive flow rate increases, what happens to the volumetric removal rate in
AJM?
A : Increases
B : Decreases
C : Increase and then decrease
D : Decrease and then increase
Increase and then decrease
Q. 54. Which are the suitable hole circles from index plate 2 to index 69 divisions by
compound indexing
A : 21 and 23
B : 23 and 27
C : 23 and 29
D : 23 and 31
23 and 29
Q. 55. In a drilling operation using a twist drill, the lip angle is 120 degree (standard), the
spindle speed is 300 rpm, the feed is 0.2 mm/rev and the drill diameter is 10 mm,calculate
machining time to drill a hole of 30 mm long ?
A : 0.88 min
B : 0.54 min
C : 1.2 min
D : 3 min
0.54 min
Q. 56. In an orthogonal machine test on a steel, rake angle 20 degrees, uncut chip thickness
is 0.1 mm,
cut chip thickness is 0.25 mm calculate shear angle approximately equals to
A : 23 Degrees
B : 33 Degrees
C : 43 Degrees
D : 13 Degrees
23 Degrees
Q. 57. The device which place the workpiece in the same position, in jig and fixture, cycle
after cycle is called as
A : placing device
B : locating device
C : Guiding device
D : fixing device
locating device
Q. 58. In CNC program block, N002 G02 G91 X40 Z40….,
G91 refer to
A : Absolute dimension
B : Incremental dimension
C : Rapid Feed
D : Linear interpolation
Incremental dimension
Q. 59. In Abrasive jet machining, work piece material of removed by which of the following
means?
A : Vaporization
B : Electro plating
C : Mechanical abrasion
D : Corrosion
Mechanical abrasion
Q. 60. A grinding wheel is said to be of _________ if it holds the
abrasive grains more securely
A : Soft grade
B : Medium grade
C : Hard grade
D : very soft grade
Hard grade