Home

Manufacturing & Production Engineering MCQ Solved Paper for NDA

Thursday 9th of March 2023

Sharing is caring

Downlaod Manufacturing & Production Engineering MCQ PDF
1. Which of the following statement is correct for orthogonal cutting system?
A. The cutting edge of the tool is perpendicular to the direction of tool travel.
B. The cutting edge clears the width of the workpiece on either ends.
C. The chip flows over the tool face and the direction of the chip flow velocity is normal to the cutting edge.
D. All of the above
Answer : D
2. In lapping operation, the amount of metal removed is
A. 0.005 to 0.01 mm
B. 0.01 to 0.1 mm
C. 0.05 to 0.1 mm
D. 0.5 to 1 mm
Answer : A
3. Down milling is also called
A. Conventional milling
B. Climb milling
C. End milling
D. Face milling
Answer : B
4. Tool life is measured by the
A. Number of pieces machined between tool sharpenings
B. Time the tool is in contact with the job
C. Volume of material removed between tool sharpenings
D. All of the above
Answer : D
5. What is the name of the device used in arc welding circuits for the purpose of modifying the rate of current change when the weld road is varied rapidly?
A. Reactor
B. Kerf
C. Inductor
D. Cone
Answer : C
6. Calculate the weld per minute, work speed of circular electrode of 220 mm diameter for carrying out seam welding at 4 welds per cm on 1.6 mm thick mild steel tube. Welding cycle consists of 3 cycles on and 2 cycles off Power supply is at 50 Hz.
A. 3000 welds / min, 75 mm / min
B. 600 welds / min, 1500 mm / min
C. 500 welds/ min, 1250 mm/min
D. 22 welds / min, 55 mm / min
Answer : B
7. The relation between tool life (T) and cutting speed (V) is VTn = Constant. In this relation, the value of n depends upon
A. Work material
B. Tool material
C. Working conditions
D. Type of chip produced
Answer : B
8. Hot rolling of mild steel is carried out
A. At recrystallization temperature
B. Between 100?C to 150?C
C. Between recrystallization temperature
D. Above recrystallization temperature
Answer : D
9. The different spindle speeds on a lathe form
A. Arithmetical progression
B. Geometrical progression
C. Harmonical progression
D. Any one of these
Answer : B
10. A right hand tool on a lathe cuts most efficiently when it travels
A. From left to right end of the lathe bed
B. From right to left end of the lathe bed
C. With the help of a compound slide
D. Across the bed
Answer : B
11. Soft materials can not be economically ground due to
A. High temperature involved
B. Frequent wheel clogging
C. Rapid wheel wear
D. Low work piece stiffness
Answer : B
12. The angle between the shear plane and __________ is called shear angle.
A. Work surface
B. Tool face
C. Machine surface
D. None of these
Answer : A
13. A process of removing metal by pushing or pulling a cutting tool is called
A. Up milling
B. Down milling
C. Forming
D. Broaching
Answer : D
14. The tail stock set over method of taper turning is preferred for
A. Internal tapers
B. Small tapers
C. Long slender tapers
D. Steep tapers
Answer : C
15. The maximum production of small and slender parts is done by
A. Watch maker's lathe
B. Sliding head stock automatic lathe
C. Multi-spindle automatic lathe
D. Capstan lathe
Answer : C
16. The correct sequence of the following parameters in order of their maximum to minimum influence on tool life is
A. Feed rate, depth of cut, cutting speed
B. Depth of cut, cutting speed, feed rate
C. Cutting speed, feed rate, depth of cut
D. Feed rate, cutting speed, depth of cut
Answer : C
17. The grooving is an operation of
A. Bevelling the extreme end of a workpiece
B. Embossing a diamond shaped pattern on the surface of a workpiece
C. Reducing the diameter of a workpiece over a very narrow surface
D. Enlarging the end of a hole cylindrically
Answer : C
18. The average cutting speed for turning brass with a high speed steel tool is
A. 15 to 19 m/min
B. 25 to 31 m/min
C. 60 to 90 m/min
D. 90 to 120 m/min
Answer : C
19. Side rake angle of a single point cutting tool is the angle
A. By which the face of the tool is inclined towards back
B. By which the face of the tool is inclined sideways
C. Between the surface of the flank immediately below the point and a plane at right angles to the centre line of the point of the tool
D. Between the surface of the flank immediately below the point and a line drawn from the point perpendicular to the base
Answer : B
20. The guideways are of
A. Flat type
B. V-type
C. Dovetail type
D. Any one of these
Answer : D
21. Which of the following statement is incorrect with reference of lathe cutting tools?
A. The flank of the tool is the surface or surfaces below and adjacent to the cutting edges
B. The nose is the corner, arc or chamfer joining the side cutting and the end cutting edges
C. The heel is that part of the tool which is shaped to produce the cutting edges and face
D. The base is that surface of the shank which bears against the support and takes tangent pressure of the cut
Answer : C
22. The main purpose of a boring operation, as compared to drilling, is to
A. Drill a hole
B. Finish the drilled hole
C. Correct the hole
D. Enlarge the existing hole
Answer : D
23. When two main plates are kept in alignment butting each other and riveted with cover plate on both sides of the main plates with two rows of rivets in each main plate, the joint is known as _______ double cover butt joint.
A. Single riveted
B. Double riveted
C. Both (A) and (B)
D. None of these
Answer : B
24. A hole is of dimension ? = 9 ?0????¹? mm. The corresponding shaft is of dimension ? = 9 ?0.001????¹? mm. The resulting assembly has
A. Loose running fit
B. Close running fit
C. Transition fit
D. Interference fit
Answer : C
25. In electro discharge machining, tool is made of
A. Brass
B. Copper
C. Copper tungsten alloy
D. All of these
Answer : D
26. In electro-discharge machining, dielectric is used to
A. Help in the movement of the sparks
B. Control the spark discharges
C. Act as coolant
D. All of these
Answer : D
27. The chuck used for setting up of heavy and irregular shaped work should be
A. Four jaw independent chuck
B. Three jaw universal chuck
C. Magnetic chuck
D. Drill chuck
Answer : A
28. High speed steel drills can be operated at about _________ the speed of high carbon steel drills.
A. One-half
B. One-fourth
C. Double
D. Four times
Answer : C
29. In up milling, the thickness of chip is
A. Minimum at the beginning of the cut and maximum at the end of the cut
B. Maximum at the beginning of the cut and minimum at the end of the cut
C. Uniform throughout the cut
D. None of these
Answer : A
30. The hardness of a grinding wheel is determined by the
A. Hardness of abrasive grains
B. Ability of the bond to retain abrasives
C. Hardness of the bond
D. Ability of the grinding wheel to penetrate the work piece
Answer : B
31. A single point tool has
A. Rake angle
B. Cutting angle
C. Lip angle
D. All of these
Answer : D
32. Jigs 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. None of the above
Answer : A
33. The chamfering is an operation of
A. Bevelling the extreme end of a workpiece
B. Embossing a diamond shaped pattern on the surface of a workpiece
C. Reducing the diameter of a workpiece over a very narrow surface
D. Enlarging the end of a hole cylindrically
Answer : A
34. The cutting tool in a milling machine is mounted on
A. Spindle
B. Arbor
C. Column
D. Knee
Answer : B
35. Glazing in grinding wheels takes place when the
A. Wheel is too hard or wheel revolves at a very high speed
B. Wheel is too soft or wheel revolves at a very slow speed
C. Wheel is too hard and wheel revolves at very slow speed
D. Wheel is too soft and wheel revolves at a very high speed
Answer : A
36. In which of the following machine, the work is usually rotated while the drill is fed into work?
A. Sensitive drilling machine
B. Radial drilling machine
C. Gang drilling machine
D. Deep hole drilling machine
Answer : D
37. Trepanning is an operation of
A. Making a cone-shaped enlargement of the end of a hole
B. Smoothing and squaring the surface around a hole
C. Sizing and finishing a small diameter hole
D. Producing a hole by removing metal along the circumference of a hollow cutting tool
Answer : D
38. Volume of a cube of side l and volume of a sphere of radius r are equal. Both the cube and the sphere are solid and of same material. They are being cast. The ratio of the solidification time of the cube to the same of the sphere is
A. (4?/6)³ × (r/l)?
B. (4?/6) × (r/l)²
C. (4?/6)² × (r/l)³
D. (4?/6)² × (r/l)?
Answer : D
39. The lip angle is the angle
A. Between the tool face and the ground end surface of flank
B. Made by the face of the tool and the plane parallel to the base of the cutting tool
C. Between the face of the tool and a line tangent to the machined surface at the cutting point
D. None of the above
Answer : A
40. The effect of setting a boring tool above centre height leads to
A. Increase in the effective rake angle and a decrease in the effective clearance angle
B. Increse in both effective rake angle and effective clearance angle
C. Decrease in the effective rake angle and an increase in the effective clearance angle
D. Decrease in both effective rake angle and effective clearance angle
Answer : A
41. In determining the various forces on the chip, Merchant assumed that the
A. Cutting edge of the tool is sharp and it does not make any flank contact with the workpiece
B. Only continuous chip without built-up-edge is produced
C. Cutting velocity remains constant
D. All of the above
Answer : D
42. In a single point tool, the angle between the surface of the flank immediately below the point and a line drawn from the point perpendicular to the base, is known as
A. Side relief angle
B. End relief angle
C. Back rake angle
D. Side rake angle
Answer : B
43. The percentage of carbon in gray cast iron is in the range of
A. 0.25 to 0.75 percent
B. 1.25 to 1.75 percent
C. 3 to 4 percent
D. 8 to 10 percent
Answer : C
44. A push broach as compared to pull broach
A. Has less number of teeth
B. Is short and stocky
C. Removes less material for each pass of the tool
D. All of the above
Answer : D
45. For generating a Coons surface we require
A. A set of grid points on the surface
B. A set of grid control points
C. Four bounding curves defining the surface
D. Two bounding curves and a set of grid control points
Answer : C
46. The process of removing metal by a cutter which is rotated against the direction of travel of workpiece, is called
A. Up milling
B. Down milling
C. Face milling
D. End milling
Answer : A
47. NC contouring is an example of
A. Continuous path positioning
B. Point-to-point positioning
C. Absolute positioning
D. Incremental positioning
Answer : A
48. The type of tool used on lathe, shaper and planer is
A. Single point cutting tool
B. Two point cutting tool
C. Three point cutting tool
D. Multipoint cutting tool
Answer : A
49. Side relief angle of a single point tool is the angle
A. By which the face of the tool is inclined towards back
B. By which the face of the tool is inclined sideways
C. Between the surface of the flank immediately below the point and a plane at right angles to the centre line of the point of tool
D. Between the surface of the flank immediately below the point and a line drawn from the point perpendicular to the base
Answer : C
50. What is the type of shielding gas for GTAW (Gas Tungsten Arc Welding) used for carbon steels only called?
A. Argon H?
B. Argon CO?
C. Argon Helium
D. Helium
Answer : B
Downlaod Manufacturing & Production Engineering MCQ PDF

Sharing is caring

Related Post