IBPS PO - Manufacturing & Production Engineering 1000+ MCQ [Solved] PDF Download

1. Drilling is an example of
A. Orthogonal cutting
B. Oblique cutting
C. Simple cutting
D. Uniform cutting
Answer : B

2. A better machinable metal is one which gives
A. Lower chip-tool contact area and larger shear angle
B. Higher chip-tool contact area and smaller shear angle
C. Lower chip-tool contact area and smaller shear angle
D. Higher chip-tool contact area and larger shear angle
Answer : A

3. Which of the following operations can be performed with milling cutters?
A. Cutting key ways on shafts
B. Cutting external screw threads
C. Cutting teeth of spur gears
D. All of these
Answer : D

4. The effective number of lattice points in the unit cell of simple cubic, body centred cubic, and face centred cubic space lattices, respectively, are
A. 1, 2, 2
B. 1, 2, 4
C. 2, 3, 4
D. 2, 4, 4
Answer : B

5. When the shear angle is small
A. Path of shear is short and chip is thin
B. Path of shear is large and chip is thick
C. Path of shear is short and chip is thick
D. Path of shear is large and chip is thin
Answer : B

6. The tool life is said to be over if
A. Poor surface finish is obtained
B. There is sudden increase in cutting forces and power consumption
C. Overheating and fuming due to heat of friction starts
D. All of the above
Answer : D

7. 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

8. Stellite preserves hardness upto a temperature of
A. 350°C
B. 500°C
C. 900°C
D. 1100°C
Answer : D

9. Match the following metal forming processes with their associated stresses in the work piece.

Metal forming process	Types of stress
1. Coining	P. Tensile
2. Wire Drawing	Q. Shear
3. Blanking	R. Tensile and compressive
4. Deep Drawing	S. Compressive

A. 1-S, 2-P, 3-Q, 4-R
B. 1-S, 2-P, 3-R, 4-Q
C. 1-P, 2-Q, 3-S, 4-R
D. 1-P, 2-R, 3-Q, 4-S
Answer : A

10. An expendable pattern is used in
A. Slush casting
B. Squeeze casting
C. Centrifugal casting
D. Investment casting
Answer : D

11. As tool and work are not in contact in EDM process
A. No relative motion occurs between them
B. No wear of tool occurs
C. No power is consumed during metal cutting
D. No force between tool and work occurs
Answer : D

12. In a shaper
A. Tool is stationary and work reciprocates
B. Work is stationary and tool reciprocates
C. Tool moves over stationary work
D. Tool moves over reciprocating work
Answer : B

13. The tool made of cemented carbide wear out faster at
A. Slow speeds
B. Medium speeds
C. Fast speeds
D. Very fast speeds
Answer : A

14. A bottoming tap has
A. Its end tapered for about three or four threads
B. Its end tapered for about eight or ten threads
C. Full threads for the whole of its length
D. None of the above
Answer : C

15. A ring gauge is used to measure
A. Outside diameter but not roundness
B. Roundness but not outside diameter
C. Both outside diameter and roundness
D. Only external threads
Answer : A

16. 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

17. In a metal arc welding process, a gas metal arc welding with magnetized flux is used and can be done in all the positions i.e. flat position, vertical position or inclined position.
A. Globular transfer
B. Spray transfer
C. GMAW practice
D. Dip transfer
Answer : C

18. Tumbler gears in lathe are used to
A. Reduce the spindle speed
B. Cut gears
C. Give desired direction of movement to the lathe carriage
D. Drill a workpiece
Answer : C

19. 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

20. Cast iron during machinin produces
A. Continuous chips
B. Discontinuous chips
C. Continuous chips with built-up edge
D. None of these
Answer : B

21. The cutting fluid mostly used for machining steel is
A. Water
B. Soluble oil
C. Dry
D. Heavy oils
Answer : B

22. Which of the following engineering materials is the most suitable candidate for hot chamber die casting?
A. Low carbon steel
B. Titanium
C. Copper
D. Tin
Answer : D

23. A shaft has a dimension, ?9 +0.025??????, the respective values of fundamental deviation and tolerance are
A. - 0.025, ±0.008
B. - 0.025, 0.016
C. - 0.009, ± 0.008
D. - 0.009, 0.016
Answer : D

24. In machining metals, chips break due to __________ of work material.
A. Toughness
B. Ductility
C. Elasticity
D. Work hardening
Answer : D

25. A feed gear box for a screw cutting lathe is designed on the basis of
A. Geometric progression
B. Arithmetic progression
C. Harmonic progression
D. None of these
Answer : A

26. When 3-2-1 principle is used to support and locate a three dimensional work-piece during machining, the number of degrees of freedom that are restricted is
A. 7
B. 8
C. 9
D. 10
Answer : C

27. Green sand mould indicates that
A. Polymeric mould has been cured
B. Mould has been totally dried
C. Mould is green in colour
D. Mould contains moisture
Answer : D

28. What type of fusion welding process is used for welding sheet metals of all engineering metals (except Cu, Ag) in automobile and air craft industries, pipe and tubing production?
A. Thermit welding
B. Electroslag welding
C. Resistance welding
D. Submerged arc welding
Answer : C

29. Larger end cutting edge angle _________ tool life.
A. Increases
B. Decreases
C. Does not effect
D. None of these
Answer : A

30. While current is shut down in the welding circuit, what kind of voltage exists between the output terminals of the welding machine?
A. GTAW
B. Open air cut voltage
C. Kerf
D. Gouging
Answer : B

31. The operation of producing grooves around the periphery of a cylindrical or conical workpiece is called
A. Profile milling
B. Gang milling
C. Saw milling
D. Helical milling
Answer : D

32. 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

33. The abrasive recommended for grinding materials of low tensile strength is
A. Silicon carbide
B. Aluminium oxide
C. Sand stone
D. Diamond
Answer : A

34. When the shear angle is large
A. Path of shear is short and chip is thin
B. Path of shear is large and chip is thick
C. Path of shear is short and chip is thick
D. Path of shear is large and chip is thin
Answer : A

35. A grinding wheel is said to be of _________ if the abrasive grains can be easily dislodged.
A. Soft grade
B. Medium grade
C. Hard grade
D. None of these
Answer : A

36. 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

37. Ceramic cutting tools are
A. Made by cold pressing of aluminium oxide powder
B. Available in the form of tips
C. Brittle and have low bending strength
D. All of these
Answer : D

38. In which of the following milling machine, the table can be tilted in a vertical plane by providing a swivel arrangement at the knee?
A. Universal milling machine
B. Plain milling machine
C. Universal milling machine
D. Hand milling machine
Answer : C

39. An open structure of a grinding wheel is used for
A. Soft materials
B. Tough materials
C. Ductile materials
D. All of these
Answer : D

40. The cutting speed of a drill depends upon the
A. Material of drill
B. Type of material to be drilled
C. Quality of surface finish desired
D. All of these
Answer : D

41. The point angle of a drill, for drilling stainless steel, is
A. 90°
B. 118°
C. 135°
D. 150°
Answer : C

42. In the relation VTⁿ = C, the value of n for ceramic tools is
A. 0.1 to 0.2
B. 0.20 to 0.25
C. 0.25 to 0.40
D. 0.40 to 0.55
Answer : D

43. For turning small taper on long workpiece, the suitable method is
A. By a form tool
B. By setting over the tail stock
C. By a taper turning attachment
D. By swivelling the compound rest
Answer : B

44. Which of the following statement is wrong about ultrasonic machining?
A. It is best suited for machining hard and brittle materials
B. It cuts materials at very slow speeds
C. It removes large amount of material
D. It produces good surface finish
Answer : C

45. The average cutting speed for turning mild steel 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 : B

46. In American Standard Association (A S A) system, if the tool nomenclature is 8-6-5-5-10-15-2 mm, then the side rake angle will be
A. 5°
B. 6°
C. 8°
D. 10°
Answer : B

47. The addition of lead, sulphur and phosphorus to low carbon steels, help to
A. Reduce built up edge
B. Break up chips
C. Improve machinability
D. All of these
Answer : D

48. The grinding operation is a
A. Shaping operation
B. Forming operation
C. Surface finishing operation
D. Dressing operation
Answer : C

49. EDM machining is applied for
A. Shaping carbide dies and punches having complicated profiles
B. Making large number of small holes in sieves and fuel nozzles
C. Embossing and engraving on harder materials
D. All of these
Answer : D

50. In Oxyacetylene gas welding, temperature at the inner cone of the flame is around
A. 3500?C
B. 3200?C
C. 2900?C
D. 2550?C
Answer : B