Manufacturing & Production Engineering 1000+ MCQ with answer for SBI Clerk

1. The capacity of a material to be welded under the imposed fabrication conditions into a specific, suitably designed structure and to perform satisfactorily in the intended service is known as?
A. Weldment
B. Weld tab
C. Weldability
D. Tack weld
Answer : C

2. In oblique cutting of metals, the cutting edge of the tool is
A. Perpendicular to the workpiece
B. Perpendicular to the direction of tool travel
C. Parallel to the direction of tool travel
D. Inclined at an angle less than 90° to the direction of tool travel
Answer : D

3. 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

4. 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

5. While cutting helical gears on a non-differential gear hobber, the feed change gear ratio is
A. Independent of index change gear ratio
B. Dependent on speed change gear ratio
C. Interrelated to index change gear ratio
D. Independent of speed and index change gear ratio
Answer : C

6. 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

7. If the flame of the welding torch is directed towards the progress of welding, then what will you call the welding technique?
A. Forehand welding
B. Flux cored ARC welding
C. Electro slag welding
D. Pulsed spray welding
Answer : A

8. Gears can be best produced on mass production by
A. Shaping
B. Casting
C. Forming
D. Hobbing
Answer : D

9. 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

10. For turning internal tapers, 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 : C

11. In order to achieve a specific surface finish in single point turning, the most important factor to be controlled is
A. Depth of cut
B. Cutting speed
C. Feed
D. Tool rake angle
Answer : B

12. Crater wear is predominant in
A. Carbon tool steels
B. Tungsten carbide tools
C. High speed steel tools
D. Ceramic tools
Answer : B

13. 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

14. 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

15. The process of improving the cutting action of the grinding wheel is called
A. Truing
B. Dressing
C. Facing
D. Clearing
Answer : B

16. In drilling softer materials, the cutting speed is _________ as compared to harder materials.
A. Same
B. Low
C. High
D. None of these
Answer : C

17. In electrochemical machining, the gap between the tool and work is kept as
A. 0.1 mm
B. 0.4 mm
C. 0.35
D. 0.75 mm
Answer : D

18. Ceramic tools are fixed to tool body by
A. Soldering
B. Brazing
C. Welding
D. Clamping
Answer : B

19. In electro discharge machining, tool is made of
A. Brass
B. Copper
C. Copper tungsten alloy
D. All of these
Answer : D

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

21. Match the items of List-I (Equipment) with the items of List-II (Process) and select the correct answer using the given codes.

List-I (Equipment)	List-II (Process)
P. Hot Chamber Machine	1. Cleaning
Q. Muller	2. Core making
R. Dielectric Baker	3. Die casting
S. Sand Blaster	4. Annealing
.	5. Sand mixing

A. P-2, Q-1, R-4, S-5
B. P-4, Q-2, R-3, S-5
C. P-4, Q-5, R-1, S-2
D. P-3, Q-5, R-2, S-1
Answer : D

22. The hardness of a grinding wheel is specified by
A. Brinell hardness number
B. Rockwell hardness number
C. Vickers pyramid number
D. Letter of alphabet
Answer : D

23. Which type of motor is not used in axis or spindle drives of CNC machine tools?
A. Induction motor
B. DC servo motor
C. Stepper motor
D. Linear servo motor
Answer : C

24. The size of a shaper is given by
A. Stroke length
B. Motor power
C. Mass of machine
D. Rate size
Answer : A

25. Crater wear is mainly due to the phenomenon known as
A. Adhesion of metals
B. Oxidation of metals
C. Diffusion of metals
D. All of these
Answer : C

26. The angle between the face and flank of the single point cutting tool is known as
A. Rake angle
B. Clearance angle
C. Lip angle
D. Point angle
Answer : C

27. In a gating system, the ratio 1: 2: 4 represents
A. Sprue base area: runner area: ingate area
B. Pouring basin area: ingate area: runner area
C. Sprue base area: ingate area: casting area
D. Runner area: ingate area: casting area
Answer : A

28. A drill bit of 20 mm diameter rotating at 500 r.p.m. with a feed rate of 0.2 mm/revolution is used to drill a through hole in a mild steel plate 20 mm thickness. The depth of cut in this drilling operation is
A. 0.2 mm
B. 10 mm
C. 20 mm
D. 100 mm
Answer : C

29. Threading is an operation of
A. Smoothing and squaring the surface around a hole
B. Sizing and finishing a small diameter hole
C. Producing a hole by removing metal along the circumference of a hollow cutting tool
D. Cutting helical grooves on the external cylindrical surface
Answer : D

30. During normalizing process of steel, the specimen is heated
A. Between the upper and lower critical temperature and cooled in still air.
B. Above the upper critical temperature and cooled in furnace.
C. Above the upper critical temperature and cooled in still air.
D. Between the upper and lower critical temperature and cooled in furnace.
Answer : C

31. Crack in grinding wheel is developed due to
A. High temperature developed at the contact of the wheel face and work
B. Grinding hard work
C. Low speed of wheel
D. High speed of wheel
Answer : D

32. The factor which affects the tool life is
A. Tool geometry
B. Cutting speed
C. Feed rate
D. All of these
Answer : D

33. 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. None of these
Answer : C

34. What is the type of joining process called, where the parts to be welded are kept in contact and rotated relative to each other and axial pressure is applied when the desired temperature is obtained?
A. Ultrasonic welding
B. Forge welding
C. Electron beam welding
D. Friction welding
Answer : D

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 grinding irregular, curved, tapered, convex and concave surfaces, the grinder used is
A. Cylindrical grinder
B. Internal grinder
C. Surface grinder
D. Tool and cutter grinder
Answer : C

37. 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

38. Which of the following operations is carried out at a minimum cutting velocity if the machines are equally rigid and the tool work materials are the same?
A. Turning
B. Grinding
C. Boring
D. Milling
Answer : D

39. Which of the following statement is wrong as regard to down milling?
A. It can not be used on old machines due to backlash between the feed screw of the table and the nut.
B. The chips are disposed off easily and do not interfere with the cutting.
C. The surface milled appears to be slightly wavy.
D. The coolant can be poured directly at the cutting zone where the cutting force is maximum.
Answer : C

40. For softer materials, the point angle of the drill is kept
A. Equal to 118°
B. Less than 118°
C. More than 118°
D. Any one of these
Answer : B

41. 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

42. The cutting angle of a flat drill varies from
A. 3° to 8°
B. 20° to 30°
C. 60° to 90°
D. 90° to 120°
Answer : D

43. 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

44. 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

45. 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

46. Which of the following statement is wrong?
A. The larger side rake angle produces chipping.
B. The smaller rake angle produces excessive wear and deformation in tool.
C. The side cutting edge angle (less than 15°) increases tool life.
D. The increase in nose radius decreases tool life.
Answer : D

47. 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

48. Which of the following statement is correct in regard to centreless grinding?
A. The workpiece is supported throughout its entire length as grinding takes place.
B. It is a continuous process and adopted for production work.
C. It requires no holding device for the work.
D. All of the above
Answer : D

49. The usual value of the point angle of a drill is
A. 70°
B. 100°
C. 118°
D. 130°
Answer : C

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