Production Engineering Multiple Choice Questions
1. Maximum flame temperature in case of gas welding occurs at
a. next to the inner cone
b. inner cone
c. at the tip of the torch
d. at the tip of the fame
2. In shaper machine the time taken during the idle stroke is less as compared to forward cutting stroke and this is obtained by ___ mechanism.
a. Quick return
b. Clapper box
c. Back gear
d. None of the options
3. Which of the following sheet metal operation is not performed on press machine
a. Punching
b. Drawing
c. Metal spinning
d. Blanking
4. Preheating before welding is done to
a. prevent workpiece deformation
b. prevent cold cracks
c. burn away oil, grease etc. from work surface
d. make steel softer
5. On planer machine
a. Both work piece and tool travel back and forth
b. Work piece is held stationary and the cutting tool on the ram is moves back and forth across the work
c. The tool is stationary and the work piece travels back and forth under the tool
d. None of the options
6. The spacing of abrasive particles with respect to one another in grinding wheel is called
a. Grit
b. Grade
c. Grain size
d. Structure of the wheel
7. Which of the following pair is not correctly matched?
a. Large bells – Loam moulding
b. Large pipes – Centrifugal casting
c. Jewellery – Lost wax process
d. Aluminium alloy – Pressure die casting
8. The cylindrical portion of the land of the twist drill bit which is not cut away to provide clearance is called
a. Margin
b. Point
c. Helix
d. Neck
9. In oxy. acetylene gas welding three types of flames can be adjusted. Which order is correct for descending temperature?
a. Carburizing, Oxidizing, Neutral
b. Oxidizing, Carburizing, Neutral
c. Oxidizing, Neutral , Carburizing
d. Neutral, Oxidizing, Carburizing
10. Crater wear starts at some distance from the tool tip because
a. tool temperature is maximum at that region
b. tool strength is minimum at that region
c. stress on rake face is maximum at the region
d. Cutting fluid cannot penetrate that region
11. When viewed from the cutting point the anticlockwise rotation of a drill in order to cut is called
a. Core drill bit
b. Rasp cut drill bit
c. Right hand cut drill bit
d. Left hand cut drill bit
12. Which of the following metals are used in solder alloys?
a. Iron
b. Tin
c. Gold
d. Aluminum
13. Back rack angle
a. Appears at the end of tool signature
b. Appears at the middle of tool signature
c. Appears at the start of tool signature
d. Appears at the second position of tool signature
14. The process by which grinding wheel restores the original shape is known as
a. Marking
b. Truing
c. Dressing
d. None of these options
15. The purpose of adding wood flour or saw dust to foundry sand is to improve
a. Hot strength
b. Dry strength
c. Collapsibility
d. Mouldability
16. During the execution of CNC part program block
NO20 G02 X45.0 Y25.0 R5.0 the type of tool motion will be
a. rapid feed
b. Linear interpolation
c. Circular interpolation. counterclockwise
d. Circular interpolation. clockwise
17. The flattened end of a taper shank drill bit, intended to fit into a driving slot in a socket is known as
a. Tang
b. Land
c. Flute
d. Web
18. In Investment casting pattern is made up of ___ .
a. Wood
b. Metal
c. Clay
d. Wax
19. Two dimensional metal cutting in which the cutting edge is normal to the work piece is called
a. Forming
b. Orthogonal cutting
c. Oblique cutting
d. None of the options
20. When the hole in the sheet metal is to be accurate then
a. Punch is made to the size of the hole
b. Die is made to the size of the hole
c. Punch size is obtained by subtracting clearance
d. All of the options
21. The following Casting defect develops due to inadequate venting
a. Blow holes
b. Inclusions
c. Cold Shuts
d. None of the options
22. Angle between the face of the tool and a line parallel with base of the tool measured in a perpendicular plane through the side cutting edge is called
a. Back rake angle
b. Side relief angle
c. End relief angle
d. Side rake angle
23. Tool used for cutting inside threads is called
a. Tap
b. Bender
c. Cutter
d. Die
24. The operation of making a cone shaped enlargement or recess at the end of a hole is called
a. Countersinking
b. Boring
c. Tapping
d. Spot facing
25. Which of the following accessory is employed on metal cutting lathe for holding jobs, which cannot be conveniently held between centers or by chucks
a. Chuck
b. Face plate
c. Mandrel
d. None of the options
26. Before drilling a hole ,its centre is marked with a
a. Ring spanner
b. Punch
c. Drill bit
d. None of the options
27. Spot welding is a type of
a. Tungsten inert gas welding
b. Resistance welding
c. Arc welding
d. Gas welding
28. On metal cutting lathe the distance that a tool advances into the work during one revolution of the headstock spindle is called
a. Depth of cut
b. Cutting speed
c. Feed
d. None of the options
29. The role of lead screw in lathe machine is to aid in
a. Surface finishing
b. Thread cutting
c. Spinning
d. Knurling
30. Silicon carbide is a(n) _______ abrasive.
a. Artificial
b. Natural
c. Synthetic
d. None of the above
31. In Electro Discharge Machining (EDM), the tool is made up of:
a. Brass
b. Cast iron
c. Copper
d. All of the above
32. In Thermit welding, aluminum and iron oxide are mixed in proportion of
a. 2 : 1
b. 1 : 1
c. 1 : 2
d. 1 : 3
33. The process of making hollow casting from permanent mould by close fitting core is called
a. Centrifugal casting
b. Pressed casting
c. Slush casting
d. Die casting
34. In chemical milling process, the chemical reagent of steel work piece is:
a. Sodium chloride
b. Caustic soda
c. Sodium sulphate
d. Nitric acid
35. The binder in case of synthetic sand is:
a. Bentonite and water
b. Water
c. Molasses
d. Clay
36. If ball bearing is to be fitted on a shaft, the fit between the inner race of bearing and the concerned shaft will be _______ fit.
a. Transition
b. Clearance
c. Interference
d. None of the above
37. In case of gas welding, the flux is
a. Not used
b. Used as powder
c. Coated on electrodes
d. None of the above
38. In arc welding, the electric arc is produced between the work and the electrode by
a. Flow of current
b. Contact resistance
c. Voltage
d. All of the above
39. In submerged arc welding, an arc is produced between a
a. Two tungsten electrodes and the work
b. Bare metal electrode and the work
c. Metal electrode and the work
d. Carbon electrode and the work
40. Which of the following is example of plastic welding?
a. Forge welding
b. Thermit welding
c. Arc welding
d. Gas welding
41. A pattern maker’s shrinkage rule considers
a. All materials of the pattern
b. All materials to be cast
c. Only shrinkage allowance
d. All pattern allowances
42. Metal patterns are used for
a. Large scale production of castings
b. Complicated castings
c. Large castings
d. Small castings
43. Wear ratio of tungsten carbide work is:
a. 3
b. 2
c. 1
d. 0.5
44. Burnishing process can give _______ surface finish on a component.
a. Unidirectional
b. Bi. directional
c. Highest
d. Lowest
45. Which of the following impurity in cast iron makes it hard and brittle?
a. Phosphorus
b. Manganese
c. Sulphur
d. Silicon
46. In case of which fit, the tolerances are most tight?
a. Can’t say
b. Transition
c. interference
d. Clearance
47. Lay is a concept applicable for _______
a. Machine layout
b. Surface finish
c. Fit
d. Tolerance
48. _______ is useful for angular measurement.
a. Angular gauge
b. Interferometry
c. Both a and b
d. None of the above
49. _______ tolerance is related to alignment of components.
a. Runout
b. Straightness
c. Perpendicularity
d. Roughness
50. Which of the following welding process uses non. consumable electrodes?
a. Submerged arc welding
b. Manual arc welding
c. MIG welding
d. TIG welding