Production Engineering Multiple Choice Questions with Answers - Set 04 - ObjectiveBooks

Production Engineering Multiple Choice Questions with Answers - Set 04

Practice Test: Question Set - 04

1. What is the type of welding defect is caused due to stresses on heating and cooling called?
    (A) Incomplete penetration
    (B) Shrinkage void
    (C) Slag Entrapment (Inclusions)
    (D) Incomplete fusion

2. What is the type of welding defect caused due to poor deposition of weld rod is called?
    (A) Porosity
    (B) Undercut
    (C) Under fill
    (D) Crack

3. What is the type of welding defect caused due to poor manipulation of weld rod or a dirty joint called?
    (A) Porosity
    (B) Undercut
    (C) Under fill
    (D) Crack

4. 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

5. 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

6. Which of the following is the correct data structure for solid models?
    (A) Solid part - faces - edges - vertices
    (B) Solid part - edges - faces - vertices
    (C) Vertices - edges - faces -   solid parts
    (D) Vertices - faces- edges - solid parts

7. For generating a Coon’s 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

8. Internal gear cutting operation can be performed by
    (A) Milling
    (B) Shaping with rack cutter
    (C) Shaping with pinion cutter
    (D) Hobbing

9. If a particular Fe-C alloy contains less than 0.83% carbon, it is called
    (A) High speed steel
    (B) Hypo eutectoid steel
    (C) Hyper eutectoid steel
    (D) Cast iron

10. In orthogonal turning of a low carbon steel bar of diameter 150 mm with uncoated carbide tool, the cutting velocity is 90 m/min. The feed is 0.24 mm/rev and the depth of cut is 2 mm. The chip thickness obtained is 0.48 mm. If the orthogonal rake angle is zero and the principle cutting edge angle is 90⁰, the shear angle in degree is
    (A) 20.56
    (B) 26.56
    (C) 30.56
    (D) 36.56

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

12. Hardness of steel greatly improves with
    (A) Annealing
    (B) Cyaniding
    (C) Normalizing
    (D) Tempering

13. A lead-screw with half nuts in a lathe, free to rotate in both directions has
    (A) V-threads
    (B) Whitworth threads
    (C) Buttress threads
    (D) Acme threads

14. Hot rolling of mild steel is carried out
    (A) At recrystallization temperature
    (B) Between 100⁰C to 150⁰C
    (C) Between recrystallization temperature
    (D) Above recrystallization temperature

15. Trepanning is performed for
    (A) Finishing a drilled hole
    (B) Producing a large hole without drilling
    (C) Truing a hole for alignment
    (D) Enlarging a drilled hole

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