Bihar SBTE Diploma Mechanical 5th SEM Dec 2019 Paper on Auto Manufacturing Process
| Sr. No. | Questions with options |
| 1 | During forging operation, plastic flow of metal takes place
(a) Due to high temperature (b) Due to compressive forces (c) Due to tensile forces (d) Due to shearing forces |
| 2 | During an upsetting operation
(a) Cross section of a piece decreases and length increases (b) Cross section of a piece increases and length decreases (c) Extra metal is removed from the work piece (d) None of the above |
| 3 | Scam welding is used
(a) To form mesh (b) To making continuous welding joint (c) For welding thick components (d) All of the above |
| 4 | Flux is used in a welding process to prevent
(a) Distortion of parts (b) Dirt (c) Oxidation (d) Carburization |
| 5 | Projection welding belongs to this category of welding process
(a) Gas welding (b) Resistance welding (c) Arc welding (d) Forge welding |
| 6 | In arc welding, protection of eyes is needed against
(a) Arc glare (b) Infrared rays (c) Infra red and ultra violet rays (d) Ultra violet rays |
| 7 | Commonly used gases in tungsten arc welding are
(a) Hydrogen and oxygen (b) Hydrogen and argon (c) Hydrogen and helium (d) Helium and argon |
| 8 | Before starting the brazing process, cleaning of parts is necessary to avoid
(a) Scale formation (b) Oxidation (c) Corrosion (d) Slag formation |
| 9 | Several machine tools can be controlled by a central computer in
(a) NC (Numerical Control) machine tool (b) CNC (Computer Numerical Control) Machine tool (c) CCNC (Central Computer Numerical Control) Machine tool (d) None of the above |
| 10 | Part programming mistakes can be avoided in
(a) NC (Numerical Control) machine tool (b) CNC (Computer Numerical Control) machine tool (c) Both (a) & (b) (d) None of these |
| 11 | Which of the following is a type of die?
(a) Simple dies (b) Progressive dies (c) Compound die (d) All of the above |
| 12 | Machine lapping is performed on
(a) Roller bearings (b) Crank shaft (c) Pistons (d) All of the above |
| 13 | Honing is used for finishing
(a) External cylindrical surface (b) Internal cylindrical surface (c) (a) & (b) both (d) None of these |
| 14 | Which of the following operation is different from the rest?
(a) Riveting (b) Embossing (c) Punching (d) Coining |
| 15 | Cutting and forming operations can be done in a single operation on
(a) Simple die (b) Progressive die (c) Compound die (d) Combination die |
| 16 | In blanking operation, the angle of shear is provided on
(a) Die (b) Punch (c) (a)& (b) both (d) None of these |
| 17 | Galvanizing is
(a) A zinc diffusion process (b) An oxidizing process used for aluminium & magnesium article (c) The process of coating of zinc by hot dipping (d) None of these |
| 18 | What is the reason for using unconventional or advanced machining process?
(a) Complex surface (b) High accuracy and surface finish (c) High strength alloys (d) All of the above |
| 19 | A multiple component paint is dried by
(a) Solvent evaporation (b) Oxidation (c) Chemical reaction (d) None of the above |
| 20 | Which machine tool reduces the number of set-ups in machining operation, time spent in setting machine tools and transportation between sections of machines?
(a) Computer numerical control machine tool (b) Direct numerical control machine tool (c) Adaptive control systems (d) Machining centre |
| Data Collected By – Rashmi | |
| Published On – 26th May 2022 | |
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