Virtual Labs

Q1: In sand casting, what is the purpose of the 'Pattern'?

a: To melt the metal Explanation

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b: To create the cavity in the mould Explanation

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c: To finish the surface Explanation

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d: To join two metal pieces Explanation

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Q2: Which casting defect is caused by trapped gas bubbles inside the casting?

a: Misrun Explanation

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b: Cold shut Explanation

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c: Blowholes Explanation

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d: Mold shift Explanation

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Q3: Which forging operation involves increasing the diameter of a workpiece while reducing its length?

a: Drawing down Explanation

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b: Upsetting Explanation

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c: Punching Explanation

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d: Bending Explanation

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Q4: In a lathe machine, which operation produces a flat surface at the end of the workpiece?

a: Turning Explanation

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b: Knurling Explanation

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c: Facing Explanation

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d: Thread cutting Explanation

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Q5: What is the primary function of 'Flux' in electric arc welding?

a: To conduct electricity Explanation

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b: To cool the weld Explanation

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c: To protect the molten pool from atmospheric oxidation Explanation

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d: To increase the melting point Explanation

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Q6: Which heat treatment process is primarily used to soften steel and improve machinability?

a: Quenching Explanation

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b: Annealing Explanation

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c: Hardening Explanation

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d: Carburizing Explanation

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Q7: Which machining process uses a multi-point rotating cutter to remove material by feeding the workpiece against it?

a: Milling Explanation

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b: Turning Explanation

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c: Shaping Explanation

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d: Drilling Explanation

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Q8: In Additive Manufacturing (3D Printing), how is the object created?

a: By removing material from a block Explanation

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b: By adding material layer-by-layer Explanation

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c: By forging a hot billet Explanation

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d: By pouring metal into a sand mould Explanation

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Q9: What is the 'Shrinkage Allowance' on a pattern used for?

a: To compensate for machining removal Explanation

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b: To allow easy removal of pattern from sand Explanation

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c: To compensate for metal contraction during cooling Explanation

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d: To improve surface finish Explanation

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Q10: Which type of welding uses a non-consumable tungsten electrode?

a: MIG Welding Explanation

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b: TIG Welding (GTAW) Explanation

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c: Stick Welding (SMAW) Explanation

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d: Oxy-Acetylene Welding Explanation

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MEM-103 Manufacturing Processes-I