66. Match the following
    Products
    A. Porous bearings
    B. Fly wheels
    C. Double end spanners
    D. Plastic bottles
    Manufacturing Process
    1. Powder metallurgy
    2. Casting
    3. Closed die forging
    4. Blow moulding

1. 1. A–1, B–2, C–3, D–4

   
   
   

   2. A–1, B–2, C–3, D–4

   
   
   

   3. A–4, B–2, C–3, D–1

   
   
   

   4. A–1, B–4, C–3, D–2

   
   
   

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1. View Hint View Answer Discuss in Forum

   A–1, B–2, C–3, D–4

   Correct Option: B

   A–1, B–2, C–3, D–4

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67. A 10 mm square hole can be cut in a 2 mm thick glass plate by

1. 1. USM

   
   
   

   2. EDM

   
   
   

   3. LBM

   
   
   

   4. ECM

   
   
   

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1. View Hint View Answer Discuss in Forum

   USM is used for machining brittle material like glass.

   Correct Option: A

   USM is used for machining brittle material like glass.

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68. In ECM, the metal removal rate is directly proportional to

1. 1. Density of work material

   
   
   

   2. Gram atomic weight of the work material

   
   
   

   3. Concentration of the electrolyte used

   
   
   

   4. Thermal conductivity of the work material

   
   
   

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1. View Hint View Answer Discuss in Forum

   NA

   Correct Option: B

   NA

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69. Match the following
    

    Process	Properties of work material
    A. Casting	1. Ductility
    B. Forging	2. Malleability
    C. Wire drawing	3. Machinability
    D. Turning	4. Fluidity

1. 1. A–2, B– 4, C–1, D–3,

   
   
   

   2. A–4, B– 1, C–2, D–3,

   
   
   

   3. A–4, B– 2, C–1, D–3,

   
   
   

   4. A–4, B–3, C–1, D–2,

   
   
   

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1. View Hint View Answer Discuss in Forum

   A–4, B– 2, C–1, D–3,

   Correct Option: C

   A–4, B– 2, C–1, D–3,

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70. Match the following
    Machine Components
    A. Machine tool bed
    B. Machine tool spindle
    C. Cutting tool
    D. Worm wheel
    Material used
    1. Forged used
    2. HSS
    3. Bronze
    4. Cast iron

1. 1. A–3, B–4, C–2, D–3

   
   
   

   2. A–4, B–3, C–2, D–1

   
   
   

   3. A–1, B–2, C–3, D–4

   
   
   

   4. A–4, B–1, C–2, D–3

   
   
   

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1. View Hint View Answer Discuss in Forum

   A–4, B–1, C–2, D–3

   Correct Option: D

   A–4, B–1, C–2, D–3

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