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Mechanical Engineering :: Manufacturing and Production Technology

  1. The abrasive recommended for grinding materials of high tensile strength is

  2. A.

     Silicon carbide

    B.

     Aluminium oxide

    C.

     Sand stone

    D.

     Diamond

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  3. The abrasive recommended for grinding materials of low tensile strength is

  4. A.

     Silicon carbide

    B.

     Aluminium oxide

    C.

     Sand stone

    D.

     Diamond

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  5. The cutting force in up milling ________ per tooth movement of the cutter.

  6. A.

     Is zero

    B.

     Is maximum

    C.

     Decreases from maximum to zero

    D.

     Increases from zero to maximum

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  7. The factor responsible for the formation of discontinuous chips is

  8. A.

     Low cutting speed and large rake angle

    B.

     Low cutting speed and small rake angle

    C.

     High cutting speed and large rake angle

    D.

     High cutting speed and small rake angle

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  9. The main purpose of a boring operation, as compared to drilling, is to

  10. A.

     Drill a hole

    B.

     Finish the drilled hole

    C.

     Correct the hole

    D.

     Enlarge the existing hole

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  11. In a center lathe, the cutting tool is fed in _________ with reference to the lathe axis.

  12. A.

     Cross direction only

    B.

     Longitudinal direction only

    C.

     Both cross and longitudinal direction

    D.

     Any direction

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  13. When the metal is removed by erosion caused by rapidly recurring spark discharges between the tool and work, the process is known as

  14. A.

     Electrochemical machining

    B.

     Electro-discharge machining

    C.

     Ultrasonic machining

    D.

     None of these

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  15. The operation in which oil is permeated into the pores of a powder metallurgy product is known as

  16. A.

     Mixing

    B.

     Sintering

    C.

     Impregnation

    D.

     Infiltration

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  17. The strength of a brazed joint

  18. A.

     Decreases with increase in gap between the two joining surfaces

    B.

     Increases with increase in gap between the two joining surfaces

    C.

     Decreases up to certain gap between the two joining surfaces beyond which it increases

    D.

     Increases up to certain gap between the two joining surfaces beyond which it decreases

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  19. The rake angle of a single point cutting tool corresponds to _________ of a twist drill.

  20. A.

     Lip clearance angle

    B.

     Helix angle

    C.

     Point angle

    D.

     Chisel edge angle

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