Home / Mechanical Engineering / Manufacturing and Production Technology :: section-1

Mechanical Engineering :: Manufacturing and Production Technology

  1. The method of grinding used to produce internal cylindrical holes and tapers, is

  2. A.

     Internal cylindrical grinding

    B.

     Form grinding

    C.

     External cylindrical grinding

    D.

     Surface grinding

    View Answer

    Workspace

    Discuss Discuss in Forum


  3. Glazing in grinding wheels takes place when the

  4. A.

     Wheel is too hard or wheel revolves at a very high speed

    B.

     Wheel is too soft or wheel revolves at a very slow speed

    C.

     Wheel is too hard and wheel revolves at very slow speed

    D.

     Wheel is too soft and wheel revolves at a very high speed

    View Answer

    Workspace

    Discuss Discuss in Forum


  5. Grinding wheels should be tested for balance

  6. A.

     Only at the time of manufacture

    B.

     Before starting the grinding operation

    C.

     At the end of grinding operation

    D.

     Occasionally

    View Answer

    Workspace

    Discuss Discuss in Forum


  7. If the diameter of the hole is subject to considerable variation, then for locating in jigs and fixtures, the pressure type of locator used is

  8. A.

     Conical locator

    B.

     Cylindrical locator

    C.

     Diamond pin locator

    D.

     Vee locator

    View Answer

    Workspace

    Discuss Discuss in Forum


  9. The tool life is affected by

  10. A.

     Depth of cut

    B.

     Cutting speed

    C.

     Feed

    D.

     All of these

    View Answer

    Workspace

    Discuss Discuss in Forum


  11. The abrasive slurry used in ultrasonic machining contains fine particles of

  12. A.

     Aluminium oxide

    B.

     Boron carbide

    C.

     Silicon carbide

    D.

     Any one of these

    View Answer

    Workspace

    Discuss Discuss in Forum


  13. Fixtures are used

  14. A.

     For holding and guiding the tool in drilling, reaming or tapping operations

    B.

     For holding the work in milling, grinding, planing or turning operations

    C.

     To check the accuracy of workpiece

    D.

     None of the above

    View Answer

    Workspace

    Discuss Discuss in Forum


  15. Which of the following is the correct data structure for solid models?

  16. A.

     Solid part - faces - edges - vertices

    B.

     Solid part - edges - faces - vertices

    C.

     Vertices - edges - faces - solid parts

    D.

     Vertices - faces- edges - solid parts

    View Answer

    Workspace

    Discuss Discuss in Forum


  17. The cutting fluid mostly used for machining alloy steels is

  18. A.

     Water

    B.

     Soluble oil

    C.

     Dry

    D.

     Sulphurised mineral oil

    View Answer

    Workspace

    Discuss Discuss in Forum


  19. Two streams of liquid metal which are not hot enough to fuse properly result into a casting defect known as

  20. A.

     Cold shut

    B.

     Swell

    C.

     Sand wash

    D.

     Scab

    View Answer

    Workspace

    Discuss Discuss in Forum