GATE Mechanical Practice Test

9 Questions | Total Attempts: 294

SettingsSettingsSettings
Practice Test Quizzes & Trivia

Royalmechanicalbuzz. Blogspot. Com


Questions and Answers
  • 1. 
    The compression ratio of an SI engine is in the range of
    • A. 

      4 to 6

    • B. 

      6 to 10

    • C. 

      6 to 8

    • D. 

      10 to 14

  • 2. 
    The ignition quality of diesel fuel is indicated by
    • A. 

      Octane number

    • B. 

      Cetane number

    • C. 

      Flash point

    • D. 

      Fire point

  • 3. 
    When air is adiabatically saturated, the temperature attained is
    • A. 

      Dew point temperature

    • B. 

      Wet bulb temperature

    • C. 

      Dry bulb temperature

    • D. 

      Triple point temperature

  • 4. 
    Cast steel is crankshaft is hardened by
    • A. 

      Nitriding

    • B. 

      Normalising

    • C. 

      Carburising

    • D. 

      Induction heating

  • 5. 
    The alloying elements mainly used to improve the endurance strength of steel material is
    • A. 

      Nickle

    • B. 

      Vanadium

    • C. 

      Molybdenum

    • D. 

      Tungsten

  • 6. 
    The moving mandrel is used in
    • A. 

      Tube drawing

    • B. 

      Wire drawing

    • C. 

      Extrusion

    • D. 

      Spinning

  • 7. 
    In metals subjected to cold working, strain  hardening effect due to
    • A. 

      Slip mechanism

    • B. 

      Twinning mechanism

    • C. 

      Dislocation mechanism

    • D. 

      Fracture mechanism

  • 8. 
    Cold working of metals of metals increases
    • A. 

      Tensile strength

    • B. 

      Hardness

    • C. 

      Yield strength

    • D. 

      All of these

  • 9. 
    A streamline and an equipotential line in a flow field
    • A. 

      Are parallel to each other

    • B. 

      Are perpendicular to each other

    • C. 

      Intersect at an acute angle

    • D. 

      Are identical

Back to Top Back to top