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    Mechanical Engineering Quiz - Set 05


    1. In mechanical refrigeration system, the refrigerant occurs as liquid between condenser and expansion valve.
    True
    False

    2. In a four stroke cycle petrol engine, the charge is compressed when both the valves (i.e. inlet valve and exit valve) are closed.
    Agree
    Disagree

    3. PERT is an event oriented technique.
    Correct
    Incorrect

    4. The efficiency of a centrifugal pump will be maximum when the blades are bent backward.
    Yes
    No

    5. The water, alcohol and ammonia have same refrigerating effect at different altitudes.
    Yes
    No

    6. In nuclear power plants, due to reflector, less fuel is needed to generate sufficient neutrons to sustain a chain reaction.
    Yes
    No

    7. According to Gay-Lussac law, the absolute pressure of a given mass of a perfect gas varies _________ as its absolute temperature, when the volume remains constant.
    Directly
    Indirectly

    8. Light weight substances cannot be effective moderators.
    True
    False

    9. The discharge of a centrifugal pump working under constant head ________ with the speed.
    Increases
    Decreases

    10. The angle included between the two lips projected upon a plane parallel to the drill axis and parallel to the two cutting lips, is called helix angle.
    Correct
    Incorrect

    11. The velocity of tool relative to the workpiece is known as cutting velocity.
    True
    False

    12. In case of solids, the heat transfer takes place according to radiation.
    Correct
    Incorrect

    13. In a centrifugal compressor, the air enters the impeller axially and leaves the vane radially.
    Yes
    No

    14. A plug gauge is used to check the diameter of shafts and studs.
    Correct
    Incorrect

    15. When the gas is heated at constant volume, the heat supplied increases the internal energy of the gas.
    True
    False

    16. When the speed of the pump increases, its net positive suction head (NPSH) requirement decreases.
    Agree
    Disagree

    17. Sampling method of determining standard time is profitable for long cycle operation.
    Correct
    Incorrect

    18. In oblique cutting system, the maximum chip thickness occurs at the middle.
    Correct
    Incorrect

    19. The universal gas constant of a gas is the product of molecular mass of the gas and the gas constant.
    Correct
    Incorrect

    20. In orthogonal cutting system, the maximum chip thickness occurs at the middle.
    Correct
    Incorrect

         Score =

    Correct answers:


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    Item Reviewed: Mechanical Engineering Quiz - Set 05 Rating: 5 Reviewed By: Pranab Debnath
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