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    Mechanical Engineering Quiz - Set 08


    1. Carbon tool steels have low heat and wear resistance.
    Correct
    Incorrect

    2. In a jet engine, the compression varies as the square of the speed.
    Correct
    Incorrect

    3. The seat belt will move out smoothly when pulled out slowly, but it will lock when pulled quickly.
    Agree
    Disagree

    4. The pressure ratio in a centrifugal compressor can be increased by increasing the tip speed and lowering the inlet temperature.
    Correct
    Incorrect

    5. Hindalium is an alloy of aluminium and magnesium with a small quantity of chromium.
    Agree
    Disagree

    6. Thermal conductivity of air increases with rise in temperature.
    Correct
    Incorrect

    7. A draft tube is used with impulse turbines.
    Yes
    No

    8. The unit million electron volts (Mev) is commonly used to measure the nuclear energy.
    True
    False

    9. Monte Carlo solution in queuing theory is extremely useful in queuing problems that can not be analysed mathematically.
    Agree
    Disagree

    10. Back rake angle of a single point tool is the angle by which the face of the tool is inclined towards back.
    Agree
    Disagree

    11. In a reciprocating steam engine, the heat energy in the steam is converted into mechanical work by the to and fro motion of the piston.
    Agree
    Disagree

    12. The heating and expanding of a gas is called thermodynamic system.
    Yes
    No

    13. In natural circulation steam boilers, the circulation of water is by convection currents which are set up during the heating of water.
    Correct
    Incorrect

    14. Normal time is the ratio of representative time to the rating factor.
    True
    False

    15. The knocking tendency in spark ignition engines can be decreased by adding dopes like tetra ethyl lead and ethylene di-bromide.
    Agree
    Disagree

    16. A hydraulic intensifier is a device used to increase the intensity of pressure of water by means of energy available from a large quantity of water at a low pressure.
    Correct
    Incorrect

    17. At 100% relative humidity, wet bulb temperature, dry bulb temperature, dew point temperature and saturation temperature are equal.
    Correct
    Incorrect

    18. Spheroidal grey cast iron has graphite flakes.
    True
    False

    19. Free air is the air at atmospheric conditions at any specific location.
    True
    False

    20. When cornering, the differential generates a difference in the speed of the left and right wheels.
    True
    False

         Score =

    Correct answers:


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    Item Reviewed: Mechanical Engineering Quiz - Set 08 Rating: 5 Reviewed By: Pranab Debnath
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