Fluid Mechanics Solved MCQ | Part 1

1. A cylindrical water tank has a 2 m height and 2 m diameter. The water is filled up in the tank. The total weight of the water is (in kg). if the

Fluid Mechanics Solved Practice Questions | MCQ | GATE/ESE/PSU/NPTEL | Part 1 | By Akhand Dutta



Fluid Mechanics GATE Solved Questions | MCQ | Part 1






    1. A cylindrical water tank has a 2 m height and 2 m diameter. The water is filled up in the tank. The total weight of the water is (in kg). if the density of water is 1000 kg/m3.


    • A. 6283.18
    • B. 3141.59
    • C. 1570.80
    • D. 2000
     

    6283.18



    2. In the tank given in question 1, a small orifice is constructed to release the water. The orifice has a diameter of 2cm. Neglecting minor entry loss, the velocity of the flow (m/s) in the orifice is_______


    • A. 3.132
    • B. 6.264
    • C. 9.396
    • D. 12.528
     

    6.264



    3. As given in question 1 and question 2, the discharge in the orifice is ______ (in m3/s)


    • A. 0.19
    • B. 0.019
    • C. 0.0019
    • D. 1.9
     

    0.0019



    4. The water tank mentioned in question1 is placed on 6m height building. A pipe is fitted with the orifice of the tank to the ground. What is velocity of the flow in the pipe at the ground level (m/s).


    • A. 3.132
    • B. 6.264
    • C. 9.396
    • D. 12.528
     

    12.528



    5. A river flows with a velocity of 3m/s. A boat of maximum velocity 5m/s needs to travel in the river upstream direction. The travel distance is 100km. the travel time of the boat is_______ (hours)


    • A. 833.33
    • B. 13.89
    • C. 3.472
    • D. None
     

    13.89



    6. The boat given in question-5 travels downstream in a distance of 100km. The travel time in hours is


    • A. 3.472
    • B. 3.968
    • C. 5.567
    • D. 9.259
     

    3.472



    7. The cross section of the river is approximated as given in the figure: Estimate the discharge (flow rate in m3/s) of the river flowing with a velocity 2m/s.

    Fluid Mechanics GATE Solved Questions | MCQ | Part 1


    • A. 5000
    • B. 22500
    • C. 2812.5
    • D. 5625
     

    5625



    8. Reynolds number for a pipe of diameter ‘D’ is defined as


    • A. 𝝆VD/ μ
    • B. νD/𝝆
    • C. V2D/ g
    • D. ν3D/𝝆g
     

    𝝆VD/ μ



    9. Atmospheric pressure is measured in terms of


    • A. Dyne/cm2
    • B. N/m2
    • C. bar
    • D. atm
    • all of the above
    • none of the above
     

    all of the above



    10. As given in below figure what would be pressure at point A in kg/m2

    Fluid Mechanics GATE Solved Questions | MCQ | Part 1


    • A. 0
    • B. 7800
    • C. 5100
    • D. 2700
     

    5100



    11. If, for a fluid in motion, pressure at a point is same in all directions, then the fluid is


    • A. A real fluid
    • B. A Newtonian fluid
    • C. An ideal fluid
    • D. A non-Newtonian fluid
     

    A real fluid



    12. A floating body with its center of gravity at G, center of buoyancy at B and metacenter at M is stable when


    • A. BM>BG
    • B. BM=BG
    • C. BM less than BG
    • D. Cannot say
     

    BM>BG



    *Source- Books, Internet, NPTEL, Self-Analysis

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    "Meet Mr. Akhand Dutta, the visionary Founder and Owner of CEWA (Civil Engineering With Akhand Dutta). Currently, The Placement Coordinator for Structural Engineering at the prestigious National Institute of Technology, Kurukshetra. With a lif…

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