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Civil Engineering :: GATE Exam Questions

  1. If the pump head is 75 m, discharge is 0.464 m3/s and the motor speed is 1440 rpm at rated condition, the specific speed of the pump is about

  2. A.
    4
    B.
    26
    C.
    38
    D.
    1440

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  3. When a retaining wall moves away from the backfill, the pressure exerted on the wall is termed as

  4. A.
    passive earth pressure
    B.
    swelling pressure
    C.
    pore pressure
    D.
    active earth pressure

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  5. Two primary air pollutants are

  6. A.
    sulphur oxide and ozone
    B.
    nitrogen oxide and peroxyacetylnitrate
    C.
    sulphur oxide and hydrocarbon
    D.
    ozone and peroxyacetynitrate

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  7. Flocculation is a process

  8. A.
    that removes algae from stabilization pond effluent
    B.
    that promotes the aggregation of small particles into larger particles to enhance their removal by gravity
    C.
    both (a) and (b)
    D.
    none of these.

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  9. The effective length of a circular electric pole of length L and constant diameters erected on ground is,

  10. A.
    0.80 L
    B.
    1.20 L
    C.
    1.50 L
    D.
    2.00 L

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  11. The focal length of the object glass of a tacheometer is 200 mm, the distance between the vertical axis of the tachometer and the optical centre of the object glass is 100 mm and the spacing between the upper and lower line of the diaphragm axis is 4 mm. With the line of collima-tion perfectly horizontal, the staff intercepts are 1 m (top), 2 m (middle), and 3 m (bottom). The horizontal distance (m) between the staff and the instrument station is

  12. A.
    100.3
    B.
    103.0
    C.
    150.0
    D.
    153.0

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  13. Allowable average shear stress in an un-stiffened web for beams made of steel of grade 250 N/mm2 is :

  14. A.
    250 N/mm2
    B.
    165 N/mm2
    C.
    150 N/mm2
    D.
    100 N/mm2

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  15. The superelevation needed for a vehicle travelling at a speed of 60 kmph on a curve of radius 128 m on a surface with a coefficient of friction of 0.15 is :

  16. A.
    0.71
    B.
    0.81
    C.
    0.91
    D.
    0.61

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  17. The plastic modulus of a section is 4.8 x 10-4 m3. The shape factor is 1.2. The plastic moment capacity of the section is 120 kN.m. The yield stress of the material is

  18. A.
    100 MPa
    B.
    240 MPa
    C.
    250 MPa
    D.
    300 MPa

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  19. A propped cantilever beam in shown in the below figure. The plastic moment capacity of the beam is M0. The collapse load P is

  20. A.
    4 M0/L
    B.
    6 M0/L
    C.
    8 M0/L
    D.
    12 M0/L

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