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  • Question
  • A roadstead :


  • Options
  • A. is a protected area of water where boats can move safely
  • B. is the end of the road at the harbour
  • C. may be protected by break water walls
  • D. none of these.

  • Correct Answer
  • is a protected area of water where boats can move safely 


  • Docks and Harbours problems


    Search Results


    • 1. Depth of borings for soil investigation, is generally kept below low water level

    • Options
    • A. 30 m
    • B. 35 m
    • C. 45 m
    • D. 40 m
    • Discuss
    • 2. Pick up the incorrect statement from the following:

    • Options
    • A. As a wave of sea water approaches the coast line, it is generally accompanied by a drift of water in the direction of wave advance
    • B. The on-shore wind helps to produce wave action as well as rise of M.S.L.
    • C. A falling hydraulic gradient occurs in the direction of the wave
    • D. The wave while receding carries finer particles out to deep water.
    • Discuss
    • 3. A harbour is a place where

    • Options
    • A. ships get shelter and protection against destructive forces due to sea waves
    • B. facilities are provided for receiving cargo and passengers
    • C. port buildings are constructed for commercial purposes
    • D. all the above.
    • Discuss
    • 4. Littoral drift

    • Options
    • A. is the raised line of sand, parallel to the sea coast
    • B. is the slow movement of surface water at sea caused by the wind
    • C. is a current parallel to the shore, caused due to tangential component of the wind
    • D. is a current perpendicular to the shore line caused due to wind.
    • Discuss
    • 5. Surf zone is :

    • Options
    • A. the fathom line of 10 m depth
    • B. the fathom line of 5 m depth
    • C. the swell of the sea breaking on the shore or reefs
    • D. the coast line attacked by the waves.
    • Discuss
    • 6. Which one of the following errors is produced by platform characteristics of the sensor?

    • Options
    • A. altitude variation
    • B. altitude
    • C. orbit drift
    • D. All of these
    • Discuss
    • 7. The spectral region of the electromagnetic radiation which passes through the atmosphere without much attenuation is known as:

    • Options
    • A. ozone hole
    • B. atmospheric window
    • C. ozone window
    • D. black hole
    • Discuss
    • 8. The phase difference of the waves 1 and 2 at A in the given figure is :

    • Options
    • A. ?/4
    • B. ?/2
    • C. ?
    • D. 3?/2
    • Discuss
    • 9. If 0 is the angle of scan measured from the nadir, the ground distance swept by the sensor IFOV is proportional to :

    • Options
    • A. sin2?
    • B. cos2?
    • C. sec2?
    • D. tan2?
    • Discuss
    • 10. Pick up the correct statement from the following :

    • Options
    • A. When the electric field oscillates in the direction of the electric vector, a plane polarised wave is formed.
    • B. When the electric vector is in the plane of incidence, vertical polarisation is formed.
    • C. When the electric vector is at right angles to the plane of incidence, horizontal polarization wave is formed.
    • D. The plane containing the incident ray and normal to the reflecting surface at the point of incidence is called the plane of incidence.
    • E. All of these
    • Discuss


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