All India Civil Engineering (CE) Group

Which of the following irrigation method is the most suitable for the orchards?
  • a)
    Check flooding
  • b)
    Basin flooding
  • c)
    Furrow irrigation
  • d)
    Sprinkler irrigation
Correct answer is option 'B'. Can you explain this answer?

Saptarshi Nair answered  •  8 hours ago
Basin flooding
Basin flooding is the most suitable irrigation method for orchards due to the following reasons:
- Water Efficiency: Basin flooding allows water to be applied directly to the root zone of the trees, minimizing water loss through evaporation or runoff. This ensures that the trees receive an adequate amount of water for their growth and development.
- C
... more With basin flooding, water can be applied in controlled amounts, preventing overwatering or underwatering of the trees. This helps in maintaining optimal soil moisture levels for the orchard.
- Reduced Weed Growth: By flooding the basins around the trees, weed growth can be suppressed as the water suffocates the weeds. This reduces competition for water and nutrients, allowing the orchard trees to thrive.
- Ease of Application: Basin flooding is a simple and easy method to apply water to orchards. It does not require complex equipment or infrastructure, making it a cost-effective and accessible option for orchard irrigation.
In conclusion, basin flooding is the most suitable irrigation method for orchards as it promotes water efficiency, controlled water application, reduced weed growth, and ease of application. By implementing basin flooding, orchard growers can ensure the optimal growth and productivity of their trees.

Priming in necessary in
  • a)
    centrifugal pumps to lift water from a greater depth
  • b)
    centrifugal pumps to remove air in the suction pipe and casing
  • c)
    hydraulic turbine to remove air in the turbine casing
  • d)
    hydraulic turbine to increase the speed of turbine and to generate more power
Correct answer is option 'B'. Can you explain this answer?

Saptarshi Nair answered  •  8 hours ago
Priming in Centrifugal Pumps:
Priming is necessary in centrifugal pumps to remove air in the suction pipe and casing. Here is why:
- Removing Air: When a centrifugal pump is initially started, it needs to remove any air present in the suction pipe and casing to create a vacuum and allow water to be drawn into the pump. If air is not removed, it can cause cavitation and reduce the
... more

A granular soil has a saturated unit weight of 20 kN/m3 and an effective angle of shearing resistance of 30°. The unit weight of water is 9.81 kN/m3. A slope is to be made on this soil deposit in which the seepage occurs parallel to the slope up to the free surface. Under this seepage condition for a factor of safety of 1.5, the safe slope angle (in degree, round off to 1 decimal place) would be ______.
    Correct answer is between '10.8,11.3'. Can you explain this answer?

    Saptarshi Nair answered  •  8 hours ago
    Given Data:
    Saturated unit weight of soil (γ_sat) = 20 kN/m3
    Effective angle of shearing resistance (φ) = 30°
    Unit weight of water (γ_w) = 9.81 kN/m3
    Factor of safety (FS) = 1.5

    Calculations:
    1. Calculate the submerged unit weight of soil:
    γ_sub = γ_sat - γ_w
    γ_sub = 20 - 9.81
    γ_sub = 10.19 kN/m3
    2. Calculate the critical height
    ... more

    The thickness of the flange of a Tee beam of a ribbed slab is assumed as
    A)width of the rib
    B)depth of the rib
    C)thickness of the concrete topping
    d) half the thickness of the rib twice the width of th
    ... more

    Tanishq Rane answered  •  15 hours ago
    Calculation of Tee Beam Flange Thickness in Ribbed Slab

    Assumptions:
    - Tee beam is used in a ribbed slab construction.
    - The thickness of the flange is to be determined.

    Given:
    - Tee beam in ribbed slab construction.

    Formula:
    - The thickness of the flange is assumed as half the thickness of the rib.

    Calc
    ... more
    - The thickness of the flange is half the thickness of the rib. This assumption is made to ensure that the flange is adequately sized to support the loads and provide the required strength in the ribbed slab construction.

    Answer:
    - Therefore, the correct assumption for the thickness of the flange of a Tee beam in a ribbed slab is half the thickness of the rib. This assumption ensures proper structural integrity and load-bearing capacity in the ribbed slab construction.

    The assumption of Boussinesq equation is that the soil is _____
    • a)
      non-homogeneous
    • b)
      homogeneous
    • c)
      plastic
    • d)
      semi-plastic
    Correct answer is option 'B'. Can you explain this answer?

    Ameya Sen answered  •  15 hours ago
    Homogeneity Assumption in Boussinesq Equation
    The assumption of the Boussinesq equation is that the soil is homogeneous. This assumption plays a crucial role in simplifying the analysis of stress distribution in soil under a loaded area.

    Homogeneous Soil
    - Homogeneous soil implies that the soil properties such as density, stiffness, and strength remain constant t
    ... more

    An equipment has been purchased at an initial cost of 1,60,000 and has an estimated salvage value of 10,000. The equipment has an estimated life of 5 years. The difference between the book values (in', in integer) obtained at the end of 4th year using straight-line method and sum of years digit method of depreciation is _________.
      Correct answer is '20,000'. Can you explain this answer?

      Ameya Sen answered  •  15 hours ago
      Calculation of Book Values using Different Depreciation Methods:
      - Straight-Line Method:
      - Annual Depreciation = (Initial Cost - Salvage Value) / Useful Life
      - Annual Depreciation = (1,60,000 - 10,000) / 5 = 30,000
      - Book Value at the end of 4th year = Initial Cost - (Annual Depreciation * Number of Years)
      - Book Value at the end of 4th year = 1,60,000 -
      ... more

      An infinitely long slope is made up of a c-φ soil having the properties: cohesion, C = 20 kPa, and dry unit weight, γd = 16 kN/m3. The angle of inclination and critical height of the slope are 40° and 5 m, respectively. To maintain the limiting equilibrium, the angle of internal friction of the soil (in degrees) is ________
      • a)
        22.4° 
      • b)
        20.8° 
      • c)
        19.4° 
      • d)
        None of the above
      Correct answer is option 'A'. Can you explain this answer?

      Ameya Sen answered  •  15 hours ago
      Calculating the angle of internal friction:
      - Given data:
      - Cohesion, C = 20 kPa
      - Dry unit weight, γd = 16 kN/m3
      - Angle of inclination, θ = 40°
      - Critical height, H = 5 m
      - The factor of safety (F) for a slope is given by:
      F = c / (H * γd * tan(φ))
      - At limiting equilibrium, F = 1, so:
      1 = 20 / (5 * 16 * tan(&phi
      ... more

      If a rectangular prestressed beam of an effective span of 5 meters and carrying a total load 3840 kg/m, is designed by the load balancing method, the central dip of the parabolic tendon should be
      a) 5 cm
      b)10 cm ... more

      Sneha Nair answered  •  16 hours ago
      - Central Dip Calculation using Load Balancing Method:
      The central dip of the parabolic tendon in a prestressed beam can be calculated using the load balancing method. In this method, the total load carried by the beam is balanced by the tendon force.

      Given data:
      - Effective span = 5 meters
      - Total load = 3840 kg/m

      Step 1: Calculation of Total Load:... more

      As per ISS the specific gravity of soil is determined at
      • a)
        10ºC
      • b)
        17ºC
      • c)
        27ºC
      • d)
        47ºC
      Correct answer is option 'C'. Can you explain this answer?

      Simran Saha answered  •  18 hours ago
      Specific Gravity of Soil Determination
      Determining the specific gravity of soil is an essential step in geotechnical engineering as it helps in evaluating the density and composition of the soil. The specific gravity of soil is defined as the ratio of the mass of a given volume of soil solids to the mass of an equal volume of water at a specified temperature.

      Formula for
      ... more
      The specific gravity of soil is calculated using the formula:
      \[ Specific\ Gravity = \frac{Weight\ of\ solids\ in\ soil}{Weight\ of\ equal\ volume\ of\ water} \]

      Importance of Specific Gravity
      - Helps in determining the void ratio and porosity of the soil.
      - Aids in classifying the soil based on its composition and density.
      - Essential for calculating various soil properties like unit weight, permeability, and compaction characteristics.

      ISS Recommendation
      According to ISS (Indian Standard Specification), the specific gravity of soil is determined to be around 27. This value is an average estimate and may vary depending on the type and composition of the soil being tested.
      Therefore, the correct answer to the question is option 'C' - 27. This value serves as a reference point for geotechnical engineers and researchers when analyzing soil properties and designing structures based on soil mechanics principles.

      For stairs spanning horizontally, the minimum waist provided is
      a) 4 cm
      b) 6 cm
      c)8 cm
      d) 10 cm
      e) 12 cm.?

      Gowri Singh answered  •  19 hours ago
      Answer:
      Minimum Waist for Horizontal Spanning Stairs
      Minimum Waist Requirement:
      - The minimum waist provided for stairs spanning horizontally is **6 cm**.
      Explanation:
      Importance of Waist in Stairs:
      - Waist in stairs refers to the thickness of the waist slab or the waist of the stringer. It is an important structural component that provides support and stability
      ... more

      4. For stairs spanning horizontally, the minimum waist provided is?

      Nabanita Saha answered  •  19 hours ago
      Minimum Waist for Horizontally Spanning Stairs
      To ensure the safety and stability of stairs spanning horizontally, a minimum waist should be provided. The waist of a stair refers to the thickness of the stair slab or tread.

      Importance of Minimum Waist
      The minimum waist is crucial for distributing the load of the stairs evenly and preventing any structural failur
      ... more

      An R.C.C. column is treated as long if its slenderness ratio is greater than
      a) 30
      b) 35
      c)40
      d)50
      e) 60?

      Preethi Choudhury answered  •  22 hours ago
      Slenderness Ratio of an R.C.C. Column
      The slenderness ratio of an R.C.C. column is defined as the effective length divided by the least radius of gyration. It is a measure of how slender or stocky a column is. A column is considered long if its slenderness ratio is greater than a certain value.

      Threshold for Long Column
      The threshold for considering an R.C.C. col
      ... more

      Dupit’s assumptions are valid for
      • a)
        artesian aquifer
      • b)
        confined aquifer
      • c)
        leaky aquifer
      • d)
        unconfined aquifer
      Correct answer is option 'D'. Can you explain this answer?

      Navya Sarkar answered  •  yesterday
      Unconfined Aquifer
      An unconfined aquifer is a type of aquifer where the water table is not confined by impermeable layers of rock or sediment. In this type of aquifer, water can flow freely in and out of the aquifer, making it more vulnerable to contamination and changes in water levels.

      Dupit's assumptions
      Dupit's assumptions are valid for unconfined aquifers. T
      ... more

      Which of the following process is not adopted in oxidation ditches?
      • a)
        Adsorption
      • b)
        Desorption
      • c)
        Oxidation
      • d)
        Decomposition
      Correct answer is option 'B'. Can you explain this answer?

      Navya Sarkar answered  •  yesterday
      Desorption in Oxidation Ditches
      Desorption is not a process adopted in oxidation ditches. Let's break down the processes commonly used in oxidation ditches:

      Adsorption:
      - In oxidation ditches, organic matter and pollutants are adsorbed onto the surface of microorganisms present in the system.
      - This helps in the removal of contaminants from the wastewater by
      ... more

      The top width and the depth of flow in a triangular channel were measured as 3 m and 1 m respectively. The measured velocities on the centre line at the water surface 0.2 m and 0.8 m below the surface are 0.9 m/s, 0.8 m/s and 0.5 m/s respectively. Using a two-point method of velocity measurement, the discharge (in m3/s) in the channel is __________. (Report your answer upto two place of decimal).
      Correct answer is 'Range: 0.97 to 0.98'. Can you explain this answer?

      Navya Sarkar answered  •  yesterday
      Calculation of Discharge in Triangular Channel
      - Given Data:
      - Top width (T) = 3 m
      - Depth of flow (D) = 1 m
      - Velocities at 0.2 m and 0.8 m below the surface = 0.9 m/s, 0.8 m/s, 0.5 m/s
      - Two-point Method:
      - The discharge in a channel can be calculated using the two-point method formula:
      - Q = A * (V1 + V2) / 2
      - where Q is the di
      ... more

      Navya Sarkar answered  •  yesterday
      Squash Load in Design of Axial Compression Member
      The term "squash load" refers to the load that causes a member to fail due to compressive forces. This is a critical consideration in the design of axial compression members, such as columns in structures.

      Design of Concrete Structures
      In the design of concrete structures, it is important to consider the squash lo
      ... more

      According to Bligh, a vertical cut-off at U/s end of the floor is less useful than the one at the D/s end of the floor.
      • a)
        True
      • b)
        False
      Correct answer is option 'B'. Can you explain this answer?

      Sanchita Pillai answered  •  yesterday
      Explanation:

      Vertical cut-offs:
      - Vertical cut-offs are installed to prevent seepage through the foundation of a dam or any other structure.
      - They help in reducing the uplift pressure and potential failure modes.

      Location of the cut-off:
      - Bligh suggests that a vertical cut-off at the downstream (D/s) end of the floor is more useful than t
      ... more

      Owing to a sudden closure of turbines in a powerhouse:
      • a)
        A positive surge will occur in head race channel with surge front moving downstream
      • b)
        A positive surge will occur in head race channel with surge front moving upstream
      • c)
        A negative surge will occur in head race channel with surge front moving up stream
      • d)
        A negative surge will occur In head race channel with surge front moving downstream
      Correct answer is option 'B'. Can you explain this answer?

      Sanchita Pillai answered  •  yesterday
      Explanation:

      Sudden Closure of Turbines:
      - When turbines in a powerhouse are suddenly closed, it causes a rapid decrease in flow and pressure within the system.
      - This sudden closure can result in a surge or water hammer effect in the head race channel.

      Positive Surge in Head Race Channel:
      - Due to the sudden closure of turbines, a positive
      ... more

      Which one of the following conditions is taken to fulfill the permeability condition in the design of filter material for subsurface drainage in roads?
      • a)
      • b)
      • c)
      • d)
      Correct answer is option 'B'. Can you explain this answer?

      Pioneer Academy answered  •  yesterday
      The filter material should be such that it is sufficiently permeable and for this purpose, the permeability ratio should be greater than 5. The permeability ratio is defined as follows
      Permeability ratio = (15 percent of the filter material) / (15 percent size of the foundation material)

      Which of the following is NOT a characteristic of the liquid used in a manometer?
      • a)
        The liquid should stick on the walls
      • b)
        High viscosity
      • c)
        Low surface tension
      • d)
        It should be immiscible
      Correct answer is option 'B'. Can you explain this answer?

      Jaya Yadav answered  •  yesterday
      High Viscosity is NOT a characteristic of the liquid used in a manometer

      Explanation:
      Manometers are devices used to measure pressure by balancing the weight of a column of liquid against the pressure of a gas. The liquid used in a manometer should have certain characteristics to ensure accurate and reliable measurements. Here are the characteristics of the liquid use
      ... more

      Modern pile driving method was first invented by ______
      • a)
        Romans
      • b)
        Nasmyth
      • c)
        Terzaghi
      • d)
        Vitruvious
      Correct answer is option 'B'. Can you explain this answer?

      Jaya Yadav answered  •  yesterday
      Modern pile driving method was first invented by Nasmyth

      James Nasmyth
      James Nasmyth, a Scottish engineer and inventor, is credited with inventing the modern pile driving method. He was born in 1808 and is best known for his invention of the steam hammer, which revolutionized the pile driving process.

      Invention of the Steam Hammer
      Nasmyth's inve
      ... more

      The constituent of cement which is responsible for all the undesirable properties of cement is A. Di-calcium silicate B. Tri-calcium silicate C. Tri-calcium aluminate D. Tetra calcium alumino ferrite?

      Jhanvi Choudhary answered  •  2 days ago
      Tri-calcium aluminate (C3A)
      The constituent of cement responsible for all the undesirable properties is tri-calcium aluminate (C3A). It is one of the four main components of cement, along with di-calcium silicate (C2S), tri-calcium silicate (C3S), and tetra-calcium alumino ferrite (C4AF). However, C3A is known to cause various issues in cement due to its reactivity and hydration charac
      ... more

      Resource smoothing means
      • a)
        Optimization and economical utilization of resources
      • b)
        gradual increase in resources
      • c)
        adjustment of resources to have the least variations
      • d)
        complete revamping of resources to suit the requirements
      Correct answer is option 'C'. Can you explain this answer?

      Mahesh Nair answered  •  2 days ago
      Resource Smoothing

      Definition:
      Resource smoothing refers to the adjustment of resources to have the least variations in order to achieve a more consistent flow of work and prevent peaks and valleys in resource utilization.

      Explanation:
      - When resources are smoothed, the goal is to allocate resources in such a way that there are no sudden or extr
      ... more

      The maximum error (mm) on the drawing should not be greater than
      (a) 0.01
      (b) 0.025
      (c) 0.25
      (d) 0.1?

      Aarav Kulkarni answered  •  2 days ago
      First, let's understand what maximum error means in the context of a drawing. Maximum error refers to the maximum allowable difference between the actual measurement and the measured value on a drawing. It is important to ensure that the maximum error is within acceptable limits to maintain the accuracy and precision of the drawing.
      - Interpreting the given options:
      Let's analyze
      ... more
      Fetching relevant content for you