Sagnik Sen

EduRev GATE

Sagnik Sen
EduRev GATE
Content, tests & courses saved by you for accessing later. (visible to you only)
Discussed Questions
Sagnik Sen upvoted   •  3 weeks ago

The dowel is used in rigid pavements for_______
  • a)
    Resisting tensile stresses
  • b)
    Resisting bending stresses 
  • c)
    Resisting shear stresses
  • d)
    Transferring load from one portion to another.
Correct answer is option 'D'. Can you explain this answer?

Crack Gate answered
Dowel Bar:
Dowel bar is a steel bar provided in rigid pavements in the direction of traffic i.e. in the longitudinal direction.
Functions of Dowel bar:
  1. To transfer loads of wheel from one slab to another.
  2. To reduce the differential deflection between slabs.

Hence, Dowel bars are provided in jointed concrete pavements to transfer load from one slab to another slab.
Important points about Dowel bar:
1. Analysis is given by Bradbury.
2. Following stresses are developed in Dowel bar:
a. Shear Stress
b. Bending Stress
c. Bearing Stress
3. Diameter of Dowel bar > 25 mm.

Sagnik Sen upvoted   •  Feb 24, 2025

The boundary layer on a flat plate is called laminar boundary layer if
  • a)
    Re is less than 2000
  • b)
    Re is less than 4000
  • c)
    Re is less than 5 × 105
  • d)
    None of these
Correct answer is option 'C'. Can you explain this answer?

Reynold's number: 
  • It is a dimensionless number that determines the nature of the flow of liquid through a pipe or flat plate. 
  • It is defined as the ratio of the inertial force to the viscous force for a flowing fluid.
  • Reynold's number is written as Re.
Flat plate flow:
  • If Reynold's number lies below 5 × 105, then the flow of liquid is streamlined or laminar.
  • If Reynold's number is greater than or equal to 5 × 105, the flow of liquid is turbulent.

Sagnik Sen upvoted   •  Feb 12, 2025

Which of the following is correct if they are arranged in decreasing order of heat of hydration
  • a)
    C3A > C4AF> C3S> C2S
  • b)
    C3A > C4AF> C2S> C3S
  • c)
    C3A > C3S> C2S> C4AF
  • d)
    C3A > C3S > C4AF > C2S
Correct answer is option 'D'. Can you explain this answer?

Heat of hydration is the heat generated when cement reacts with water during the setting process. The compounds mentioned, C3A (tricalcium aluminate), C4AF (tetracalcium aluminoferrite), C3S (tricalcium silicate), and C2S (dicalcium silicate), are the four main components of Portland cement.
The heat of hydration follows the general order:
  1. C3A - Tricalcium aluminate has the highest heat of hydration.
  2. C3S - Tricalcium silicate follows with a significant heat of hydration but less than C3A.
  3. C4AF - Tetracalcium aluminoferrite has less heat of hydration than C3S.
  4. C2S - Dicalcium silicate has the least heat of hydration.
Based on this, the correct order in decreasing heat of hydration is:
C3A > C3S > C4AF > C2S
So, the correct option is: C3A > C3S > C4AF > C2S

PERT stands for,
  • a)
    Program Evaluation and Review Technique
  • b)
    Planning Evaluation and Review Technique
  • c)
    Program Event and Review Technique
  • d)
    Planning Evaluation and Research Technique
Correct answer is option 'A'. Can you explain this answer?

Sagnik Sen answered  •  Feb 05, 2025
Understanding PERT
The acronym PERT stands for Program Evaluation and Review Technique. It is a project management tool widely used in various fields, including civil engineering, to plan, schedule, and coordinate tasks effectively.
Key Features of PERT:
  • Focus on Time Management: PERT emphasizes the time required to complete each task, allowing project m... more
  • Network Diagram: It utilizes a graphical representation, showing the sequence of activities and their interdependencies, which helps in visualizing the project flow.
  • Critical Path Method: PERT identifies the longest path through the project, known as the critical path, which determines the minimum project duration.
  • Uncertainty Handling: PERT incorporates probabilistic time estimates for activities, acknowledging that there can be uncertainty in project timelines.

Application in Civil Engineering:
Civil engineering projects often involve numerous tasks that are interrelated. PERT helps engineers:
  • Plan Complex Projects: It facilitates the planning of large-scale projects like bridges, roads, and buildings.
  • Resource Allocation: PERT assists in allocating resources efficiently based on project timelines.
  • Risk Management: By understanding the critical path, engineers can identify potential delays and mitigate risks proactively.

In summary, PERT is a vital methodology in project management, particularly in civil engineering, enabling professionals to assess and enhance project timelines and resource allocation efficiently. Understanding its principles can significantly improve project outcomes.

The corrosion of steel in reinforced concrete structures can be assessed by non-destructive testing using the principle:
  • a)
    Ultrasonic Pulse Velocity Method 
  • b)
    Computer Tomography
  • c)
    Linear polarization resistance technique
  • d)
    Acoustic emission technique
Correct answer is option 'C'. Can you explain this answer?

Sagnik Sen answered  •  Feb 05, 2025
Understanding Corrosion in Reinforced Concrete
Corrosion of steel reinforcement in concrete is a significant concern for structural integrity and longevity. Non-destructive testing (NDT) methods are essential for assessing this corrosion without damaging the structure.
Linear Polarization Resistance Technique
The correct answer, option 'C', refers to the Linear Polariz
... more

Which one of the following is incorrect for the developing region of the pipe flow?
  • a)
    The velocity profile continuously takes a parabolic shape downstream
  • b)
    The velocity near the centre line is greater than free stream velocity
  • c)
    The fluid has convective acceleration
  • d)
    The average velocity in developing region is more than the average velocity in fully developed flow
Correct answer is option 'D'. Can you explain this answer?

Sagnik Sen answered  •  Feb 05, 2025
Understanding the Developing Region of Pipe Flow
In fluid mechanics, the developing region of pipe flow is characterized by changes in the velocity profile as the flow transitions from an entry condition to a fully developed state. Let's analyze why option 'D' is incorrect.
Velocity Profile in Developing Flow
- In the developing region, the velocity profile is not full
... more

How is geodetic survey used in surveying?

Sagnik Sen answered  •  Feb 05, 2025
Introduction to Geodetic Survey
Geodetic surveying is a specialized branch of surveying that deals with the measurement and representation of the Earth's surface, accounting for its curvature and irregularities. It is essential for large-scale projects where precision is crucial.
Key Uses of Geodetic Surveying
- Determining Positions
Geodetic surveys prov
... more
Sagnik Sen upvoted   •  Feb 03, 2025

Consider the following zones:
  1. Saturation zone
  2. Capillary zone
  3. Intermediate zone
  4. Soil water zone
Which of these does not relate to the zone of aeration in the soil profile?
  • a)
    1 and 2
  • b)
    2 and 3
  • c)
    4 only
  • d)
    1 only
Correct answer is option 'D'. Can you explain this answer?

Gate Funda answered
The earth crust according to the existence of water is mainly divided into two zones:
  • Zone of Rock Fracture
  • Zone of Rock Flowage
Zone of Rock Fracture is further divided into two zones:
  • Zone of Aeration 
  • Zone of Saturation
Zone of Aeration is further divided into three zones:
  • Root soil water zone
  • Intermediate zone
  • Capillary water zone

Hence, the saturation zone does not come under the zone of aeration.

Which of the following is not a function of construction management?
  • a)
    Planning the construction activity
  • b)
    Valuation of property
  • c)
    Creation of an organizational set up to execute planned activity
  • d)
    Identifying areas of deficiency and taking remedial steps
Correct answer is option 'B'. Can you explain this answer?

Sagnik Sen answered  •  Jan 11, 2025
Functions of Construction Management
Construction management encompasses a variety of tasks crucial for the successful execution of construction projects. However, not all tasks related to construction fall under its purview.
Key Functions of Construction Management:
- Planning the Construction Activity:
This involves outlining the project timeline, deter
... more

Consider the first order initial value problem
y’ = y + 2x – x2, y(0) = 1, (0 ≤ x < ∞) with exact solution y(x) = x2 + ex. For x = 0.1, the percentage diference between the exact solution and the solution obtained using a single iteration of the second-order Runge Kutta method with step size h = 0.1 is
  • a)
    0.06%
  • b)
    0.07%
  • c)
    0.08%
  • d)
    0.1%
Correct answer is option 'A'. Can you explain this answer?

Sagnik Sen answered  •  Nov 26, 2024
Understanding the Problem
The initial value problem we have is:
- Equation: y' = y + 2x - x^2
- Initial Condition: y(0) = 1
- Exact Solution: y(x) = x^2 + e^x
We need to find the percentage difference between the exact solution and the solution obtained using the second-order Runge Kutta method (RK2) with a step size of h = 0.1 at x = 0.1.
... more

The creep strains are
  • a)
    caused due to dead loads only
  • b)
    caused due to live loads only
  • c)
    caused due to both dead loads and live loads
  • d)
    independent of loads
Correct answer is option 'A'. Can you explain this answer?

Sagnik Sen answered  •  Oct 14, 2024
Understanding Creep Strains
Creep strains are a critical phenomenon in materials, particularly in civil engineering, where they affect the long-term performance of structures.
Definition of Creep Strain
- Creep strain refers to the time-dependent deformation of materials under sustained load.
- It occurs primarily in materials like concrete and metals, particular
... more

While solving numericals related to strain energy theory Poisson ratio is taken into account or not?

Sagnik Sen answered  •  Sep 11, 2024
Understanding Strain Energy Theory
Strain energy theory is essential in mechanical engineering, particularly when analyzing materials under stress. It focuses on the energy stored in a material when it deforms elastically.
Role of Poisson's Ratio
Poisson's ratio (ν) is a critical parameter in this analysis, influencing how materials respond to stress. It is defined as
... more

If A = {x, y, z}, then the number of subsets in powerset of A is
  • a)
    6
  • b)
    8
  • c)
    7
  • d)
    9
Correct answer is option 'B'. Can you explain this answer?

Sagnik Sen answered  •  Jul 23, 2024
Explanation:

Given:
A = {x, y, z}

Finding the Power set:
To find the power set of A, we need to consider all possible subsets of A, including the empty set and A itself.

Number of Elements in Set A:
Since A has 3 elements, the number of subsets in the power set can be calculated using the formula 2^n, where n is the number
... more

The horizontal distance between two consecutive contours is termed as ________.
  • a)
    Contour equivalent
  • b)
    Horizontal interval
  • c)
    Contour interval
  • d)
    Horizontal equivalent
Correct answer is option 'D'. Can you explain this answer?

Sagnik Sen answered  •  Mar 02, 2024

Horizontal Equivalent Explanation

The term used to describe the horizontal distance between two consecutive contours is known as the "Horizontal Equivalent." This value is crucial in the field of surveying and mapping, as it helps determine the topography of a given area.

Importance of Horizontal Equivalent
- The horizontal equivalent is used to calcu
... more
Sagnik Sen asked   •  Jul 21, 2023

Which of the following banks have entered capital market in the wake of Narasimham Committee recommendations?
  • a)
    State Bank of India
  • b)
    Oriental Bank of Commerce
  • c)
    Bank of India
  • d)
    All of the above
  • e)
    None of the above
Correct answer is option 'D'. Can you explain this answer?

The correct answer is option 'D', which states that all of the above banks, namely State Bank of India, Oriental Bank of Commerce, and Bank of India, have entered the capital market in the wake of Narasimham Committee recommendations.

The Narasimham Committee was set up in 1991 by the Government of India to examine and suggest measures for the reform and restructuring of the Indian bank
... more

Sagnik Sen asked   •  May 10, 2023

A micro programmed control unit
  • a)
    Is faster than a hardwired unit
  • b)
    Facilitates easy implementation of a new instruction
  • c)
    Is useful when small programs are to be run
  • d)
    All of the above
Correct answer is option 'B'. Can you explain this answer?

Akshay Nair answered
Introduction:
A micro programmed control unit is a type of control unit used in computer systems to execute instructions. It is responsible for fetching instructions from memory, decoding them, and generating control signals to coordinate the operations of other components in the system. There are two main types of control units: hardwired and micro programmed. In this question, we are
... more

Sagnik Sen asked   •  Feb 22, 2023

Which one of the following is the correct perfect square (in base 10)?
  • a)
    (29)11
  • b)
    (17)7
  • c)
    (23)3
  • d)
    (46)6
Correct answer is option 'C'. Can you explain this answer?

Nakul Chauhan answered
Explanation:
To determine which option is a perfect square, we need to check if the given number can be expressed as the square of an integer.

Let's analyze each option one by one:

a) (29)11
The number 29 is not a perfect square because there is no integer that, when squared, gives 29. Therefore, (29)11 is not a perfect square.

b) (17)7
The nu
... more

Sagnik Sen asked   •  Feb 16, 2023

For a JFET, the following readings were obtained experimentally:
What is the amplification factor (α) of the JFET?
(Answer up to the nearest integer)
    Correct answer is '96'. Can you explain this answer?

    Ravi Singh answered
    Α = rd x gm
    rd = ΔVds/ΔID
    With VGS = 0 V constant, VDS increases from 7 V to 15 V, ID changes from 10 mA to 10.25 mA.
    ΔVds = 8 V
    ΔID = 0.25 mA
    rd = 8/0.25 m = 32 kΩ
    α = 32 x 103 x 3 x 10–3 = 96

    Sagnik Sen asked   •  Feb 08, 2023

    In the circuit shown in figure, the switch is closed at time t = 0 , while the capacitor is initially charged to – 5V [i.e. VC (0) = -5V ]
    The time after which the voltage across the capacitor becomes zero is (Round off to 3 decimal places) ______ ms.
    Correct answer is '0.1386'. Can you explain this answer?

    Given, initial value of voltage across capacitor
    VC (0− ) =− 5 V
    When switch is closed and circuit is in steady state (i.e. t =∞, and capacitor becomes open circuit) So circuit becomes as,
    Apply KCL at node VC (∞) is,
    Vc(∞) 5\3 V → Steady state voltage of capacitor 3
    Now, for calculating time constant ( τ ), first we calculate Rth as shown below,
    Apply KCL at node N,
    Thus, time constant, て=Rth ×C
    Apply transient equation for voltage across capacitor is,
    If VC(t)=0, then equations (i) becomes as,
    Hence, the correct answer of t is 0.1386 msec.
    Queston_Type: 4

    Sagnik Sen asked   •  Feb 02, 2023

    The root-loci for α > 0 with K = 10 is
    • a)
    • b)
    • c)
    • d)
    Correct answer is option 'C'. Can you explain this answer?

    Ravi Singh answered
    1. Is not a valid root - loci because all root - loci ends on a zero. (B) is also not a valid root loci because loci exist to the left of even number of pole.
    Characteristic equation is
    s3 + 10s2 + (29 + 10α)s + 30α = 0
    For α ≤ 0 root - loci does not intersect the imaginary axis.

    Sagnik Sen asked   •  Jan 18, 2023

    vector field is given by E = 4zy2ux + 2y sin 2xuy + y2 sin 2xuz. The surface on which Ey = 0 is
    • a)
      Plane y = 0
    • b)
      Plane x = 0
    • c)
      Plane x = 3π / 2
    • d)
      All of these
    Correct answer is option 'D'. Can you explain this answer?

    Bhavya Singh answered
    Given:
    The vector field is given by E = 4zy^2ux + 2y sin(2x)uy + y^2 sin(2x)uz.

    To Find:
    The surface on which Ey = 0.

    Solution:
    The vector field is given by E = 4zy^2ux + 2y sin(2x)uy + y^2 sin(2x)uz.

    Let's determine the value of Ey.

    Calculating Ey:
    The y-component of the vector field is Ey = 2y sin(2x).... more

    Sagnik Sen asked   •  Jan 11, 2023

    A specimen of a Si has a resistivity of 200kΩ -cm, magnetic flux B = 0.3Wb / m2 and d = w = 6mm. if the value of hall voltages and hall currents are 60mV and 10μA. Then the value of μp is (cm2 / V - sec )
      Correct answer is '1800'. Can you explain this answer?

      Omkar Rao answered
      Understanding Hall Effect Parameters
      To determine the hole mobility (μp) in a semiconductor, we can use the Hall effect equations, which relate the Hall voltage, current, magnetic field, and mobility.
      Given Parameters:
      - Resistivity (ρ) = 200 kΩ-cm = 200 x 10^3 Ω-cm
      - Magnetic flux density (B) = 0.3 Wb/m²
      - Thickness (d) = Width (w) = 6 mm = 0.6 cm
      -
      ... more

      Fetching relevant content for you