The total stress is the sum of the weight of the soil up to the surface and the weight of water above this: Vertical total stress at depth z, **s _{v} = g .**

2. When the maximum vertical stress is 0.111 kN/m^{2} at a radial distance of 4m from the point load is __________ kN. Q=**20 kN**.

Newmark's Influence Chart is an illustration used **to determine the vertical pressure at any point below a uniformly loaded flexible area of soil of any shape**. This method, like others, was derived by integration of Boussinesq's equation for a point load.

It is **the parameter used to find the consolidation coefficient with time taken for consolidation settlement in soil**. It is a non-dimensional number.

The standard method for measuring pore water pressure below the water table **employs a piezometer, which measures the height to which a column of the liquid rises against gravity**; i.e., the static pressure (or piezometric head) of groundwater at a specific depth.

When the ratio of r/z equals to 1, the Boussinesq influence factor is ________ of the maximum. ∴ the Boussinesq influence factor is 0.0844/0.4775*100=**17.7% of the maximum**.

42.34 kN

Which of the following formula is used in Falling head permeability test? **q = K i A**. Explanation: The head h1 and h2 at any time instant t is equal to the difference in the water level in the stand pipe and the bottom tank.

Active and passive earth pressure

Rankine's theory states in general terms that the active earth pressure coefficient is: The active earth pressure at a depth h (m) due to a level fill of soil is therefore: **The passive earth pressure (E _{p}), which equals K_{p}× h where K_{p} = the coefficient of passive earth pressure**.

**Contact pressure = Load on wheel/Contact area**. **Tyre pressure = Pressure inside the tyre**.

The total stress is the sum of the weight of the soil up to the surface and the weight of water above this: Vertical total stress at depth z, **s _{v} = g .**

Contact pressure is **the actual pressure transmitted from the foundation to the soil**.

The contact pressure is **the ratio of the normal load to the true contact area**, which is the sum of the front and rear areas. It may be called the scratch hardness only in the case of plastic contact.

On any given processor, the total waiting time for an ordered set of processes taking time P_{1}.. P_{N} to complete is the total of individual elapsed times multiplied by the number of waiting processes remaining: **(N - 1)P _{1} + (N - 2)P_{2} + **

Calculate Productivity**By dividing the number of products produced by the man-hours involved, you calculate the average production rate**. As an example, if your employees produced 800 units in the 200 total man-hours during the week, divide 800 by 200 to calculate 4 units per man-hour.

**Strain Energy Formula**

- δ = compression,
- When stress σ is proportional to strain ϵ, the strain energy formula is given by,
- σ = stress.
- U = σ
^{2}/ 2E × V. - σ = stress,
- U = Fδ / 2.
- = 1000 ×1.2×10
^{−}^{3}/ 2. - A rod of area 90 mm
^{2}has a length of 3 m. Determine the strain energy if the stress of 300 MPa is applied when stretched.

**How to calculate total strain energy**

- Calculation.
- Determine the prior size of the object's length before force was applied.
- Determine the area of the side of the object.
- Determine the force applied to the object if not already known.
- Square the value of the force.
- Divide the value found in Step 4 by 2.

(1) **Convergent nozzle**: When the cross-section of a nozzle decreases continuously from the entrance to exit, it is called a convergent nozzle. (2) Divergent nozzle: When the cross-section of a nozzle increases continuously from the entrance to exit, it is called a divergent nozzle.

- 649 m/s.
- 749 m/s.
- 849 m/s.
- 949 m/s.

A de Laval nozzle (or convergent-divergent nozzle, CD nozzle or con-di nozzle) is **a tube which is pinched in the middle, making a carefully balanced, asymmetric hourglass shape**.

Explanation: **Laminar jet nozzle** is used to convert the fluid in laminar flow. Explanation: Nozzles used in blast furnaces are called tuyeres. Become Top Ranker in Steam and Gas Turbines Now! Explanation: If M<1 then it is subsonic flow.

Dated : 13-Jun-2022

Category : Education