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Archive - July 2021

One dimensional flow
  • Electrical

One, Two and Three Dimension Flow

July 21, 2021
by Santhakumar Raja
2 min read
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One dimensional flow is the type of flow in which the flow characteristics such as velocity, pressure, density, temperature etc. are the function of time and one space co-ordinate only. Mathematically, u=f(x) ; v=0 ; w=0…...

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Bellows pressure gauge
  • Education
  • Electrical
  • Mechanical

Pressure Measurement by Pressure Gauges

July 20, 2021
by Santhakumar Raja
4 min read
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Most of the conventional pressure gauges are of a mechanical type. These gauges embody on elastic element which deflects under the action of the applied pressure. This movement mechanically magnified and read with the help of...

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Classification of Manometers
  • Electrical
  • Mechanical

Pressure Measurement By Manometers

July 18, 2021
by Santhakumar Raja
3 min read
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Manometers is the device which is used for measuring the pressure at a point in a fluid by balancing the column of fluid by the same or another column of liquid. Simple Manometers Simple manometers are used to measure the...

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Surface tension
  • Electrical

Surface Tension | Definition and Examples

July 17, 2021
by Santhakumar Raja
3 min read
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The surface tension is due to cohesion between particles at the free surface. Due to molecular attraction, liquids have properties of cohesion and adhesion. Cohesion is due to the force of attraction between molecules of same...

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The relationship between shear stress and shear strain
  • Education

Basic Concepts of Fluid Mechanics and Flow of Fluids

July 15, 2021
by Santhakumar Raja
5 min read
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Fluid may be defined as a substance which is capable of flowing. It has no definite shape of its own but it confirms the shape of the containing vessel. A small amount of shear force exerted on a fluid will cause it to undergo a...

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Refrigerator
  • Electrical

Basic Thermodynamics of Refrigerators and Heat Pumps

July 15, 2021
by Santhakumar Raja
2 min read
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The ideal body having large thermal energy capacity which either continuously supplies or absorbs the infinite amount of heat without changing its temperature is called thermal energy reservoir or heat reservoir. If the reservoir...

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Kelvin planck statement
  • Electrical

Statements of Second Law of Thermodynamics

July 14, 2021
by Santhakumar Raja
3 min read
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The second law of thermodynamics is stated in two ways. Kelvin Planck statement and Clausius statement. Kelvin Planck Statement The Kelvin Planck statement can be expressed as “It is impossible for any device that...

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Steady Flow Energy Equation (SFEE)
  • Education
  • Electrical

Steady Flow Energy Equation (SFEE)

July 13, 2021
by Santhakumar Raja
3 min read
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Consider an open system through in which the working substance flows as a steady rate as shown in figure. The working substance entering the system at (1) and leaving the system at (2). Let, p1 be the pressure of the working...

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  • Electrical

First Law of Thermodynamics – Applications to Open Systems

July 13, 2021
by Santhakumar Raja
3 min read
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In any systems, the rate of flow of working fluid is constant with respect to time, then the system is known as steady flow system. In this system, the mass of working fluid enters the system and leaves the system after doing the...

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Thermodynamics - Paddle wheel mechanism
  • Electrical

Second Law of Thermodynamics – theteche.com

July 13, 2021
by Santhakumar Raja
3 min read
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According to the first law of thermodynamics, all forms of energy are equivalent. One form of energy can be converted into other form and any process is possible as long as it does not create energy or destroy energy. Also, in a...

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