Open Club  ·  103 members

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Engineering Subjects

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1. What's new in this club
2. ## What is a manometer?

Manometer is 'U' tube pipe which is used for measuring the pressure difference between two points. The difference is denoted by 'h' . From this h value flow flowing through pipe is measured. By the formula Q=a1a2√2gh ---------------- √a1²-a2²
3. ## How does viscosity of a fluid vary with temperature ?

In the word fluid there are two things one is liquid and second is gas. So if temperature is increase for liquid then viscosity is decreased and for gas it will be increased because fast movement of elements.
4. ## How does viscosity of a fluid vary with temperature ?

viscosity decreases as temperature of a fluid increases. As temperature rises, the kinetic energy of the molecules increases. The molecules become more energetic to move freely and are loosely bonded to each other. The reverse is true for when temperature drops.
5. ## What is a manometer?

Manometer used to measure the static pressure and based on the hydrostatic pressure variation equation, p=ρgh
6. ## Define compressibility.

The compressibility of fluids is confined to their behavior in the mode of compression. The definition of the bulk modulus of elasticity stems from the relative change in volume and provides a measure of the compressibility of a fluid.
7. ## Why does the viscosity of a gas increases with the increase in temperature while that of a liquid decreases with increase in temperature ?

In liquids, viscosity depends on the strength of cohesive forces between fluid molecules; hence an increase in temperature results in a decrease cohesive forces and a decrease in viscosity. For gases, viscosity depends on the momentum exchange between layers of gas moving at different velocities. An increase in temperature provides an increase in molecular activity and an increase in viscosity.
8. ## Define Newtonian and Non-Newtonian fluids.

Hi Everyone, Not my strongest topic but I do know the answer to this one. A Newtonian fluid's viscosity remains constant, no matter the amount of shear applied for a constant temperature. These fluids have a linear relationship between viscosity and shear stress. Non-Newtonian fluids are the opposite of Newtonian fluids. When shear is applied to non-Newtonian fluids, the viscosity of the fluid changes. This can be either Dilatant - viscosity is directly proportional, Psuedoplastic - viscosity is Inversely proportional, Rheopectic - viscosity is directly proportional over time or thixotropic - viscosity is inversely proportional over time. Why do you need to know the difference? It's important to fully understand the properties of the fluids you're transferring, mixing, or pumping, because viscosity plays a major role in sizing and selecting equipment. Understanding how it reacts to shear will help you properly size and select all the equipment it comes in contact with. I am a very busy person, so apologies in advance if it takes a few days to get back to anyone. Great topic OP. Very important knowledge to have.
9. ## How does viscosity of a fluid vary with temperature ?

(a) How does viscosity of a fluid vary with temperature ? (b) Cite examples where surface tension effects play a prominent role. You can write the answer and upload releva﻿nt images to justif﻿y the answer (if required) Let's together discuss and contribute in making the best answ﻿﻿﻿﻿﻿﻿e﻿﻿﻿﻿﻿﻿﻿﻿﻿﻿﻿r
10. ## Why does the viscosity of a gas increases with the increase in temperature while that of a liquid decreases with increase in temperature ?

Why does the viscosity of a gas increases with the increase in temperature while that of a liquid decreases with increase in temperature ? You can write the answer and upload releva﻿nt images to justif﻿y the answer (if required) Let's together discuss and contribute in making the best answ﻿﻿﻿﻿﻿﻿e﻿﻿﻿﻿﻿﻿﻿﻿﻿﻿﻿r
11. ## Distinguish between ideal fluids and real fluids. Explain the importance of compressibility in fluid flow.

(a) Distinguish between ideal fluids and real fluids. Explain the importance of compressibility in fluid flow. (b) Define the terms: density, specific volume, specific gravity, vacuum pressure, compressible and incompressible fluids. You can write the answer and upload releva﻿nt images to justif﻿y the answer (if required) Let's together discuss and contribute in making the best answ﻿﻿﻿﻿﻿﻿e﻿﻿﻿﻿﻿﻿﻿﻿﻿﻿﻿r
12. ## Define compressibility.

Define compressibility. You can write the answer and upload releva﻿nt images to justif﻿y the answer (if required) Let's together discuss and contribute in making the best answ﻿﻿﻿﻿﻿﻿e﻿﻿﻿﻿﻿﻿﻿﻿﻿﻿﻿r
13. ## What do you understand by terms

What do you understand by terms: (i) Isothermal process, (ii) Adiabatic process, and (ii) Universal-gas constant You can write the answer and upload releva﻿nt images to justif﻿y the answer (if required) Let's together discuss and contribute in making the best answ﻿﻿﻿﻿﻿﻿e﻿﻿﻿﻿﻿﻿﻿﻿﻿﻿﻿r
14. ## Define Newtonian and Non-Newtonian fluids.

Define Newtonian and Non-Newtonian fluids. You can write the answer and upload releva﻿nt images to justif﻿y the answer (if required) Let's together discuss and contribute in making the best answ﻿﻿﻿﻿﻿﻿e﻿﻿﻿﻿﻿﻿﻿﻿﻿﻿﻿r
15. ## Enunciate Newton's law of viscosity.

Enunciate Newton's law of viscosity. Explain the importance of viscosity in fluid motion. What is the effect of temperature on viscosity of water and that of air? You can write the answer and upload releva﻿nt images to justif﻿y the answer (if required) Let's together discuss and contribute in making the best answ﻿﻿﻿﻿﻿﻿e﻿﻿﻿﻿﻿﻿﻿﻿﻿﻿﻿r
16. ## State the Newton's law of viscosity and give examples of its application.

State the Newton's law of viscosity and give examples of its application. You can write the answer and upload releva﻿nt images to justif﻿y the answer (if required) Let's together discuss and contribute in making the best answ﻿﻿﻿﻿﻿﻿e﻿﻿﻿﻿﻿﻿﻿﻿﻿﻿﻿r
17. ## Explain the terms:

Explain the terms: (i) Dynamic viscosity, and (ii) Kinematic viscosity. Give their dimensions, You can write the answer and upload releva﻿nt images to justif﻿y the answer (if required) Let's together discuss and contribute in making the best answ﻿﻿﻿﻿﻿﻿e﻿﻿﻿﻿﻿﻿﻿﻿﻿﻿﻿r
18. ## What is the difference between dynamic viscosity and kinematic viscosity ?

What is the difference between dynamic viscosity and kinematic viscosity ? State their units of measurements. You can write the answer and upload releva﻿nt images to justif﻿y the answer (if required) Let's together discuss and contribute in making the best answ﻿﻿﻿﻿﻿﻿e﻿﻿﻿﻿﻿﻿﻿﻿﻿﻿﻿r
19. ## Differentiate between

Differentiate between : Liquids and gases, (i) Real fluids and ideal fluids, (ii) Specific weight and specific volume of a fluid You can write the answer and upload releva﻿nt images to justif﻿y the answer (if required) Let's together discuss and contribute in making the best answ﻿﻿﻿﻿﻿﻿e﻿﻿﻿﻿﻿﻿﻿﻿﻿﻿﻿r
20. ## Define the following fluid properties:

Define the following fluid properties: Density, weight density, specific volume and specific gravity of a fluid. You can write the answer and upload releva﻿nt images to justif﻿y the answer (if required) Let's together discuss and contribute in making the best answ﻿﻿﻿﻿﻿﻿e﻿﻿﻿﻿﻿﻿﻿﻿﻿﻿﻿r
21. ## Explain briefly the working principle of Bourdon Pressure Gauge with a neat sketch.

Explain briefly the working principle of Bourdon Pressure Gauge with a neat sketch. You can write the answer and upload releva﻿nt images to justif﻿y the answer (if required) Let's together discuss and contribute in making the best answ﻿﻿﻿﻿﻿﻿e﻿﻿﻿﻿﻿﻿﻿﻿﻿﻿﻿r
22. ## What is hydrostatic pressure distribution?

What is hydrostatic pressure distribution? Give one example where pressure distribution is non-hydrostatic You can write the answer and upload releva﻿nt images to justif﻿y the answer (if required) Let's together discuss and contribute in making the best answ﻿﻿﻿﻿﻿﻿e﻿﻿﻿﻿﻿﻿﻿﻿﻿﻿﻿r
23. ## Distinguish between manometers and mechanical gauges.

Distinguish between manometers and mechanical gauges. What are the different types of mechanical pressure gauges? You can write the answer and upload releva﻿nt images to justif﻿y the answer (if required) Let's together discuss and contribute in making the best answ﻿﻿﻿﻿﻿﻿e﻿﻿﻿﻿﻿﻿﻿﻿﻿﻿﻿r
24. ## What is the difference between U-tube differential manometers and inverted U-tube differential manometers?

What is the difference between U-tube differential manometers and inverted U-tube differential manometers? Where are they used ? You can write the answer and upload releva﻿nt images to justif﻿y the answer (if required) Let's together discuss and contribute in making the best answ﻿﻿﻿﻿﻿﻿e﻿﻿﻿﻿﻿﻿﻿﻿﻿﻿﻿r
25. ## What do you mean by single column manometers?

What do you mean by single column manometers? How are they used for the measurement of pressure ? You can write the answer and upload releva﻿nt images to justif﻿y the answer (if required) Let's together discuss and contribute in making the best answ﻿﻿﻿﻿﻿﻿e﻿﻿﻿﻿﻿﻿﻿﻿﻿﻿﻿r
26. ## What is a manometer?

What is a manometer? How are they classified ? You can write the answer and upload releva﻿nt images to justif﻿y the answer (if required) Let's together discuss and contribute in making the best answ﻿﻿﻿﻿﻿﻿e﻿﻿﻿﻿﻿﻿﻿﻿﻿﻿﻿r
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