Ramani Aswath
@ramani-VR4O43 Member
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Replied #Discussions
How many cubes are on the trailer?
The only solution that is consistent with the three drawings seems to be one cube located at centre left in the top view. The red square...
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In a room of 100 people, 99% are left-handed. How many people need to leave to bring it down to 98%?
50 lefties have to leave. The lone right hander should not leave. That leaves 1 RH and 49 LH. That gives (49 LH/ 50 total)x 100...
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Answer: You have been given an elephant ... What would you do with the elephant?
The elephant is a vegetarian. No significant carbon emissions. 3D print a properly designed Howdah for a mobile office. Power pack can hang between the legs.
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question for Radiation techs
Dark glasses attenuate visual radiation, ear muffs attenuate acoustic radiation. Likewise various shields can attenuate various radiations. Depends on the type and wavelength.
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Whats Ohms law equivalent in magnetic fields?
I am unaware of an equivalent law. Maybe Ampere's law relating Magneto motive force to the number of turns in a coil and the current can...
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Orient Cloud 3 Fan with CloudChill Technology : Better than AC/Cooler?
Most experts agree that air for breathing should be between RH 40 to 70%. Higher humidities can lead to problems , especially for asthmatics. Even for...
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Two questions about heat exchanger
I feel that 200,000 is pretty high. In any case friction factor for 10,000 to 100,000 does not vary much. The drawing shows individual fins and...
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Orient Cloud 3 Fan with CloudChill Technology : Better than AC/Cooler?
There is no technical difference between this and the desert cooler. Both work on the same principle water removes 0.56 kcal of heat for every gram...
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torque multiplication
<a href="https://www.societyofrobots.com/mechanics_gears.shtml" target="_blank" rel="nofollow noopener noreferrer">How to Build a Robot Tutorials - Society of Robots</a> #-Link-Sni...
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What do biomedical engineers do on a daily basis?
In the hospital context, they maintain all healthcare systems, equipment, gas supply systems and such. They do not take part in actual clinical procedures. They work...
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Chris Guillebeau and The $100 Startup are in Bangalore 7PM 3/12/2012
Durga, ET, really missed meeting up. Why not you two write up a more detailed piece for us all for the news category. You may trigger...
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Can an engineer become a doctor?
I had a classmate in Chemical Engineering at Andhra University back in the late 1950s. He passed out , went to USA and became a good...
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nyone interested in The future world of engineering - skills
A recording of the session: Panel session recording: The future world of engineering skills and careers https://www.theengineer.co.uk/content/videos/panel-session-recording-explori...
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What should we work on next?
If the discussions are ongoing, it may be helpful for such to be upfront.
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Chemical that keeps mineral water chilled for long time
Why don’t CEans do some very basic thermal calculations? They will then know that this is theoretically impossible.
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Pune or Indore - Best city to study engineering?
What’s wrong with Pune? You will know on CE that the best place for engineering is inside your own head.If you have a hankering for it,...
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Boolean algebra. Need help please
#-Link-Snipped-#<a href="https://www.google.co.in/search?q=nptel+boolean+algebra&ie=UTF-8&oe=UTF-8&hl=en-in&client=safari" target="_blank" rel="nofollow noopener noreferrer">nptel...
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Are you prepared for the new Groups + Discussions merger?
Suppose a post put up in general category also has a special group relevance (happens often) can the poster have an option to classify it under...
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What should come in the place of question mark? Can you find the pattern?
B 14, I think.Subtract 1 from each peripheral number and multiply all.(4-1)x(3-1)x(5-1) = 3x2x4 = 24(3-1)x(7-1)x(2-1) = 2x6x1 = 12So, (8-1)x(3-1)x(2-1) = 7x2x1 = 14
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What are the best open innovation platforms/communities for engineers?
Two (best or not) are:Engineers Without Bordershttp://ewb-international.com/Engineering World Healthhttps://www.ewh.org/
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How do I calculate the future cooling demand
Since it is a green house, solar radiation will be the maximum load, added to this will be the 1700.05 kW from lighting. The peak worst...
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How do I calculate the future cooling demand
Just what I suspected. Then the roof is probably glass, maybe tinted, which will reduce the transmitted solar wattage. Greenhouses are used when the outside ambient...
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How do I calculate the future cooling demand
What is this total area of 7700 m^2? Floor area? Area of walls plus floor plus roof.It is impossible to get any meaningful figure unless one...
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Will a load below the fatigue limit cause breakage on a piece of immobile iron?
At ambient temperatures and stress levels well below the yield stress there should be no relaxation in a truly elastic material.In some old churches in Europe...
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How do I calculate the future cooling demand
Thee are too many loose ends in the description. If the total area is 7700 m^2, it cannot all be in one plane. The biggest heat...
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What is mean by MIG in electrode
I am guessing. MIG may refer to Metal Inert Gas welding. Consumable electrodes are used for this.#-Link-Snipped-#
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Stress relaxation limit for steel
Stress relaxation is more applicable to viscounts-elastic material like glass, polymers and composites.Steel, within the elastic limits at ambient temperatures, is quite unlikely t...
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Will a load below the fatigue limit cause breakage on a piece of immobile iron?
Consider this. The bottom portion of the column has been under more than 5 tonnes compressive load since 402 AD. However, it is only 5 kg/sqcm,...
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Will a load below the fatigue limit cause breakage on a piece of immobile iron?
Creep happens at a higher temperature. Nothing much happens at ambient temperatures.Here is a description of the famous iron pillar at Delhi built in 402 AD,...
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Will a load below the fatigue limit cause breakage on a piece of immobile iron?
Creep is another process that can cause problems in certain metals even when they are stressed well below their yield strength. In the case of iron...
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Will a load below the fatigue limit cause breakage on a piece of immobile iron?
Not likely. However, stress corrosion cracking is possible in such cases.#-Link-Snipped-#<a href="https://en.wikipedia.org/wiki/Stress_corrosion_cracking" target="_blank" rel="nofo...
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How to remove water from liquid digestate?
My apologies. Sea water has nearly 3.5% salt not 1%, almost the same solid content as the residue you are looking at.
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Internship at BHEL for second year biomedical engineering student
Where are you doing your biomedical engineering studies?Aravind eye hospital in Puducherry does some amount of biomedical research related to sight. Have you checked out if...
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How to remove water from liquid digestate?
In my opinion the solar open pond evaporation process used for salt from sea water ( solid content about 1%) can be applied to this. It...
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Why does a motor take 1 ampere when current passes through auxiliary contacts, whereas it takes 10 ampere?
In a single phase motor, W= VxIx cos(phi).Full load current of a 1 hp induction motor will be about 8 amps taking into account power factor.You...
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Why does a motor take 1 ampere when current passes through auxiliary contacts, whereas it takes 10 ampere?
The question is not clear. A sketch of the circuit may help.
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How to create awesome PPT for seminar
#-Link-Snipped-# has given (without a PPT!) all that needs to be done.If the audience are peers, you can be technical all the way. If it is...
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Uses of slew rate or rise time.
<a href="https://ieeexplore.ieee.org/abstract/document/1084518" target="_blank" rel="nofollow noopener noreferrer">A model for slew-induced distortion in single-amplifier active fi...
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How to convert cable thermal losses [Watts] into enthalpy?
1 kwhr = 860 kcals 15 watts adds 13 kcals of heat in an hour. That much extra has to be removed by the cooling system.
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Im asking of ideas to add to my project also how to calculate how much solar panels generate?
A solar tree is a large scale solar power generator. Why do you need that for charging phones? Solar trackers themselves need power and are complicated...
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The jet propulsion with closed combustion type
The crucial issue may have to do with the door mechanism.How do the doors open and close? What is the fatigue life for such a mechanism?
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Why zener diode conducts currents in reverse but why not semiconductor diode?
<a href="https://nptel.ac.in/courses/122106025/9#" target="_blank" rel="nofollow noopener noreferrer">NPTEL IITm</a>
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Graduation research project about using FRP for strengthening tubes
This is not about tubes. However, it does cover Civil engineering applications:#-Link-Snipped-#
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Graduation research project about using FRP for strengthening tubes
<a href="https://scholar.google.co.in/scholar?hl=en&as_sdt=0%2C5&q=thin+walled+composite+tubes&btnG=" target="_blank" rel="nofollow noopener noreferrer">Google Scholar</a>
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Graduation research project about using FRP for strengthening tubes
This is a materials science project. FRP tubes are mature products. Any number of them are freely available in the market. What is the specific research...
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Discussion about Thermoelectric
Seebeck effect is what you observe with a thermocouple. When there is a temperature difference between two junctions of dissimilar metals a voltage difference arises between...
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Discussion about Thermoelectric
Details missing. Unable to make out what is required.
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Need help building UI for partially/blind people
Many will be colour blind as well. This may have to be figured in. Will all be able to read English?If the sight is really poor...
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Displacement settlements. Surface Water Management
<a href="https://www.google.com/search?q=Disaster+management+in+India&client=firefox-b-d&tbm=isch&source=iu&ictx=1&fir=TXcMhzkLLX9UhM%252CxeVy7KfkuFqptM%252C_&vet=1&usg=AI4_-kThyEW...
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Displacement settlements. Surface Water Management
In most of India disaster management is a disaster in itself. Usually there is shortage of water even for essentials unless the emergency is due to...
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What is the future of aluminium manufacturing in India?
As of now there is no disruptive technology to produce Al economically other than the present fused salt electrolysis. The bauxite has to be purified as...
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What is the future of aluminium manufacturing in India?
Government subsidies still continue in China.The group I work for is a very large consumer of aluminium. Aluminium economics is a major daily issue.There is also...
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What is the future of aluminium manufacturing in India?
It is the government subsidies that causes the discrepancy.#-Link-Snipped-#
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What is the future of aluminium manufacturing in India?
The real raw material for aluminium is not bauxite, which we have in plenty, but electric power, which is an issue. About 40% of the cost...
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Difference between career graph of core jobs vs IT jobs - Can anyone share a long term view?
I use Tony Buzan's mind mapping a lot. Found this in his book: 'The Mind Map Book'.Gives an idea of one person's concept of an ideal...
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Difference between career graph of core jobs vs IT jobs - Can anyone share a long term view?
There is a Tamil saying: “போதுமென்ற மனமே பொன் செய்யும் மருந்து“meaning: A contented mind is a gold spinner.As they say, in the end we are all dead.In...
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Help or advice on how to manufacture this product?
If the spirals are nesting, that is, when looked from the top one sees all the spirals one within the other, you can injection mold in...
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What career choice should I make?
#-Link-Snipped-# ,please see this trail:#-Link-Snipped-#
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What career choice should I make?
In the face of adversity, are you a Guernsey or a Brahman?#-Link-Snipped-#Â
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Is it possible to give insurance to all electronic appliances?
<a href="https://reference.wolfram.com/language/guide/ActuarialComputation.html" target="_blank" rel="nofollow noopener noreferrer">Actuarial Computation—Wolfram Language Documenta...
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Can you give me a examples of graduation project in GIS ?
<a href="https://scholar.google.co.in/scholar?hl=en&as_sdt=0%2C5&q=g+i+s+grad+level+project&btnG=" target="_blank" rel="nofollow noopener noreferrer">Google Scholar</a>
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I've never used this before any suggestions?
Though nominally an engineering forum, CE is a no holds barred place. No subject is taboo. Philosophy, cosmology, quantum physics, chemistry, biology and even sociology have...
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Electro static pracipitator required power calculation?
<a href="https://www.google.co.in/search?q=t-r+set+for+electrostatic+precipitator&ie=UTF-8&oe=UTF-8&hl=en-in&client=safari" target="_blank" rel="nofollow noopener noreferrer">t-r s...
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Electro static pracipitator required power calculation?
Such detailed engineering is beyond the scope of this site. Someone may perhaps be able to help.
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Sir, please suggest me a topic for last year engineering project civil engineering ?
Temporary Relief architecture with built-in solar power for providing immediate temporary relief in disaster hit areas can be a useful project.Some ideas from here:#-Link-Snipped-#...
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What do you think about Netflix's Mobile-Only Rs. 250/month Plan?
Both my son and daughter have subscriptions for both Amazonprime and Netflix. Valid for viewing in five parallel viewing worldwide. Already configured on two iPads.We never...
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What is the difference between efficiency and gain?
I apologise for an arithmetic error in my first post. 5 Kcal/min added to 5 litres of water will increase the temperature by 5/5=10C/min and not...
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What is the difference between efficiency and gain?
Take the water example 10 KCal/ Min was put in. What was the output? Not the 5 Kcal lost by radiation and evaporation but the %...
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What is the difference between efficiency and gain?
Input -> System -> OutputOutput/Input x 100 = %Efficiency1 kg diesel put into an engine say gives an output of 4.6 KWHr. ! kg diesel gives...
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I need to solve the errors in my pan card: help me
Have you tried here?#-Link-Snipped-#
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Fresher student how to meet job
<a href="https://www.google.co.in/search?q=civil+engineering+jobs+for+freshers+India&ie=UTF-8&oe=UTF-8&hl=en-in&client=safari" target="_blank" rel="nofollow noopener noreferrer">ci...
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Can a gyroscope change its rotating direction?
<a href="https://www.youtube.com/watch?v=ejuoMvLugY4" target="_blank" rel="nofollow noopener noreferrer">Stroboscopic effect due to tubelight (when half propellor is white) - YouTu...
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Can a gyroscope change its rotating direction?
#-Link-Snipped-# , while you are right the thing happened when he was seeing with his eyes. That can happen at speeds which are near multiples of...
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Can a gyroscope change its rotating direction?
No. A free spinning Gyro cannot change its direction of rotation on its own during a run. One can start a gyro in either direction. One...
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how to design a sluice valve for 10 inch diameter pipe using Indian standrad 14846:2000?
Do you mean a gate valve? Generally sluice valves are used in an open system and gate valves in a pipe. Both use a wedge to...
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How to determine Yield Strength from ultimate tensile strength of a material?
<a href="https://www.google.co.in/search?q=nptel+yield+strength&ie=UTF-8&oe=UTF-8&hl=en-in&client=safari" target="_blank" rel="nofollow noopener noreferrer">nptel yield strength -...
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Why don't we put televisions on the ceiling?
#-Link-Snipped-# , there’s a much simpler solution doing the same thing that you want.#-Link-Snipped-#
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Can we jam the radio signals by some blocks of code?
Blocking cell phones may be possible by generating a matching noise signal that drowns the data signal. It is the general AM FM radio stations that...
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Can we jam the radio signals by some blocks of code?
Can you jam sunlight or moonlight by coding?An umbrella is needed. Likewise you need a radiation shield, like a Faraday cage for example.
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Case study on piezoelectric harvesting mat
You have to contact them through instructables only.<a href="https://www.instructables.com/member/rjc287/" target="_blank" rel="nofollow noopener noreferrer">Rjc287's Activity - In...
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Electro static pracipitator required power calculation?
I had designed an ESP system for precipitating talcum powder dust from an equipment that was used to apply this powder on rubber gloves. Since the...
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Naoh Scrubbing system required amount of naoh
#-Link-Snipped-# , I am writing from just the chemistry point of view. I have not done anything on flue gas scrubbing.We id have a small incinerator...
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Naoh Scrubbing system required amount of naoh
Not really. You can do it with water alone as mentioned earlier. But if a pH of 12 is specified, then you need that much NaOH...
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What type of lightweight aggregate will give great result in concrete.
<a href="https://scholar.google.co.in/scholar?hl=en&as_sdt=0%2C5&q=lightweight+aggregates+suitable+for+concrete&btnG=" target="_blank" rel="nofollow noopener noreferrer">Google Sch...
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Naoh Scrubbing system required amount of naoh
The problem is that NaOH reacts with SOx and gets consumed. This will drop the pH. You have to add more NaOH to bring it back...
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What Engineering Discipline reguarly uses Numerical Linear Algebra, Numerical Analysis, Numerical Optimization, Partial Differential Equations and Information Theory?
I too wanted to tell you about AI for all autonomous vehicles. Please check out some of the posts in the robotics group here on CE....
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Naoh Scrubbing system required amount of naoh
If your requirement is only pH maintenance 4.8 kg NaOH in 12 m3 water will give a pH of 12 as you mentioned before.But the chemical...
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crop harvesting machine (mini combine harvester)
This is not exactly what you wanted #-Link-Snipped-# , but may give some clues:#-Link-Snipped-#
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Naoh Scrubbing system required amount of naoh
Actually you will need more than that amount. 75 kg/hr is the theoretical amount of Naoh needed to absorb the amount of SOx that is present...
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what are the reasons of thermal battery failure ?
#-Link-Snipped-# , every domestic solar water heater is a thermal battery and it works. What is this operating time that is raised here? Rocks have been...
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crop harvesting machine (mini combine harvester)
Considering the number of operations involved, it is unlikely that a workable machine that can be pulled by a couple of oxen can be developed. In...
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What Engineering Discipline reguarly uses Numerical Linear Algebra, Numerical Analysis, Numerical Optimization, Partial Differential Equations and Information Theory?
Can you look at another option. Many US universities offer combined masters and PhD programs. Maybe a masters in maths and a Phd in mathematics applied...
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What Engineering Discipline reguarly uses Numerical Linear Algebra, Numerical Analysis, Numerical Optimization, Partial Differential Equations and Information Theory?
#-Link-Snipped-# , if you are posing your question to me, I need a while to reply. If  Any other member has any opinion, I am...
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What Engineering Discipline reguarly uses Numerical Linear Algebra, Numerical Analysis, Numerical Optimization, Partial Differential Equations and Information Theory?
Most engineers manage to get by with school arithmetic. Having said that, almost all branches of engineering (except metallurgy perhaps) use advanced mathematics for serious work....
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How much monthly salary does one need to travel in private jets in India on a regular basis?
#-Link-Snipped-# , maybe we can try a different tack. Train to be a pilot and take a job flying private jets. Then one can get a...
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How much monthly salary does one need to travel in private jets in India on a regular basis?
#-Link-Snipped-#INR 60,000 x n  where n is the number of flight hours in a month in addition to whatever you feel like having for living...
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Self-made billionaires prove you can't be successful if you don't make time for these 6 things every day
#-Link-Snipped-# , I agree about cooking skills. Though I have workd a lot on food processing as a Chem E, I cannot claim  anything much...
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Naoh Scrubbing system required amount of naoh
From the data you indicated, the theoretical requirement to absorb the nearly 60 kg/hr SO2 produced is about 75 kg NaOH/hr.Are you using 12 m3 water/hr?...
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A steel ball of 10 mm diameter at 1000 K is required to be cooled to 350 K by immersing it in a water environment at 300 K
Is this an academic problem needing theoretically correct analytic solution or a practical problem? If a good approximation is sufficient one can ignore the calculus part....
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Naoh Scrubbing system required amount of naoh
Assuming 1.3 kg/m3 Fluegas density and taking into account the properties of SO2 one gets 1.86 x 40 or about 75 kg NaOH consumption/hr.Since the efficiency...
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A steel ball of 10 mm diameter at 1000 K is required to be cooled to 350 K by immersing it in a water environment at 300 K
Since this is a dynamic situation it is not possible for the whole steel ball to be at one temperature as the heat has to flow...
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