| Title | Description |
| Lightning |
Hi all, what is the probability of getting hit by lightning? I mean on Earth. |
| It'll Be Done in 24 Hours |
I had 3 things last week that were all "It'll be doe in 24hours"
Guess how many actually were.
Yup, none of 'em .
I was like a bear with a sore head.
One was a power supply board which we ordered on Tuesday to be sent overnight and they charged plenty for delivery.
It eventually arrived Mo |
| Selection of Input Circuit Breaker |
Please guide me technical parameters while selecting input main air circuit breaker like 3 pole or 4 pole (3p+N), no of protections etc... |
| Turbine Setting of Kaplan Turbine |
The turbine setting for kaplan for one of our project comes out to be 12m. can anybody suggest whether this is possible or not to have such a huge negative value for kaplan turbine. It would be better if answer is upported by some reference.
Project Data:
Unit size- 30 MW
RPM-214.29, specific spe |
| Somebody Can Tell Me the Meaning of Lining-Dua Plate 8 on 6? |
Somebody can tell me the meaning of Lining-Dua Plate 8 on 6? what is lining-dua plate, what is the meaning of 8 on 6? |
| Pressure Drop in Compressed Air Line |
Dear viewers,
i want to calculate pressure drop in compressed air line using formula
there are same formula have different substitutes which is true please help me to select accurate one
the formulas are
dp = 7.57 q^1.85 L 10^4 / (d^5 p)...........(1)
dp = (7.57 X Q^1.85 X L) X 10^(-10)/ (d^5 |
| Differential Protection Relay |
what is the differential protection, minimum rated transformer must be protected by diff. and where is it connected and how is it connected, advantages and disadvantages |
| Motor Normally Operated of Rated Current |
Hi guys, I just need your technical advise and help I on this.
There is a motor rated at 400VAC +10%/- 5%, 3 Ph, 50 Hz,0.37 W, FLC=1.5A.
Efficiency:0.62
Now I have to run it on the motor voltage at 410VAC ,3 Ph, 50 Hz. star connection ,DOL control with out any load ,but the amp is already at FLC: |
| Voltage Drop Calculation |
In voltage drop calculation, when the phase conductor is 2 sets and earth conductor is 1 set utilized, should i consider the resistance and inductance are half of the value that the conductor have? how do i calculate? |
| Sulfur Extraction |
I am making fuel from organic and hydrocarbon material. The fuel we are producing has a Sulfur content of 0.8% wt and 0.9% wt respectively. Does anyone know of an inexpensive way to reduce the S content to below ).5% wt. Thank you |
| Speaker Power Distribution |
I have two (2) JBL 16 Ohm High Frequency Compression Drivers connected in series for and 8 ohm load. They are rated for 150 watts each above 1 kilohertz (which is where the active crossover is set). The amplifier is capable of 215 watts output in this configuration.
Are these speakers sharing the a |
| Temperature Transmitter Calibration |
Hi
iam newer one
i have rosemount Temperature Transmitter and Pressure transmitter i want caliberate
i dont know the procedure can any body guide |
| Two Wattmeter Method |
When the input power to a 3phase load is mesuared by a two meter method, one meter is giving me a reverse reading, while i connected the two meters correctly. What maybe the reason/cause for the reverse reading. Am now confused on how to determine the power consumed. |
| Gas Nozzle Size, Pressure, Flow Equation |
Hello. I have little confusion about gas flow rate and pressure relation according to gas nozzle hole size. gas feed is a natural gas.
example - 1 if nozzle hole size is 3 mm dia
nozzle working pressure 100 m bar
so what would be the flow in meter cube/hour ?
if i want to dobble the the gas flow |
| Teardown: What’s inside Samsung’s Galaxy S4? |
From Electronics360:
Significant upgrades to the display, application processor and supporting memory along with a range of motion, light and environmental sensors pushed up the bill of materials (BOM) for Samsung Electronics' new Galaxy S4 smartphone to $236, according to a virtual teardown by the |
| EPA Proposes Increasing Ethanol Content in Gasoline to 30 Percent |
Less than a year after it approved the sale of E15 - a mixture of 15 percent ethanol with 85 percent gasoline - the EPA has begun to suggest doubling that percentage despite concerns about the existing levels of ethanol in fuel.
As reported by the New York Times earlier this month, the EPA' |
| Dubai's Growing Aviation Market |
Lately, most aviation news I come across mentions the growing aviation market in Dubai. Dubai's airports are relatively young, becoming a commercial entity in 2007 and since have exponentially flourished. Dubai International Airport (DBX) has become the world's third busiest airport that serves |
| Map of Every Known Piece of Space Debris Orbiting Earth |
From Geeks are Sexy Technology News:
A map of every known piece of space debris orbiting our planet.
Read the whole article |
| Graphene Brings the 2D Computer to the Horizon |
From DVICE News:
Graphene is pretty cool all by itself, but when it has the right dance partner, it can do the impossible.
Read the whole article |
| UK Astronaut Peake to Go into Orbit |
From BBC News - Science & Environment:
The UK astronaut Tim Peake is given a date to fly to the International Space Station.
Read the whole article |
| Study: Autonomous Cars Found Trustworthy in Global Study |
From Autoblog:
"Consumers Desire More Automated Automobiles." That's the title of one page of a new study published by Cisco Systems as part of its Customer Experience Report, which focuses on the "automobile buying and driving experience." The study specifically targeted technology an |
| Why Do Top Athletes Suddenly Develop the Yips |
From Scientific American:
hy do top athletes suddenly develop "the yips," a tendency to choke under pressure?
Read the whole article |
| Swiss Cheese and Dust Devils: 7 High-Resolution Shots of Surface Activity on Mars |
From Scientific American:
The arrival of NASA's Mars Reconnaissance Orbiter (MRO) at the Red Planet in 2006 ushered in a whole new era of Mars observation. With its ultrapowerful HiRISE camera, the orbiter has spied on the Martian surface to study curious features, some of them possibl |
| University of Glasgow Makes 3D Models with Single-Pixel Sensors, Skips the Cameras |
From Engadget RSS Feed:
Most approaches to capturing 3D models of real-world objects involve multiple cameras that are rarely cheap, and are sometimes tricky to calibrate. The University of Glasgow has developed a method that ditches those cameras altogether. Its system has four single |
