A transmission line section shows an input impedance of 36 ohm and 64 ohm respectively, when short circuited and open circuited. What is the characterestic impedance of the transmission line.

please any one have know-how about diaphragm pump selection and sizes and ranges of operating pressures , temperatures and design to post for all benefit

we have 4 nos 100MVA transformer at 220/34.5 kv rating, ynd1 group.

as per GTP drg current is 0.5A at no-load when we applied at rated voltage level.

but in site testing we applied only 415v at primary side i.e 220kv side. what will be the no-load current at that time?

regards

expalin about the vrv system? how its differs from normal cooling system?

What are Isochronous Mode & Droop Mode?

Also explain Load Sharing Philosophy.

We have generating units where the existing T90GS 4.2 MW machine will be operated in parallel with new SG-400 machine (11-13 MW) at rated load.. If the SG-400 trips while operating in parallel with existing T90GS 4.2 MW machine, then running plant load will be absorbed by the existing T90GS machine

From Neatorama:

A virtual high-five goes out to the engineer(s) that came up with this idea. As wonderfully fast as the bullet train is, all that stopping and starting takes time, which adds up. "A mere 5 min stop per station (elderly passengers cannot be hurried) will result in a

From Discovery News - Top Stories:

According to the most precise cosmological models to date, dark energy is a mysterious repulsive "force" that makes up the majority of the total energy contained within the universe. And yet, we have no idea what it actually IS. The Lawrence Berke

From CBC | Technology & Science News:

The U.S. Coast Guard says it will keep searching for 11 workers after an explosion ripped through an oil rig in the Gulf of Mexico off the Louisiana coast Tuesday. The blast ignited a massive fire on the Deepwater Horizon, which collapsed an

From Gizmodo:

Pepsi and Waste Management are teaming up to make every kid's on-the-go recycling dream come true with Dream Machine, a giant, computerized recycling bin that doles out points for returned bottles. Because who needs deposits when you can have dreams.

R

From CrunchGear:

I often wonder if plumbers reach a point in their career, after cleaning clogged drain after clogged drain, that they begin to hate plumbing. They hate pipes. They hate plumber's putty. They hate all the tricks they've learned over the years, and they hate the nee

From ESA Top News:

The most prolific space observatory will zoom past its 20-year milestone this weekend. On 24 April 1990, the Space Shuttle and its crew released the NASA/ESA Hubble Space Telescope into Earth orbit. What followed is one of the most remarkable sagas of the space a

From Discovery News - Top Stories:

Every move you make, every step you take, you can generate electricity. By cramming 20,000 nanowires into three square centimeters, scientists from Georgia Tech have created the world's first device powered solely by piezoelectric materials. A

From Popular Science - New Technology, Science News, The Future Now:

We're one step closer to the stuff of sci-fi and boy wizards. Researchers at the California Institute of Technology have engineered a metamaterial with a refined 3-D structure that gives light a negative refractio

From OhGizmo!:

Sometimes, 500 Nerf darts per minute is just not enough. Sometimes, you just need heavier artillery. Enter the Mk 19 Nerf grenade launcher, a faithful reproduction of the Mk 19 grenade launcher used by the military. Like the real thing, the Nerf Mk 19 is belt fed, it

I am curious as to if anyone can share with me how data is structured on CD/DVD/and BluRay disks, such as if you burn a backup of some folders off of your C:\ drive, where the data is located physically in respect to the disk itself.

I know that these optical disks start from the inner most pos

Dear friends,

I am facing a problem, actually I cannot explain what happen. I encountered fire in the apartment without tripping my circuit breakers. Actually this is what happen, I have a protection to my socket outlet in the kitchen which protected with 32A.ELCB installed in a distribution bo

Dear all,

I am facing frequent problem in shaft broken in my inclined screw conveyor.

shaft dia is 35mm.

I tried to control through relay. so that high current will make it to trip.

But still it broken.

I want to go for shear pin.

So please tell

Strange question I know but I am attempting to make a wooden flute and have two small problems. First one is that I need to measure the internal diameter of the sections (3) as I hand bore it and I must get accurate measurements. What instrument is available that will take the measurement and have e

Dear friends

I am facing a problem of synchronizing two hydraulic cylinders which are about 2000 mm apart and each is having a platform on it of the size of 600 x 1300 mm. Of course the cylinders will have guide rods on both sides. The load on each cylinder is 1600 kg and the it could vary