What's This and Where Would You Use It?

Working in a mates workshop, I came across this "bit" and asked the friend what it was, he said "I don't know, I didn't know I had one of those"

So, I'm here to find out what this is, and what you'd use it for?

The images are directly off my mobile phone...

I'm sor

Transformers

1.Why cant convert single phase into three phase by the concept of parallel operation of transformers?

2.Why cant we increase the power using transformers?

3.is ohms law is applicable for transformers?

PERMANENT MAGNETS VS BATTERIES

With the availability of extremely powerful permament magnets like the Neodymium, can we ever see permanent magnets acting as a source of stored energy like batteries? I found that Neo magnets have a capacity of about 400 KJ / m^3. A Car battery of say 12 v, 20 Ah or 240Wh or 864KJ has a volume of a

turbine and gen coupling problem?

i want to install a common emergency stop push butoon for all generators units to be all stoped togeather in emergency case, but i want to know if there is a problem will happend in coupling between the turbine and the gen shaft if the load suddenlly removed and circuit breaker opened? if that true

Hydraulic Cylinder Calculation

Hi every visitor ! I am designing one Plate bending machine, it has 125mm Thk. M.S. plate upto 7000mm width bending capacity, this will be three roll bending machine which will bend a pre bended plate ends. Main top roll Diameter is 800mm, and bottom two roll diameter is 700mm, i am going to use hyd

Crusading for Wind Off Cape Cod

The 10-year debate over the Cape Wind project proposed for Nantucket Sound, MA, will come to a head in April when a final decision is issued by the U.S. Secretary of the Interior. The 420 MW capacity system includes 130 turbines to generate 75% of Cape Cod's power needs. Lawsuits brought by opponent

Open vs Closed System and Products

On the manufacturing side, engineers have said for decades that proprietary software and hardware design drives up costs. So, can we convince OEMs that following an Open System protocol can be worth it economically? Perhaps we can take a tip from the consumer appliance sector; enter Google and its n

what hoist for hauling shopping and fire wood

We live in a Spanish villa built on a hillside. Living area is 3 stories up and we find it increasingly hard to haul the shopping and fire wood up the stairs. There is a direct drop from the terrace to the ground level. Can anyone give me any ideas what we should look for in a hoist, probably

Battery Charger Ripple content

We have a 24V Battery charger supplying around 400 Amps DC load and also giving the float charge to the back up battery bank in Constant Voltage mode. This charger is more than 15yrs old. The present problem is that the ripple content is very high and the Instrumentation team is apprehensive that th

Do You Text While Driving?

A New York Times article reports that even though the risks of driving while talking on a mobile phone have gotten wide airplay in the media, drivers — and even legislators — don't seem to be paying much attention, or haven't much motivation for change. Another article highlights how tru

Is Network Neutrality a Big Deal?

The FCC seeks to preserve an open Internet. That means ensuring there is no interference in sending and receiving lawful content. It also means everyone has a right to use lawful applications, services, and content providers. There should be no discrimination. ISPs claim that net neutrality will lim

Is the Army Talking Trash about Trash?

The U.S. Army is investing a lot of time and money into turning garbage into diesel fuel for both vehicles and generators. The amount fuel used overseas is tremendous: more than 68 million gallons of fuel every month; and transporting fuel is very dangerous. But the gasification process itself is co