I M TRYING TO DESIGN NEW MODIFIED HELICAL GEAR BUT THE GIVEN DATE IS NOT IN OFF TO DESIGN THAT DEAR SO I NEED ( FORMULAS FOR MODIFIED HELICAL GEAR )

I have a 3 phase serial star generator and distribution panel to match.

It has to be wired to parallel delta to give lower voltages as I suggested !!

I say the distribution panel has to be reconfigured.

Am I correct ?

It is a marine application with star earth connected to refere

From TreeHugger:

As Alexandrium fundyense algae floats and swims in the water, it divides repeatedly, eventually creating the toxic bloom commonly called "red tide." In addition to dividing, however, it also produces dormant cells, or cysts, that drop to the ocean floor. Researc

From TreeHugger:

Qingdao, China, is famous for its temperate sea air and "Tsingtao" beer but, during the summer, the gentle coast becomes a fertile bed for massive, smelly, algae blooms. The last major bloom occurred in 2008 and threatened the sailing competitions of the Beijing Ol

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Anyone is aware of a switch which is used on the shaft side of the motor operated damper on outside air intake? This switch is connected to the shaft side of the damper motor. The purpose is to prevent boiler starting if the shaft is broken on the damper side. Govt. regulatory body has asked to prov

Hi, if I have a wye-wye connected transformer and its primary is not earthed solidly while the secondary side is earthed solidly, my question is

In a book I read it says "third and its multiples harmonics can't flow since primary is not earthed"

İs third and multiple harmo

1. What is the best starting method for 23MW, 11kV induction motor except electronic soft start.

2. Is ther any advantage if I chang the motor to synchronous one.

3. Will the thyristorised soft starter be more expensive than Korndorfer soft starter? If yes by what percentage?

thanks a

Pump prices to hit £1.30 a litre in the UK
Motorists are looking at pump prices of 130ppl by the end of the year, according to RMI Petrol. The organisation's chairman Brian Madderson warned that, while Chancellor George Osborne did not announce any increase in fuel duty in the Emergency Budget

Does anyone remember an audio effects device that preceded the "Echoplex" tape loop?

This device was based on a disk rotating in a viscous fluid containing metallic particles.

A recording head laid the information down and a playback head picked it up.

The fluid was called

From ScienceDaily: Latest Science News:

A swarm of flying robots soars into a blazing forest fire. With insect-like precision and agility, the machines land on tree trunks and bound over rough terrain before deploying crucial sensors and tools to track the inferno and its effects.

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

If a theoretical force-carrying, subatomic particle were to materialize in the universe and no one were around to hear it, would it make a sound? Existential aspects aside, physicists at the Large Hadron Collider

Check this out. It would be a great class project for physics and science classes.

http://tinyurl.com/284lt4k

Hello gents,

Tubing specification OD=3" ½ wt=0.254" Seamless 9.3ppf N80 EUE 8RD Pin*Box range 2 API 5CT information.

I am asking about this kind of tubing N80 if could we used in environment temperature as like flare line in order to burn a gas from oil production well?

For your

When a car company, either foreign or domestic comes on our market that gets 40+ mpg, Detroit is effective in killing it; despite the public wanting it. The claims they make you have heard; "ther're small and uncomfortable"; "ther're not safe", etc. The only reason they say this is to prevent the pu

Just ANOTHER DUMB QUESTION:

I am using a circular fan with these specs:

42"blades 14,445 cfm 500rpms 1/2 hp 7.6 amps.

The metal shroud around the entire fan is 20" wide.

The fan exhausts air from inside the shop outward, into the yard.

Does extending the shroud aro

I'm just looking for some recommendations on products that effectively block background noise (television, radio, conversations). Short of digging deep into my pocket for a Bose noise canceling headset, I wanted to know if anyone knows of / has used a product to muffle general background noise.

I'm currently using a 240vac Variable Frequency Drive that is in a control enclosure that I supply to a customer. The VFD runs off 240vac single phase ( two hot legs and a ground ) and outputs 240vac three phase for a 7.5hp motor. The question I'm being asked is the following: "VFD is going to Aust

There is a nameplate of 37 KW Induction motor

380 V, 50 Hz, 80.1 A, 2850 RPM, P.F 0.87

400 V, 50 Hz, 77.9 A, 2870 RPM, P.F 0.84

415 V, 50 Hz, 76.8 A, 2880 RPM,

what are the different types of valves for reciprocating engine?

please repply me when you know.