Engineering - April 2007

when you need to cut new external threads on a bolt, which of the following tools should you use
a. A die
b.A hacksaw
c.A tap
d.A diamond-point chisel

ps. i know it has to be a or c

2007-04-02 12:31:14 · 2 answers · asked by Anonymous

I want to be able to pick sound up with only a small speaker and a diode (i have used germaniums) without any amplifier there but then a bunch of amplifiers hooked up to an am transmitter (oscillator) with the input being an ipod. is this possible? So all-in-all, an ipod goes thru a bunch of amplifiers, then to the am transmitter, travels thru the air in highpower freq.'s and is picked up by a diode attached to a speaker. Any suggestions or critiques? thanks a bunch

2007-04-02 12:26:36 · 2 answers · asked by David H 1

I read how Tesla's AC won out over Edison's DC because AC can be reduced with transformers. When I look at an animation of a DC generator, it looks like it's output is pulsating DC. Don't transformers work with that, ala a car's spark coil and points? Why couldn't Edison use transformers with pulsating DC from generators?

2007-04-02 12:16:41 · 3 answers · asked by Sand M 1

Many thanks to those who responded earlier but those answers were not quite addressing what I was looking for.

I am thinking of the case of a typical pole mounted single phase distribution xmfr with loads on both sides of the center tap. If the secondary of the transformer is center tapped and the other two leads from the secondary are going from positive to negative with the AC current, that means that the center tap is either more negative or more positive than either outside lead at any given time.

If at a given instant the top lead is positive, then the center tap is more negative than the top lead. The current should flow from the top lead to the center tap. However, isn't the center tap more positive than the bottom lead at that same instant? Wouldn't the current therefor flow out of it into the bottom lead? (assuming loads connected to both sides of the tap) Flowing inward from the top lead and outward to the bottom lead at the same time. How does that work?

2007-04-02 11:46:25 · 5 answers · asked by Sand M 1

????????????????????

2007-04-02 11:40:21 · 7 answers · asked by A P 1

in electronic discrete parts

2007-04-02 11:35:51 · 2 answers · asked by John G bullhead 1

Can 1960s TV supersub be built with acrylic O Nose fwd.
Sub specs:
800 ft long, X400 ft wide.
Depth: 1,200 ft.
Crew: 200
Carrys diving bell, ROVs, EV suits.
Ice armor upper hull.
New hydrodynamic hull shape.
If anyone cares to play with design on AutoCAD, fine.
Good class project.
Sub is Nuclear
& NO weapons.

2007-04-02 11:03:05 · 4 answers · asked by STEPHEN R 5

It has something to do with physics.

2007-04-02 11:00:47 · 6 answers · asked by lil_momo_06 1

that will go fast and go along distance and is simple to built.

2007-04-02 10:52:26 · 9 answers · asked by ? 4

2007-04-02 10:30:12 · 5 answers · asked by Anonymous

is it the difference between education?

2007-04-02 10:23:11 · 4 answers · asked by idroppedouton420 1

2007-04-02 09:50:29 · 2 answers · asked by Anonymous

2007-04-02 09:36:14 · 1 answers · asked by dharmesh m 1

2007-04-02 09:23:19 · 5 answers · asked by Anonymous

The tetrahedron will be sort of distorted. Two out of the four triangular sides will be made out of the back and the bottom of the cube. If looking straight at the bottom/ back edge of the cube, the two triangles of the tetrahedron should look like this: <|>. The line in the middle represents the edge.
I really need help cutting the other two triangular sides which slope down in a weird way.

2007-04-02 08:19:27 · 1 answers · asked by Maniacle 2

2007-04-02 08:13:46 · 5 answers · asked by Bernard F 1

What is Kirchoff Law ?

2007-04-02 08:13:16 · 3 answers · asked by Bernard F 1

I passed my EIT about 10 years ago in California but due to a move I lost all my paperwork and now that I'm looking for another job I would like to locate my license number again, have to redo my whole resume. Any ideas on how I can find my EIT license number, thanks.

2007-04-02 08:07:39 · 0 answers · asked by choyryu 2

2007-04-02 07:50:35 · 11 answers · asked by WWF Decade Impaired Fan 2

2007-04-02 07:35:45 · 6 answers · asked by Anonymous

After getting a B.S in Mechanical engineering, can i get a masters in a different type of engineering, like civil, structural, enviromental, architectural??
- does the opposite also work?( B.S in civil then M.S in mechanical)

2007-04-02 07:31:25 · 4 answers · asked by nigz1013 1

2007-04-02 07:30:46 · 5 answers · asked by mah.alaa 2

What direction does the current flow? It looks like the current in the tap would have to flow in two directions at once since the tap is both more positive and more negative than either end of the winding at any given moment.

2007-04-02 06:56:30 · 5 answers · asked by Sand M 1

2007-04-02 06:51:36 · 1 answers · asked by KAZI M.SAEED J 1

2007-04-02 06:43:00 · 5 answers · asked by buzz 1

if u know the answer pls share ur idea with me

pls email on my id

2007-04-02 06:42:01 · 5 answers · asked by lokesh702 1

2007-04-02 05:43:53 · 7 answers · asked by shybong 1

What are the procedures, the materials and the guidelines needed to carry out a road construction?

2007-04-02 05:40:36 · 5 answers · asked by Felixo 1

2007-04-02 05:21:51 · 1 answers · asked by Anonymous

how much and what kind of manpower and material would be needed if someone was to build 2 bridges from seattle, wash to juneau, ak and from either los angeles or san diego, calif to hilo, hi. and how long would it take (weather permitting)? and what kind of bridges should they be?

this isnt for a class or anything imporant, im just curious

2007-04-02 04:45:55 · 2 answers · asked by jamz 5