Engineering - January 2007

2007-01-05 05:46:31 · 2 answers · asked by miko m 1

AC single phase capacitor start motor

2007-01-05 05:39:02 · 6 answers · asked by stephen w 1

2007-01-05 05:38:47 · 2 answers · asked by miko m 1

2007-01-05 05:38:32 · 11 answers · asked by shibu_a_r 1

2007-01-05 05:15:52 · 5 answers · asked by damian a 1

2007-01-05 05:03:10 · 4 answers · asked by Anonymous

I need a chart of how much lift a specific rocket engine will lift and also how far it will go into the air. Also where I can buy Estes rocket engines on the Internet.

2007-01-05 03:42:11 · 2 answers · asked by pro1 1

The appliance is dual voltage -120 or 240.

2007-01-05 03:38:40 · 6 answers · asked by elfspirit3 2

which is the best of the two?

2007-01-05 03:32:47 · 13 answers · asked by Anonymous

2. AC Circuit Simulation
Design a class ‘Complex’ for complex numbers with suitable data members and member functions.
It should overload the following operators for the corresponding operations in complex numbers: +
(add), - (subtract), * (multiply) and / (divide).
It should also have member functions for accessing the value of the complex number both in
Cartesian form and polar form.
[50 marks]
Hence, write a program with objects of the above Complex class to calculate the voltage across and
the current through each component in one of the following AC circuits (to be assigned by lecturer),
over a range of supply voltage frequencies. The supply voltage is a 1-volt AC signal.
1. R-L-C Series Circuit
2. R-L-C Parallel Circuit
3. R in Series with Parallel L-C Circuit
4. L in Series with Parallel R-C Circuit
5. C in Series with Parallel R-L Circuit
All values should be displayed in polar form with two decimal-points and right-adjusted.
(See sample console output next page

2007-01-05 03:09:01 · 2 answers · asked by nadi m 1

We are having a little debate here in the office and we don't have a postage scale to settle it. My buddy says a can of soda weighs 12 ounces "see it says that at the bottom of the can!" he said. Well I say that is LIQUID ounces which are volume and NOT mass. For example if we emptied the soda out and filled the can with liquid paint it would still be 12 liquid ounces but it would weigh more than the can did when it was filled with soda.So the 12 ounces is NOT the weight.
Could someone PLEASE weigh a can of soda and let me know how much it weighs?

2007-01-05 01:57:22 · 5 answers · asked by Dave 4

2007-01-05 01:49:59 · 3 answers · asked by shirley p 2

2007-01-05 01:31:47 · 3 answers · asked by Natasha 1

I'm doing a project on Pyramids materials and I need websites!! as soon as possiable.

2007-01-05 01:28:18 · 2 answers · asked by Anonymous

c. Resistance .d. Inductance(l) .e. Capacitance .f. inpendance .g. Reactance .h. Power factor Describe an expression for each of them well possible

2007-01-05 01:26:05 · 4 answers · asked by dapperwilliam 1

How can I make a demonstration for my son's science project? Tried reversing the leads to one speaker (no luck), converted the stereo to mono with an adapter jack (no luck). Am using a stereo CD player as the audio source. I know it can be done. I worked in television for a few years and one day notice that there was a point in the room where the audio from the tape machine I was using dropped out. The engineer said that the audio channels were out of phase. Would appreciate your help. Thanks.

2007-01-05 01:21:31 · 3 answers · asked by Geno 2

1)What does it mean when a binary number is signed?

2)What does it mean when a binary number is signed magnitude?
eg: convert 11001101 to a signed magnitude number.

3)What does it mean when a binary number is unsigned?
eg: convert 175 to an unsigned binary number.

4) How would you work out a binary number that is to be divided. eg: 01100011 / 00001011

any help would be greatly appreciated.

2007-01-05 01:20:27 · 5 answers · asked by Anonymous

2007-01-05 01:18:22 · 2 answers · asked by RAJ K 1

A uniform pulley has a mass of 20kg and a radius of 150mm. A rope passes over it and is attached to a load of 10kg. What force must be applied to the other end of the rope to give the load an upward acceleration of 0.2m/s? Can anyone help me out with the formulas for this?

2007-01-05 01:00:19 · 4 answers · asked by catchinit 1

I need to know what Reynolds number is, and when and how we use it. It is from fluid mechanics

2007-01-05 00:35:45 · 5 answers · asked by alex 2

I need it because I wanna know how helicopters take off and fly. I think this question is enough for today.

2007-01-05 00:32:31 · 4 answers · asked by handakina salem 1

2007-01-05 00:08:23 · 5 answers · asked by chetan b 1

2007-01-04 22:55:55 · 2 answers · asked by ((Gaining knowledge.) 2

1. Which type of Ferrous metal would be suitable to make tough kitchen sink units from? The surface would have to withstand shocks and wear and water flooding.

2. Name the Ferrous metal that most work-shop tools are made from?

3. Give an example of a suitable ferrous metal that may be used to make garden tools?

4. Why are the majority of wire electrical cables made from copper?

5. Name a Non-ferrous metal that is used to protect dental nurses, doctors and dentists from the harmful radiation that is given off when using X-rays?

6. How are steel corrugated roofs made water resistant?

7. Why are the panels of Land-Rovers made from Aluminium?

8. Name a Non-Ferrous metal that is suitable to make ornaments ? Name the industrial process used?

9. Give the name of the metal that is suitable to make jewellery from? Why is it a good choice?

10. Why is High tensile steel an ideal metal to make car gears from?

2007-01-04 21:39:12 · 4 answers · asked by Anonymous

from where i can get IS, ASTM, ISO standards for free

2007-01-04 20:55:26 · 2 answers · asked by anish 1

glows automatically

2007-01-04 20:17:47 · 10 answers · asked by Aditya S 1

2007-01-04 18:51:14 · 3 answers · asked by Anonymous

I wonder how overhead cables (like telephone, cable TV etc) running one skyrise buiding to another are laid.

2007-01-04 17:48:45 · 3 answers · asked by James Bond 1

I need to get a comparator to trigger a switch that powers an electric motor. My circuit is set up correctly insofar that the comparator outputs current when I need it to, but I need that output (barely .5mA) to be able to trigger a switch that can handle up to roughly 40A. I'm considering using a relay, but I'm not sure how to find one that fits those requirements; I don't have a great understanding of the various terminologies and characteristics of relays. =^(

Any help here would be awesome. Thanks!

2007-01-04 16:28:29 · 9 answers · asked by frostwizrd 2

2007-01-04 16:19:45 · 3 answers · asked by econdrone 2