Engineering - September 2007

2007-09-26 04:11:12 · 2 answers · asked by Richie57 1

If i needed to pump 900,000 litres of water per minute at 1,000 bars (14,500 psi), What horse power motor would I need.

Whats the calculation or equation that you use?

2007-09-26 03:46:16 · 5 answers · asked by Anonymous

i have a room of the volume of 2156 cubic feet. i need to calculate the amount of air in pounds of mass that is in the room.. how di i do that ??? i also need to find out the amount of water vapor that is in the room if the temp. is 70 deg fer. .. please help !!

2007-09-26 03:15:28 · 5 answers · asked by masrbobo 1

2007-09-26 02:55:00 · 6 answers · asked by anuj k 1

Actually I am looking for conversion of high torque dc motor to digitally controlled servo motor using pot or encoder in simpliest way ..... i can use my PC for initial modelling.....

2007-09-26 01:43:39 · 4 answers · asked by Nicku 1

2007-09-26 01:17:43 · 6 answers · asked by raju 2

2007-09-25 22:17:41 · 5 answers · asked by Anonymous

I am designing electrical pannels for residential buildings and would like to know if there is a program that can help me rearange the power consumption on a 3 phase circut so as not to overload 1 phase and have a high electrical bill.

2007-09-25 21:48:10 · 2 answers · asked by sawayalfred 2

This question is with refrence to sea water based thermal power plant.

2007-09-25 21:15:09 · 3 answers · asked by deepak_8584 1

GENERATION AND DEMODULATION OF AN AMPLITUDE SHIFT KEYED (ASK) SIGNAL

2007-09-25 20:27:37 · 1 answers · asked by lan 1

Hey i need help with a physics project

I have to make a device that can travel one meter and carry 1 kg of mass...

so the basic thing is

u set it down ( u can do something but cant push it ) and then it has to travel one meter carrying 2 pounds ...

any ideas?

no battery/electric,gas,rocket powered objects

i was thinking something elastic ? ( but of course not necessary )
please help if u know

2007-09-25 18:27:10 · 5 answers · asked by Jay a 2

how is that relates to the glass which inhibit the characteristics of liquid?

2007-09-25 16:37:55 · 8 answers · asked by rionaerith 1

2007-09-25 16:18:43 · 3 answers · asked by rionaerith 1

i have to build a popsickle stick bridge for a project and i also have to come up with a company name for it...can u help?

2007-09-25 13:47:37 · 10 answers · asked by Anonymous

2007-09-25 13:09:02 · 1 answers · asked by zack 1

A resistor with a tolerance of 5% has a nominal value of 2.2kohms at room temp (20 deg celcius) it is rated at 2500 PPM/deg celc. find the range of resistances expected at 90 deg celc


the notes for this question that are supposed to tell me how to do it say The normal range is 2090 to 2310. Add 17.5% to each...

where did 17.5% come from

2007-09-25 12:19:55 · 1 answers · asked by sn4ke1 3

Why is it so impossible to come up with a way for heavier machinery to be run on a prepetual motor? Like a car for instance...

2007-09-25 12:03:54 · 4 answers · asked by Anonymous

2007-09-25 11:59:51 · 2 answers · asked by Shirley P 1

2007-09-25 11:58:24 · 2 answers · asked by sk k 1

Explain how the mechanical advantage of a wheel and axle change as the size of the wheel increases

Thanks!

2007-09-25 11:31:25 · 1 answers · asked by Justin 3

(showers)
Power in kw to flow rate in litres per minute?

2007-09-25 11:02:52 · 2 answers · asked by Anonymous

2007-09-25 10:57:22 · 5 answers · asked by akyl_riza 2

2007-09-25 10:19:43 · 1 answers · asked by Anonymous

I am an engineering student and I am interested in designing a device that can transmit data to a computer wirelessly. I am trying to look into Bluetooth chip and Wi-Fi chips but am not finding a whole lot for Wi-Fi.

Does anyone know pro's and con's of using Bluetooth vs Wi-Fi.

Also does anyone know some good manufacturers/distributors that I can make bluetooth or Wi-Fi chips that are transmitters? trying to find one that is the no bigger than a half dallor coin.

Or if there are any other good choices for wireless transmission I would be pleased to hear it.

Thank you

2007-09-25 09:51:58 · 1 answers · asked by kevins963 2

2007-09-25 09:33:07 · 2 answers · asked by sithgreg 1

how to encode a 12 input key pad into 4 bit using only 4 to 1 MUX or 16 to 1 mux? Assume that the key pad has no row and column scanning. No key pad encoder is allowed in the design. Need a design drawing in JPEG file here..

2007-09-25 08:20:46 · 1 answers · asked by Thian Chang Tan 1

I am CORGI reg but only just qualified I have been in a house which needs a new boiler fitting but the house is that old the gas pipe is lead should I just take all this out and replace with copper or just go from lead to copper by the boiler with a leadloc Thanks

2007-09-25 07:18:40 · 5 answers · asked by Anonymous

2007-09-25 06:46:58 · 3 answers · asked by princes3242000 1

2007-09-25 06:24:47 · 1 answers · asked by Anonymous

Using truth tables to determine which expressions in each of the groups are equal:


F= ac' + a'c + bc
G= (a+c)(a'+b+c')


can someone show me how to do this problem please! Thanks so much

2007-09-25 06:19:44 · 1 answers · asked by chs_soccer_02 2