Engineering - August 2007

i gotto do a project on this! gotto make a working project involvin an IC or an op-amp!

2007-08-30 06:37:50 · 6 answers · asked by Anonymous

Find the dimensions of a right circular cone of minimum volume which can be circumscribed about a sphere of radius 12cm...

2007-08-30 05:19:41 · 3 answers · asked by Elijah Morisette 1

That system must be open to the atmosphere at the top. The contest is to see who can get the most pressure over an area of 10in^2 on the ground. The only thing you can use to get the pressure is gravity and the water. What shape would your system be and what would be the pressure on the 10in^2 area at ground level.

2007-08-30 04:06:37 · 4 answers · asked by Anonymous

I'm trying to find out what formula to use for Hydrogen flow coefficient Cv. If you know please help me out

2007-08-30 03:55:15 · 2 answers · asked by hckymanr 2

I have to do a project which has to be handed in, in 5 weeks. The project is to test and build a line following robot using a programmable interface chip. Any suggestions on where to find such schematic diagrams would be greatly accepted. It has to be automated so it has to run of batteries. Thanks in advance.

2007-08-30 03:17:29 · 4 answers · asked by wayne319059 2

What makes them different means where a RTD is used and where a thermocouple???

2007-08-30 03:04:05 · 4 answers · asked by Anonymous

A sine wave has a peak value of 100V. What are the average value and rms value?

2007-08-30 02:59:10 · 4 answers · asked by Anonymous

how many seconds is the period of a sinusoidal radiation from a station FM100 at 100 MHz ?

2007-08-30 02:54:43 · 2 answers · asked by Anonymous

Please name it and function.

2007-08-30 02:33:58 · 3 answers · asked by Rofaif 1

Show how you should connect nine 100Ω resistors each rated at 10 watts so that the combination will still be equivalent to 100Ω but with a much higher power rating of 90 watts.

2007-08-30 02:05:54 · 5 answers · asked by andrew 1

5. A step-down transformer rated at 500 W can supply 110V 60Hz (secondary) from a 220V 60Hz (primary) line voltage. If the secondary is connected to a 2.5V DC supply, what voltage can be expected at the primary side?

2007-08-30 02:05:15 · 5 answers · asked by andrew 1

1. How much power will a 740W electric flat iron rated at 220V 60 Hz consume if 220V DC is used instead? Assume here that the iron is purely resistive and that the resistance does not change with a change in voltage.

2007-08-30 02:04:17 · 2 answers · asked by andrew 1

Determine the resulting % power savings of a typical household in the Philippines if the line voltage drops from 220V to 200V (rms). Assume that 2.5 kW is used by the household for an average of 12.7 hours per 24-hour day and that the equivalent total resistance of the household fixtures and appliances do not change with a decrease in line voltage.

2007-08-30 02:03:07 · 4 answers · asked by andrew 1

2007-08-30 01:26:58 · 3 answers · asked by Seadog 3

Specifically, metric bearing locknut shaft dimensions. I have all kinds of data on THREADS PER INCH

2007-08-30 00:57:03 · 2 answers · asked by debsmygirl 1

To compress air, do you just put more and more air into a container? Its just that I have difficulty imagining compressors just pushing more and more air into a container. Is this what happens? Or is there something else involved?

2007-08-30 00:35:24 · 5 answers · asked by Anonymous

as i get the information from internet,an unscientific test (using one wiper motor and a torque wrench) found that at 12 volts, on high speed, the motor has 13.5 pound-feet and on low speed, has 17.5 pound-feet of stall torque. why this happen while the current drains to the motor during no load for high speed is higher than low speed? (high speed no load current is 1.95A; low speed no-load current is 0.9A) the higher the current mean higher power input, but y the torque is less?

2007-08-30 00:18:06 · 3 answers · asked by seongjin85 1

2007-08-29 22:05:53 · 2 answers · asked by BHUVANA K 1

sprayed with ink, thin layer of something....we're being inquisitive!!!

2007-08-29 21:35:12 · 9 answers · asked by Carrot 4

that is like being god like because god made man
and we will do the next best thing like that,

wea re aere all copy cats

2007-08-29 21:24:23 · 7 answers · asked by Anonymous

Also whats the ratio from candlepower to Lumens?

2007-08-29 21:08:04 · 4 answers · asked by bludvl27 1

What is PID control?

2007-08-29 21:00:13 · 5 answers · asked by Anonymous

2007-08-29 20:29:54 · 6 answers · asked by Rishabh.... 1

2007-08-29 18:54:31 · 4 answers · asked by nija mol L 1

How would I go about becoming and air traffic controller? What's the pay? How much training is required?

2007-08-29 18:40:29 · 6 answers · asked by Anonymous

2007-08-29 16:36:42 · 2 answers · asked by devinci400 1

I hoping there is an easy answer to this question. I am starting a basment remodel on my single story home. The three 2x10's are currently supported by two Jack posts 8 feet apart. I would like to have a clear span. Is it possible to span this 25 feet with an I-beam supported by Jack posts on the ends? And if so, how big? I have 8 foot ceilings so I can afford to give up some head room for a beam.Thank you for your help.

2007-08-29 15:56:58 · 5 answers · asked by tebope 1

Please tell advantages & disadvantages of both?

2007-08-29 15:01:12 · 3 answers · asked by A learner 1

tan color, thin as four sheets of paper, actually measures 3/4 by 1 inch

2007-08-29 14:17:10 · 1 answers · asked by p h 1

2007-08-29 13:33:25 · 7 answers · asked by glagh 1