Engineering - April 2007

2007-04-08 04:43:33 · 1 answers · asked by sinfullangel 1

i need to convert single phase power source 220volts to three phase same voltage to supply my 11kw , 3 phase induction motor

2007-04-08 04:28:20 · 3 answers · asked by Jeffrey E 1

I understand that if you have a wind generator it will automatically shut down in case of a power failure to prevent electrical shock to the power company repairmen.Does this mean if there is a huricane and the power was off for weeks you would not be able to use the generator to power your house during this time?

2007-04-08 04:24:53 · 4 answers · asked by Frank M 1

2007-04-08 02:12:28 · 1 answers · asked by mechanswer 1

2007-04-08 01:04:18 · 1 answers · asked by mechanswer 1

You don't touch the plug with water, just the bulb, say, about half of it- will it break the bulb, or can it take it?

2007-04-07 23:49:03 · 16 answers · asked by Buzzard 7

2007-04-07 22:09:27 · 3 answers · asked by endgame1915 3

The names escaped me, but those towers, normally in the bush or country, which are huge metal structures (almost 100m/300ft tall), you can see them from miles off, that can stretch the cables across valleys, etc. They're just a metal skeleton basically.
I'm not sure if the names different in the USA but I'm looking for the Australian name never the less.

2007-04-07 21:37:05 · 6 answers · asked by Anonymous

2007-04-07 20:43:56 · 2 answers · asked by Numil 2

2007-04-07 18:44:09 · 7 answers · asked by Ashiq S 1

2007-04-07 16:31:00 · 2 answers · asked by jo 1

A pipe open at both ends has a fundamental frequency of 310 Hz when the temperature is 0°C.

(a) What is the length of the pipe?
(b) What is the fundamental frequency at a temperature of 30°C?

2007-04-07 15:57:21 · 2 answers · asked by Anonymous

ok, so a basic electric motor is a ball of copper wire that turns when electricity is applied... I want to take that motor and make it so I can vary the speed of it, like the harder you press the botton, the faster it will go.

what do I need????

2007-04-07 15:12:12 · 9 answers · asked by Anonymous

2007-04-07 12:38:11 · 3 answers · asked by Anonymous

The circuit characteristics...voltage supply is 117v, Impedance1 is 2k at 0degrees, Impedance2 is 1k at -45degrees and impedance3 is 5k at 30degrees. What is the apparent, real, reactive power and the power factor. It would be better if you can show the work in steps. thanks in advance!

2007-04-07 11:31:43 · 3 answers · asked by Anonymous

One of the following is NOT a characteristic of the emitter follower amplifier


A) high current gain
B) very low output resistance
C) low voltage gain
D) low power gain

2007-04-07 11:25:14 · 3 answers · asked by sam19000 3

2007-04-07 11:23:37 · 7 answers · asked by KHAMES 1

Equal volumes of 1 molar hydrochloric acid (HCI) and 1 molar sodium hydroxide base (NaOH) are mixed. after mixing, the solution will be

a)strongly acidic
b)weakly acidic
c)nearly neutral
d)weakly basic

explain please

2007-04-07 09:26:23 · 4 answers · asked by BOO 1

2007-04-07 09:17:03 · 4 answers · asked by charliewoman 1

I want to take apart an old fridge. How do I find and discharge the capacitor? What's the worst I could get shocked if I mess this up?

2007-04-07 09:01:30 · 9 answers · asked by actaha 2

why the pump suction pipe is larger than delivery pipe.what is exact reason ?

2007-04-07 08:39:08 · 5 answers · asked by Nilesh R 1

i was just wondering how cautious i have to be -- i'm paranoid with leaky batteries -- don't even really know how to tell if they leaked. how to differentiate between dust and leakage?

2007-04-07 06:45:20 · 3 answers · asked by Anonymous

PLEASE TELL ME ANYTHING YOU KNOW PERTAINING TO THIS SUBJECT!☺

2007-04-07 05:18:01 · 2 answers · asked by Anonymous

2007-04-07 04:57:27 · 3 answers · asked by otto 1

Know about the hurdles in reducing it to 110 volts? Will it be too expensive?Whether it was originally distributed in those countries at 220 volts and subsequently reduced to 110 volts...

2007-04-07 03:45:05 · 9 answers · asked by orveeor 3

2007-04-07 01:53:43 · 7 answers · asked by lathajtasha 1

2007-04-07 01:35:26 · 2 answers · asked by lathajtasha 1

hi friends
i m confused beween to amplify and to increase the energy level of signal can any one explain me with example pls?

2007-04-07 01:29:47 · 2 answers · asked by maulik 1

2007-04-07 00:23:47 · 12 answers · asked by atilla.smith 1

i want to know when the use of inverters for the control of motors/industrial drives started,the different stages of improvement witnessed and the challenges being worked on today

2007-04-07 00:19:06 · 1 answers · asked by jinnyjalo 1