 | Recent Questions & Answers | |
| Wattage Equivalents for Different Voltages |
| By paulgeiger in Electrical Engineering |
I want to run a 120v. heater element on 12v. I want to know how much wattage (amperage) it will draw on 12 volts. I know the wattage will be lower, but I seem to remember that it will not decrease by a simple factor of 10 just because the voltage is 1/10th. Is this correct? And how do I figure what ...more |
| MCB Connections |
| By Anonymous Poster in Electrical Engineering |
Can we interchange the MCB incoming & outgoing side? What I mean to say is can we connect the incoming cable to outgoing side of the MCB & use the incoming side of the MCB to connect the outgoing cable? Is this practice acceptable? |
| Air Velocity Calculation in Pipes |
| By piping_engineer in Mechanical Engineering |
Hi guys, I want to calculate air velocity or volume flowrate in 0.5" (2mm thickness) tube. Air is stored at 100 bar pressure. Then air pressure is reduced (with the help of Reducing Valve) to 10bar pressure and then air enters 0.75" (2mm thickness) tube. Now the tube (0.75") enters into a tank (whi ... more |
| 1756 AB PLC - Input Bits Getting Latched |
| By anbarasu.pr in Instrumentation |
We are having 1756 PLC at 3 different location / 2 AB 1250 Panel view plus with 1 SCADA & interconnected with ethernet network.Certain field equipments also connected to I/O's. At present we are facing the following problem rarely, i.e. one or two input bits are getting latched (It is not getti ...more |
| AVR Changing with Different Type |
| By bedane in Electrical Engineering |
hi all I am planning to change an obsolete stamford avr (series 3 part number 450-11700) with datakom product avr 8 automatic voltage regulator for old 250 kva cummin generator set. this is because we need the generator working as soon as possible and we don't have the compatible avr at hand.(avr-8 ... more |
| Woman of the Week – Nancy Currie (1958-) |
| posted in WoW Blog |
Nancy Currie is an engineer who served in the U.S. Army for 23 years and became an astronaut in 1990. She is a veteran of four space shuttle missions, having logged 1,000 hours in space while flying as a mission specialist. Currie began working with NASA's Johnson Space Center in September 198 ... more |
| Keeping Drones Out of Enemy Hands |
| posted in Defense & Security Technology |
After the U.S.RQ-170 Sentinel drone came into possession of Iran, officials were worried about top secret stealth technology being compromised. To keep this from happening again, wouldn't it make sense to install some kind of electromechanical or other failsafe device to render such technology usele ... more |
| Are You Doing More Metal Processing Online? |
| posted in Metals & Alloys |
More industry professionals are using metals processing simulation tools to enhance their applications, from welding to casting. Based on your experience, how much more efficient has such software made your organization, and are they living up to your expectations? The preceding article is a "sneak ... more |
| What's Your Technology and Workstyles Forecast? |
| posted in Sensors & Switches |
In this Network World article, several futurists and technology analysts outline significant technology trends that they see, as well as changes in workstyles that may be either results of technology advancements or drivers of technology trends. Among those cited: mobile devices replacing desktop an ... more |
| GM Builds its 100 Millionth Small-Block? |
| posted in Hemmings Motor News Blog |
It would be easy to say (or write) that GM has made countless small-block engines over the years. But, it wouldn't be true, because GM has, in fact, been counting. Sort of. On November 29, GM produced what they are calling their 100 millionth small-block engine, a 638hp, supercharged LS9 destined f ... more |
| Efficiency and Performance of an AC Unit |
| By RyanC83 in Mechanical Engineering |
Dear All As a requirement for choosing an effient airconditioning type/ model I usually review the COP and EER along with the electrical requirement of the unit. Obviously nowadays we are dealing with inverter types, however I would like to ask you what further parameters one should note in order t ... more |
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