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Electrical Engineering
Electrical engineering is a field of engineering that deals with the study and application of electricity, electronics and electromagnetism.
23,056 Questions
How do you convert dwg autocad to pdf?
First of all, if you have AutoCAD viewers, no matter if it is a Full version of AutoCAD, an LT AutoCAD or even if it is an AutoCAD DWGTrueView, you can use a PDF virtual printer to get PDF directly from AutoCAD.
For AutoCAD users
DWG to PDF.pc3:
There is a default DWG to PDF.pc3 listed in AutoCAD printers, use this PC3 file to get PDF files.
Virtual PDF printer:
If you have a virtual printer, you can now directly print to PDF with it.
For non-AutoCAD users
If you still need to view drawings before getting the PDF, you need to find some applications which can view and let you convert to PDF.
Autodesk DWGTrueView and other viewers:
Get a free download of Autodesk DWGTrueView and print the drawing into DWG with some virtual printer in DWGTrueView.
Other viewers which can view and print or convert CAD drawings into PDF:
Search online and you will find there are lots of applications which are capable to do the both. See the related links below that I recommend.
AIGraph CAD Viewer:
Supports batch converting DWF/DXF and Dgn files to PDF.
DWG to PDF Converter:
DWG to PDF Converters should be able to batch convert DWG/DXF/DWF drawings for most of them are shareware and you need to pay to get the conversion or service. Such converters should be capable to:Batch convert DWG/DXF/DWFConvert all the drawings in a list into a single PDF
Convert separate drawings into PDF one by one
Convert one PDF per layout in the drawingXREF files and ShX fonts supportivePDF page sizeColor modeLine weight
You can convert DWG to PDF in just three steps. Follow the guide below the source: How to convert DWG to PDF easily.
Why will a light not work on knob and tube wiring with 120V of power on meter?
According to www.wilberelectrical.com knob and tube wiring is no longer legal. You will need to replace it. Chances are, as knob and tube wiring is very, very old, something has broken or it has been disconnected as knob and tube is not very safe. I would recomment replacing it with modern wiring devices rather than trying to repair it.
USE IMPULSE RELAY... FOR ALTERNATE OPERATION OF MOTORS OR CAN BE COMBINED WITH A TIMER IF REQUIRED. MOTOR SUPPLIERS USUALLY PROVIDE DIAGRAMS WITH DIFFERENT STARTING METHOD OPTIONS. CHECK WITH ABB, SCHNEIDER ELECTRIC, GE, CUTLER-HUMMER CATALOGUES, ETC., AND YOU WILL FIND ALL INFORMATIONS FROM CONTROL WIRING DIAGRAMS UP TO ITS COMPONENT PARTS.
http://everything2.com/index.pl?node=electrical%20conductivity I think the above link should answer this question.
What is the difference between ATS panel and AMF Panel?
ATS (automatic transfer system panel) it will transfer load from main power to emergency without operation when the power source drop below 80% or normal voltage while
AMF (automatic main failure panel) this will substitute as main electricity source and reserve the generator if the main supply fail or down.
Introduction to power and power factor?
The power is the product between the magnitude of voltage and the magnitude of current. Whereas the power factor is a ratio between the active power and the apparent power.
How do i Calculate base current from collector current and resistance?
Ib =Ic /beta beta is the gain factor of the amp.
Is it proper procedure to ground the frame of a portable motor?
Yes, unless the tool is specifically designed for use without a ground.
If this is a homework assignment, please consider doing it yourself, so as to maximize the value of the reinforcement to the lesson provided by the exercise of actually doing the homework. If you must read this answer, please understand each point completely before proceeding to the next point.
The total current flow through a parallel circuit is the sum of the individual current flows through each branch. Kirchoff's current law states that the signed sum of the currents at a node is zero. Stated another way, the sum of the currents entering a node is the same as the sum of the currents leaving the node.
Break the circuit into its component parts, a 2 ohm, a 4.3 ohm, and a 7 ohm resistor, in parallel. What do you know about these three resistors?
They all have a voltage of 30 volts.
Take Ohm's law, current equals voltage divided by resistance, and calculate the current through each resistor.
30 volts / 2 ohm's = 15 amperes.
30 volts / 4.3 ohms = 6.98 ampers.
30 volts / 7 ohms = 4.29 amperes.
The sum of the currents is 41.3 amperes.
If a 6.6KV Motor run at 415V then what happen to its current and RPM?
Current shall increase while you apply 415V for operating it and will decrease the rpm to a much low level.
half of the current flowing thru resistor 1....
V=IR.
As the lamps are identical, and all three draw a current of 6 A, then each lamp must be drawing 2 A. So, with one of the lamps disconnected, the current drawn from the supply will reduce to 4 A.
Can you use 20 kva transformer in a home?
Yes you could use a 20 kva transformer in a home. Stymied as to why it would be done though. You would need at least a 100 amp service to the home to energize the transformer. Primary side of the transformer would draw 83 amps at 240 volts.
If the question was to supply the home, again yes. It would be 100 amp service equipment that the transformer would feed into.
Why you need calibration for earth fault relays?
Electromechanical relays (not just earth fault relays) need to be calibrated to insure they are operating in the expected way. A simple overcurrent ground relay will have a tap setting, and a time dial setting. These are chosen by a protection engineer to coordinate with other ground protection devices upstream and downstream. If the relay is not calibrated correctly, the relay will not operate at the expected tap value, or may operate slower / faster due to the time dial calibration being different than expected. This can cause over tripping, removing more equipment from the power system than is necessary to clear a fault.
What are the 4 possible causes when the motor frame heats up?
1. Over load,2 Single pahse situation, 3. misalgnment, 4. Wornout bearing
What voltage is the US Xbox 360 slim power supply Is it 100-127 volt like the previous 360s?
Ya....I just got one..
What happens if transformer wattage is much less than load wattage?
If the load current is too high, the power lost in the transformer windings will be too high and it will overheat.
If the voltage is excessive, the power lost in eddy currents in the magnetic core will be too high and it will overheat.
How light is on continuously in AC current at 50HZ?
In the case of an incandescent lamp, the variation in current due to its frequency maintains its temperature, so its light output is continuous. For lamps such as fluorescent tubes, the resulting flicker is not noticeable due to a human's persistence of vision -i.e. the same characteristic that allows us to watch film (a series of still images above around 16 frames per second).
What is the ampere rating of a computer?
Computers are dynamic components there fore if just plain sitting there the power is minimum if really crunching data or working the power will surely increase greatly. Computer are never rated in amperes but Rather watts dissipation
When you have a larger outdoor unit than your indoor unit, several things come into play. Some units are ARI rated as in the capacity loss, efficiency loss, ect. It is not a good idea. Also, evry time you put a new outdoor condenser into a system, it has a full oil charge. When you add the oil alraeady there, you have too much. I do not know if you were meaning a new unit or one that still works just to get by. With the cost of operation, you are always better to replace the system new with matching components.
Mutual inductance is the basic theory of the coupled circuits.
How many coils does a autotransformer have?
only single coil is use as a primary and secondary coil in a auto transformer.
