Q:Why is it better to use a DC motor rather than a AC motor?

Wouldn't that depend on your application, power demand, power availability, etc? If you're running a toy remote controlled car, you'd get better efficiency with a DC motor, but if you're turning a ceiling fan, the heat loss in converting AC line power to DC to run the motor would kill your efficiency and an AC motor would be better.

Q:Soybean milk machine AC motor or DC motor is good?

With a special fragrance, and slightly stimulated; slightly sweet, and accompanied by stimulating spicy taste. Flammable gas whose vapors can form explosive mixtures with air and can be miscible with water at any rate.

Q:Hey, i was wondering if a fan motor by modifying it could be converted into a generator. do you think its possible and if so how? useful links will also be appreciated

In principle, and generally speaking, motors are generators run in reverse and vice versa. A motor takes energy and creates rotary motion. A generator takes rotary motion and creates energy/electricity. However, the wisdom of using a fan motor as an AC generator is tempered by the question of efficiency. An efficient fan uses very little electricity to create a lot of rotary motion. That means if you were to use it as a generator, you'd have to expend a lot of rotary motion to create comparatively little electricity. Now it's not that you'd be better off using an inefficient fan motor -- instead you should consider that an efficient AC generator uses very little rotary motion to create a lot of electricity. Seek an efficient AC generator first -- you'll be better off in the long run.

Q:I work with electricity frequently enough and I have a motor that I want to use as a generator/alternator. Its a universal motor so it can be run on AC or DC. Currently I can't find my multimeter and I am having problems finding a answer through searching. So I need to know, when I spin a universal motor am I creating alternating current that I will need to add a rectifier to so I can run a DC component...or am I creating DC? I ask because I have a motorized bike and I just found a sprocket drive motor and I want to use it as a dynamo for lighting, and I want to rig it to DC battery storage as well. Or if you have ideas for circuitry on my specific project that would be even better!

Hi A universal motor is most often a series connected DC motor. therefore it will generate DC voltage. You might attempt to rewire it as a shunt generator which will give you a more consistant output voltage. Series generators have highly variable output voltage depending on load. It would be difficult to get it to work against the battery voltage so it will begin generating. You will have to install one diode between the generator and the battery otherwise the battery will discharge through the generator when your bike is stationary. Good luck.

Q:I want to be able to slowly raise and lower a weight vertically against gravity. The raising part is easy, but I cant get my mind around the lowering part. I need the weight to be lowered slowly (constant speed, no need to control velocity) and I also need to be able to stop at certain points along the way. I am thinking electric brake, but I am afraid that that is a more of an all on or all off thing and will help me stop but wont help me lower the weight.

The best method is to use an AC motor that is fitted with an encoder and a variable speed drive that can operate as a vescor drive. This combination will give you precise contol up and down and you will be able to stop at predetermined points....just like a lift or elevator control. Contact Control Techniques plc or Seimens or SSD Parker or Hitachi or any self respecting drives company...they will help you Good luck

Q:I am doing a paper on Nikola Tesla and i know he invented this and i know it is important, but why?

AC motors are used for anything and everything. Way too much to list. Electrical generators are basically syncronous motors that output electricity by motion, instead of creating motion from electrical current. So ask yourself how life would be today without electrical power.

Q:Can i convert it to batterry if i can't find a motor and what size battery operated motor should i buy

go on craigs list. and maybe you should look in the yellow pages for a clock repaire

Q:I need this for my lab report.

Induction AC Motors are referred to as asynchronous motors or rotating transformers. This type of AC Motor uses electromagnetic induction to power the rotating device which is usually the shaft. The rotor in Induction AC Motor products typically turns slower than the frequency that is supplied to it. Induced current is what causes the magnetic field that envelops the rotor of these motors. This Induction AC Motor is designed in one or three phases.

Q:Just replaced the outside condenser units fan motor and it turns the opposite direction than the old one. Wires are correct. Switched the leads on the running capacitor and it didn't help. Any suggestions??

Reverse the start windings on the motor. #5 #8.

Q:i want a fairy simple one that doesn't take too long time or not too complecated, thanks.

If you have a strobe light you can confirm that it is turning at just under 60 cycles/s because the AC is 60 cycles/s You can take off the fan blade and confirm that it is now turning even closer to 60 Hz because of a lack of load. You can increase the load by blowing air at the fan with another fan and watch it turn slower. If you can destroy the fan (there are many being thrown away each day) you can cut off the copper shading coils that help it start up. You can measure the current in all the above situations and observe that the closer to 60Hz it turns the less current there is.