Q:What is the size of DC motor and AC motor under the same power?

The first is to determine the output power or the rated power consumption..The DC motor has low working voltage and large power consumption under the same power consumption.The AC motor has a high working voltage and a small volume under the same power consumption.If the same work force and torque are required, the DC motor is of small size.

Q:Here is a hair dryer i was going to buy from argos but it says it has an AC motor which most of the others don't have, is this a good thing to get?http://www.argos .uk/static/Product/partNumber/4429890/c_1/1%7Ccategory_root%7CHealth+and+personal+care%7C10199659/c_2/2%7Ccat_10199659%7CHair+care%7C10199687/c_3/3%7Ccat_10199687%7CHair+dryers%7C10199692.htm

AC is alternating current, this means it runs on the power from your wall outlet.They all use ac motors, it's just such a standard thing most people wouldn't even mention it. It's like saying your car runs on a gas motor. True, but most of them do.

Q:is commutator present in ac motor?

I guess the answer is sometimes. I forgot about the universal motor the answer is right there induction motors, the largest group of ac motors do not need commutators. depending on whether they have wound or squirrel cage rotors, they may not even need slip rings.

Q:Is permanent magnet synchronous motor AC servo motor?

The permanent magnet synchronous motor is not the coil or induction material on the rotor, but the permanent magnet. Special servo drives are used to control such motors

Q:I've heard that hair dryers with AC motors are better then dryers with DC motors. Why? Is it just because they last longer?

Probably for the same reason we do not use electric cars with fuel cells. There are a ton of good old DC motors hauling out there. The simplicity of the system makes them work and easy to diagonose and fix. The biggest draw(funny huh) back to DC is the damage that is done to the switching gear turning them on and off due to the arc that is pulled on DC comared to AC. The other trick is that generators by default create AC, which is then turned into DC, which has some loss in the process.

Q:It is possible AC motor run on DC supply.What can i do to run a AC motor on DC Supply

Unless it is a universal motor, NO. Generally, you would need an inverter.

Q:Have 2 separate but identical furnaces, one Tappan, one Frigidaire. The Tappan blower motor runs constant in cool setting. Blower AND flue fan run constant in heat or off setting, or when thermostat is completely removed. Circuit board flashes once signaling open limit switch or external load on quot;Wquot; (? No external load that I know of) Have replaced blower, flue, and rollout limit switches to no effect. Frigidaire model blower won't shut off. Circuit board doesn't flash a trouble signal. New thermostats and cleaned filters and ducts on both. Have tried to talk to anyone at Frigidaire/Electrolux/Tappan, but apparently no human beings are employed there

Frigidaire Furnaces

Q:I have to do research for an engineering project and i can't even figure out what it ishelp!

A motor that runs on alternating current as opposed to direct current. There are several types, also things like drills tend to have universal motors that will run on either.

Q:Hello everyone,I need help wiring up a pump motor that I just got to replace an old one. It is an Ironhorse Rolled Steel general purpose motor rated at 1 HP. It is dual voltage (115/230) but will be running it at 115V. It uses a T1-T8 system the colors are:Blue T1White T2Orange T3Yellow T4Black T5Red T8The wiring scheme for low voltage is:Line 1: Blue orange redLine 2: White Yellow blackHow do I hook this up to an AC power chord that has White, Black, Green wires?

you take the blue,orange,red wire and twist them together [after you strip some insulation off, ] they go to the black wire on the power cord, the white yellow, black wires go to the white wire on the power cord green goes to the motor housing,

Q:Hey I understand the basic concepts of a dc motor/ alternator and want to know how many turns and such can anyone help I am going to try to make it charge some batteries by wind

An alternator is not a DC motor - it is wound to produce alternating current (thus the name) which is rectified by diodes on the case to make DC. Winding a DC motor/generator is not a simple task requiring multiple segments and a commutator to collect the segments in detail. You would be much better off just buying one, perhaps used, than spending your time trying to build something with reliable bearings and speed.