Dc is an electrical term for direct current. Ac stands for alternating current. As you probably guessed a dc moter uses dc current and an ac moter uses ac current.
P.S. Most home outlets use ac current.
let me tell you what does each word means:
Motor: is a device which converts electrical energy(Voltage/Current) into mechanical energy (eg: rotating shaft)
Generator: is a device which converts mechanical energy (eg: rotating shaft) into electrical energy(Voltage/Current).
DC: electricity in which voltage has constant polarity and current flows in same direction.
AC: electricity in which voltage switches polarity (+ve to -ve & vice versa) and current flows backforth (Changes direction periodically)
An AC generator can act as an AC motor (ie what is called "motoring", and is undesireable in the power industry).
The most obvious difference between what you're asking is their purpose as the prevous answerer points out. Second is one uses AC vs. DC., which effects the physical makeup of the device. There are many more, but I will stop with three - a DC motor's speed is variable / not constant, while AC generators are typically spun at "synchronous" speed, and kept there.
Ac motors switch fields every 1/60th of a sec. Also use alternating current to operate the windings
The type of currency they need to run.
Only Stator winding is similar in both the cases.
ac machines can run only in one direction but dc machines can run in both the directions depending upon the direction of current flow into it. If we change polarity of input supply we can reverse the direction of motion of dc machineCommentThe above answer isn't altogether true, as it's very easy to change the direction of an AC machine. For example, to change the direction of rotation of a three-phase induction motor, the motor controller interchanges two of the three line conductors.The main difference used to be that the speed of DC machines is easier to control, but that is a thing of the past thanks to developments in electronic motor controllers.
AC series motor uses the electric current to run the motor. Whereas DC motor uses the battery power to run it.AnswerAn a.c. series motor is termed a 'universal motor', because it will run on either a.c. or d.c. A.C. series motors are constructed in essentially the same way.
How do you calculate 3ph AC motor power?
Yes, what matters is that the cable can take the correct voltage, and is thick enough to carry the required current, but ac or dc makes no difference.
http://en.wikipedia.org/wiki/Electric_motor
induction motor is AC motor also synchronic motors are AC motors but second one has not slip but first one has slip . shut motor is DC motor
AC stands for alternating current, and DC is direct current. A motor is a device that uses electrical energy to spin. An AC motor uses AC voltage, and a DC motor uses DC voltage. http://ezinearticles.com/?The-Difference-Between-AC-and-DC-Electric-Motors&id=193767
AC power is made by alternating current and DC does not change.
There is no difference between AC AND DC chockes
Here are the main differences between an electric motor and an electric generator: Functionality: Electric motors convert electrical energy into mechanical or kinetic energy, whereas electric generators convert mechanical energy into electrical energy. Usage: Electric motors are used in fans, mixers, washing machines, and other household appliances, whereas electric generators are used as power backup during outages, in construction sites, mining areas, and agriculture. Fleming’s Rule: Electric motors follow Fleming’s left-hand rule, whereas electric generators follow Fleming’s right-hand rule. Principle: The working principle of a motor is based on the current-carrying conductor, whereas the working principle of a generator is based on electromagnetic induction. Current: In motors, the current has to be supplied to armature windings, whereas in generators, armature windings produce current. EMF: Electric motors give out back EMF, whereas electric generators produce induced EMF.
DC Motor works on DC source and AC motor works on AC source
Only Stator winding is similar in both the cases.
The main advantage of ac- it required less maintainance The main disadvantage of ac-it can not be stored the main advantage of dc -it required less amount of conductors to transmit and easily stored The main disadvantage of dc-it is more dangerous than ac at high voltage
The big difference is that the synchronous motor's rotor can have a variable current applied to it through its field slip rings. Both types of motors have their own advantages. With a synchronous motor in the system, the systems power factor can be regulated.
The only difference between slip rings and commutator is that commutator can change the frequency where as the slip rings can not do it.
ac machines can run only in one direction but dc machines can run in both the directions depending upon the direction of current flow into it. If we change polarity of input supply we can reverse the direction of motion of dc machineCommentThe above answer isn't altogether true, as it's very easy to change the direction of an AC machine. For example, to change the direction of rotation of a three-phase induction motor, the motor controller interchanges two of the three line conductors.The main difference used to be that the speed of DC machines is easier to control, but that is a thing of the past thanks to developments in electronic motor controllers.