Are dc motors more common than ac motors?
Difficult to answer. One would need to know what type of motor was in every single motorized object. Wild guess? DC. Could be wrong...
If you include electronically commutated DC motors and stepper motors, in the home or office usually yes, as HDDs have one, most optical drives two to three, each PC type fan is one. A floppy drive has two motors. VCRs usually have 3 or more motors (I remember when VCRs boasted about how many motors they had). Kitchen appliances usually have AC motors. Mixers and blenders usually have universal type motors. HVAC usually uses AC motors, but modern A/C compressors and circulation fans could be computer controlled DC PM or electronically commutated motors. Hand held coded power tools are usually universal, fixed tools are usually AC motors. Cordless tools usually use PM DC motors. Toys use PM DC motors usually.
extremely a DC motor made up of superconductors is conceivable. it is authentic the motor itself would not be superconducting whilst doing artwork, regardless of the undeniable fact that it may be a hundred% efficient as a results of fact that there is not any resistive loss. As many DC motor designs do, it may generate a returned EMF whilst rotating. the capability source could could desire to beat this EMF whilst offering cutting-edge. (for this reason there could be no unfastened lunch.) this sort of motor is defined interior the reference. EDIT: I could desire to disagree with a assertion interior the respond following this one. A DC motor isn't purely an AC motor with a commutator; it has a DC stator field. AC automobiles have a rotating stator field.
Yes, I'll agree with Space... It's difficult to say. DC motors are more common in small gizmos such as computers - the cooling fans for processor chips are DC, motors in cars are DC - that's a whole lot of motors. Anything that needs a good amount of power is AC (in general). An electric can opener is AC, well pumps are AC, all the motors in heating and ventilation systems are AC. That's also a whole lot of motors. It's probably as close as the last US presidential election.
