A constant speed motor is a type of motor that maintains a consistent speed of rotation under varying load conditions. These motors are often used in applications where precise control of speed is required, such as in industrial machinery or appliances. Unlike variable speed motors, constant speed motors do not change their speed based on the operating conditions.
It is a 2 speed automatic transmission that General Motors used from 1950-1973.
dc series motors are used because of torque vs speed characteristics.
A brushless ESC, also known as an Electronic Speed Control, is an electronic circuit which is used to vary the speed of an Electric Motor. It Is most often used for brushless motors.
Universal motors are commonly used in household appliances such as vacuum cleaners, blenders, and power tools due to their ability to operate on both AC and DC power sources. They are also used in hand-held mixers, hair dryers, and sewing machines for their high speed and power capabilities. Additionally, universal motors are frequently used in appliances that require variable speed control.
Open ended induction motor - i assume you are talking about split phase induction motor. With these motors old style speed controlling method using external resistors can be used. However this is now obsolete.
Electric motors are used in many rc cars, planes, helicopters and boats. In hobby modeling they are used as a key component to bring your creations to life. The torque and quality of the motors used in hobby remote controlling varies in price drastically. Depending on your budget and your project there is a hobby motor that will meet your requirements.
Basically anything that works with batteries usually works with DC motors, i.g. your hard drive, your cellphone vibrator, toys, etc. Also, even for large motors, the DC motor has the advantage of being easily controlled by input voltage. Induction motors, on the other hand, can use controlled input voltage but they will have to deal wth low torque when the voltage is low. DC motors are used for those little fans in your computer. Also, CD players also use DC motors to spin the discs. DC motors are important where absolute speed control and feedback are necessary. For your household appliances, including fan motors, those are AC motors, cheaper for the industrial strength and more efficient.
Number of poles and supply freqency determines speed of synchronous motor. For speed control of such motors Variable Freqency Drives(VFD) are used.
Series motors have poor speed regulation because a reduced load causes the speed to rise, which causes the current to drop, which causes the speed to rise more because there is less field. Series motors are usually used to drive massive loads such as trams, where their high starting torque is a big advantage, and the speed cannot go out of control.
PMSM motors are used in hybrid cars
Electromagnets are used for a wide variety of uses like in motors to regulate the speed of motor and used in cranes to lift heavy metal objects and they can used in electronic devices