Del Unit 31
The motor that does not contain a wound armature, commutator, or brushes is the _____ motor.
Brushless DC
The speed regulation of a DC motor is proportional to the _____.
Armature resistance
A device that converts electrical energy into mechanical energy is called a(n) _____.
Motor
Small permanent magnet motors that have lightweight rotors are often used as _____.
servomotors
Permanent magnet motors have _____ efficiency than conventional field-wound motors.
Higher
A compound motor has _____ field windings.
Series and Shunt
The DC motor, known as a "constant speed motor," is the _____ motor.
Shunt
When the field winding of a DC motor is connected in parallel with the armature, the motor is called a _____ motor.
Shunt
When a motor is connected differential compound, the _____ determines the direction of rotation of the motor at no load or light load.
Shunt Field