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