Electric Motor Quiz

In an electric motor, an electric current and magnetic field produce a _______ movement.

• linear

• turning

• oscillating

• rotational

The motor used in washing machines is known as a _______ motor.

• synchronous

• universal

• stepper

• induction

A universal motor can run on _______ current or alternating current.

• high-frequency

• direct

• low-voltage

• reactive

An electric current running through a wire produces a _______ around the wire.

• force

• voltage

• magnetic field

• resistance

When an electric current flows around a loop of wire with a bar of iron, the iron becomes a(n) _______.

• conductor

• transformer

• electromagnet

• insulator

Like poles of magnets _______ each other.

• attract

• neutralize

• repel

• align

A simple electric motor consists of an armature placed between the north and south poles of a _______ magnet.

• permanent

• electromagnet

• temporary

• variable

The component of a motor that becomes magnetized when electricity flows around it is called the _______.

• rotor

• armature

• stator

• commutator

The attraction and repulsion between the armature magnet and the field magnet make the armature _______.

• vibrate

• oscillate

• turn

• stop

To keep the armature turning, the direction of the current must be _______.

• constant

• reversed

• increased

• decreased