2024M03W07 - Reading 1: Electric Motor

What is the best title for the passage?

• How electric motor works
• How washing machine works
• How motor works
• How magnets repel each other

How does electromagnet created according to the passage?

• By running a current through a loop of wire with iron inside it.
• By running a current through a wire.
• By striking an iron and adding carbon to it.
• By creating north pole in one end and south pole in another end.

What is an armature?

• A piece of iron surrounded by wire.
• A magnet surrounding a motor.
• Small carbon blocks inside electric motor.
• A place where current and magnet interchange.

What makes the armature turn?

• The attraction and repulsion between the poles of armature and field magnet.
• The current inside the loop wire.
• The reversing of the current through the wire.
• The magnetization of iron inside the motor.

How did the current keep being reversed in electric motor?

• By connecting the armature to a commutator, in which the current flows.
• By changing the source of the current.
• By using alternating current.
• By moving the field magnet closer to the commutator.

The word "it" in line 5 (the first one) refers to _____.

• a loop of wire
• iron
• electric current
• electromagnet

The word "universal" in line 3 has similar meaning with _____.

• versatile
• particular
• restricted
• skillful

The word "stationary" in line 11 can best be replaced by _____.

• still
• inert
• movable
• enduring

The word "close" in line 8 is closest in meaning to _____.

• near
• restrict
• private
• block