Comprendere il Motore Elettrico

Comprendere il Motore Elettrico

9th Grade

13 Qs

quiz-placeholder

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Comprendere il Motore Elettrico

Comprendere il Motore Elettrico

Assessment

Quiz

English

9th Grade

Hard

Created by

Tatiana Perini

Used 2+ times

FREE Resource

13 questions

Show all answers

1.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

What is the basic principle behind the operation of an electric motor?

Conversion of thermal energy into mechanical energy

Interaction between a magnetic field and electric current

Transformation of chemical energy into light energy

Friction between mechanical components

2.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

What are the main components of a simple electric motor?

Battery, resistor, capacitor

Rotor, stator, commutator, brushes

Pistons, cylinders, crankshaft

Transformer, diode, inductor

3.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

What does the commutator do in a direct current motor?

Increases the voltage of the circuit

Reverses the direction of the current in the rotor

Reduces the resistance of the circuit

Cools the motor while it operates

4.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

What happens when the direction of the current in the motor is reversed?

The motor stops immediately

The motor continues to rotate in the same direction

The motor changes direction of rotation

The motor increases speed

5.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

What is the function of the brushes in an electric motor?

Clean the internal components of the motor

Lubricate the moving parts

Maintain electrical contact between the external circuit and the rotor

Cool the motor during operation

6.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

Why does the rotor keep spinning in an electric motor?

Due to the inertia of the system

Thanks to the continuous action of the magnetic field

Thanks to the periodic reversal of the current by the commutator

Due to gravity

7.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

What is the main difference between an electric motor and a generator?

A motor produces electricity, a generator produces mechanical energy

A motor converts electrical energy into mechanical energy, a generator does the opposite

A motor uses fossil fuels, a generator does not

There is no significant difference

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