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Magnetic devices: Motors, generators and transformers

Total questions: 10

Worksheet time: 5mins

Name
Class
Date
1.

What is the function of the motor?

a)

Convert electrical energy to mechanical (kinetic) energy

b)

Convert electrical energy to thermal energy (heat)

c)

Convert mechanical (kinetic) energy to electrical energy

2.

What is the function of the generator?

a)

Convert electrical energy to mechanical (kinetic) energy

b)

Convert electrical energy to thermal energy (heat)

c)

Convert mechanical (kinetic) energy to electrical energy

3.

What is the function of the transformer?

a)

Convert electrical energy to mechanical (kinetic) energy

b)

Convert electrical energy to thermal energy (heat)

c)

Convert mechanical (kinetic) energy to electrical energy

d)

Step up or step down the voltage

4.

Which of the following energy sources do NOT rely on a turbine which allows a generator to create electricity?

a)

nuclear

b)

coal

c)

windmill

d)

solar panels

5.

Which type of electric current is required for a transformer to function?

a)

AC Alternating current

b)

DC Direct current

6.

What type of transformer is a location B?

a)

step up

b)

step down

7.

What type of transformer is a location D?

a)

step up

b)

step down

8.

What type of transformer is A?

a)

Step up

b)

Step down

9.

What type of transformer is D?

a)

Step up

b)

Step down

10.

Why do we need transformers on the electrical grid? (Two of these options are correct)

a)

To step up the voltage and lower the current which reduces heat loss over long distances

b)

To step down the voltage and increase the current which reduces heat loss over long distances

c)

To step down the voltage and increase the current which makes the electrical power safer for use in the community

d)

To step up the voltage and decrease the current which makes the electrical power safer for use in the community