Quiz about Magnetic devices: Motors, generators and transformers

Question 1

What is the function of the motor?

Accepted Answer

Convert electrical energy to mechanical (kinetic) energy

Answer

Convert electrical energy to thermal energy (heat)

Answer

Convert mechanical (kinetic) energy to electrical energy

Question 2

What is the function of the generator?

Accepted Answer

Convert mechanical (kinetic) energy to electrical energy

Answer

Convert electrical energy to mechanical (kinetic) energy

Answer

Convert electrical energy to thermal energy (heat)

Question 3

What is the function of the transformer?

Accepted Answer

Step up or step down the voltage

Answer

Convert electrical energy to mechanical (kinetic) energy

Answer

Convert electrical energy to thermal energy (heat)

Answer

Convert mechanical (kinetic) energy to electrical energy

Question 4

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

Accepted Answer

solar panels

Answer

nuclear

Answer

coal

Answer

windmill

Question 5

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

Accepted Answer

AC Alternating current

Answer

DC Direct current

Question 6

What type of transformer is a location B?

Accepted Answer

step up

Answer

step down

Question 7

What type of transformer is a location D?

Accepted Answer

step down

Answer

step up

Question 8

What type of transformer is A?

Accepted Answer

Step up

Answer

Step down

Question 9

What type of transformer is D?

Accepted Answer

Step up

Answer

Step down

Question 10

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

Accepted Answer

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

Accepted Answer

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

Answer

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

Answer

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

Magnetic devices: Motors, generators and transformers