Microwaves - Design and Construction

Question 1

List the main parts of a microwave.

12

Answer 1

Door

Oven Cabinet

Flex and three-pin plug

On/off switch

Interior light

Transformer

Magnetron

Wave guide

Wave stirrer

Turntable

Timer

Power level button

Question 2

Describe the door of a microwave.

3

Answer 2

It is a door with a glass window which allows food to be viewed during cooking, and a perforated metal backing redirects the microwaves back into the oven

The door has a safety seal to prevent the loss of microwaves during cooking

If the door is opened during the cooking time the power automatically turns off

Question 3

Why is there a glass window in the door of a microwave?

Answer 3

To allow the food to be viewed during cooking

Question 4

What allows the food to be viewed during cooking?

Answer 4

A glass window

Question 5

What part of the door redirects the microwaves back into the oven?

Answer 5

The perforated metal backing redirects the microwaves back into the oven

Question 6

What does the perforated metal backing do?

Answer 6

It redirects the microwaves back into the oven

Question 7

What prevents the loss of microwaves during cooking?

Answer 7

The door has a safety seal

Question 8

What is the function of the door’s safety seal?

Answer 8

It prevent the loss of microwaves during cooking

Question 9

What happens if the door is opened during the cooking time?

Answer 9

The power will automatically turn off

Question 10

Describe the oven cabinet.

Answer 10

An oven cabinet with an enamelled exterior, constructed from steel and lined with metal

Vents are located on the top and back of the cabinet to release steam during cooking

Question 11

What is the exterior of the oven cabinet made of?

Answer 11

The oven cabinet has an enamelled exterior

Question 12

What is the oven cabinet constructed from?

Answer 12

Steel

Question 13

What is the oven cabinet lined with?

Answer 13

Metal

Question 14

What are located on the top and back of the oven cabinet?

Answer 14

Vents

Question 15

Where are the vents located on the oven cabinet?

Answer 15

The top and back

Question 16

What is the function of the vents on the oven cabinet?

Answer 16

They release steam during cooking

Question 17

What part of the microwave release steam during cooking?

Answer 17

The vents

Question 18

Describe the flex and three-pin plug.

Answer 18

It connects to the electricity supply

Question 19

Describe the on/off switch.

Answer 19

It controls the electricity supply

Question 20

Describe the interior light.

Answer 20

It switches on when the microwave oven is on

Question 21

Describe the transformer

Answer 21

It increases normal domestic voltage from 230 V to a much higher frequency needed to produce microwave (electromagnetic) energy

Question 22

Describe the wave guide.

Answer 22

It guides the microwave (electromagnetic) energy from the magnetron into the oven cabinet

Question 23

Describe the wave stirrer.

Answer 23

It rotates during cooking or reheating to ensure even distribution of microwaves throughout the oven cabinet

Question 24

Describe the turntable

Answer 24

A turntable made from heat-resistant glass rotates to ensure even cooking of the food

Question 25

Describe the timer

Answer 25

A timer sets the desired duration of cooking time in minutes or seconds

Question 26

Describe the power level button

Answer 26

A power level button changes the wattage e.g. low (90 W) for defrosting