Cooling fan control in 3D Printing - Interactive Code Practice

Practice - 5 Tasks

1fill in blank

easy

Complete the code to turn the cooling fan ON when the temperature exceeds 50°C.

3D Printing

if temperature [1] 50:
    fan_state = 'ON'

Drag options to blanks, or click blank then click option'

A>

B<

C==

D<=

Attempts:

3 left

💡 Hint

Common Mistakes

Using '<' instead of '>' causes the fan to turn ON at low temperatures.

Using '==' only turns the fan ON at exactly 50°C.

The cooling fan should turn ON when the temperature is greater than 50°C, so the correct operator is >.

2fill in blank

medium

Complete the code to set the fan speed to 100% when the temperature is above 60°C.

3D Printing

fan_speed = 100 if temperature [1] 60 else 0

Drag options to blanks, or click blank then click option'

A<

B>

C==

D<=

Attempts:

3 left

💡 Hint

Common Mistakes

Using '<=' sets fan speed to 100% at low temperatures.

Using '==' only sets fan speed at exactly 60°C.

The fan speed should be 100% when temperature is greater than 60°C, so the operator > is correct.

3fill in blank

hard

Fix the error in the code to correctly turn the fan OFF when temperature is below 40°C.

3D Printing

if temperature [1] 40:
    fan_state = 'OFF'

Drag options to blanks, or click blank then click option'

A<

B>

C>=

D==

Attempts:

3 left

💡 Hint

Common Mistakes

Using '>' turns fan OFF at high temperatures.

Using '>=' or '==' does not cover all temperatures below 40°C.

The fan should turn OFF when temperature is less than 40°C, so the operator < is correct.

4fill in blank

hard

Fill both blanks to create a dictionary comprehension that sets fan speed to 100 if temperature is above 55, else 0.

3D Printing

fan_speeds = {room: 100 if temp [1] 55 else [2] for room, temp in temps.items()}

Drag options to blanks, or click blank then click option'

A>

B0

C50

D<

Attempts:

3 left

💡 Hint

Common Mistakes

Using '<' instead of '>' reverses the logic.

Setting else value to 50 instead of 0 causes incorrect fan speed.

The fan speed is 100 if temperature is greater than 55, else 0. So the first blank is > and the second blank is 0.

5fill in blank

hard

Fill all three blanks to create a dictionary comprehension that sets fan speed to 100 if temperature is above 60, else 50 if above 40, else 0.

3D Printing

fan_speeds = {room: 100 if temp [1] 60 else 50 if temp [2] 40 else [3] for room, temp in temps.items()}

Drag options to blanks, or click blank then click option'

A>

C0

D<

Attempts:

3 left

💡 Hint

Common Mistakes

Using '<' instead of '>' reverses conditions.

Setting else value to 50 instead of 0 causes wrong fan speed.

The first condition checks if temp > 60, the second if temp > 40, else 0. So blanks are >, >, and 0.